diff --git a/web/src/lib/executor/executor.test.ts b/web/src/lib/executor/executor.test.ts
index 91bc986..8b7f4db 100644
--- a/web/src/lib/executor/executor.test.ts
+++ b/web/src/lib/executor/executor.test.ts
@@ -66,6 +66,7 @@ function makeTool(
 ): ToolEntry {
 	return {
 		id: "test-tool",
+		slug: "test-tool",
 		title: "Test tool",
 		description: "Test tool",
 		category: "analyze",
diff --git a/web/src/lib/registry/alpha.ts b/web/src/lib/registry/alpha.ts
index dc142d9..9c1ed4c 100644
--- a/web/src/lib/registry/alpha.ts
+++ b/web/src/lib/registry/alpha.ts
@@ -46,6 +46,7 @@ export const addStrokeSchema = toolSchema<AddStrokeParams>({
 
 const addStroke: ToolEntry<AddStrokeParams> = {
 	id: "add-stroke-png",
+	slug: "add-stroke-png",
 	title: "Outline PNG",
 	description:
 		"Adds a colored ring outline around the opaque content with the chosen thickness.",
@@ -73,6 +74,7 @@ export const findContourSchema = toolSchema<FindContourParams>({
 
 const findContour: ToolEntry<FindContourParams> = {
 	id: "find-contour-png",
+	slug: "find-contour-png",
 	title: "Find contour PNG",
 	description:
 		"Leaves only a line along the boundary of opaque regions in the chosen color and thickness.",
@@ -100,6 +102,7 @@ export const removeColorSchema = toolSchema<RemoveColorParams>({
 
 const removeColor: ToolEntry<RemoveColorParams> = {
 	id: "remove-color-from-png",
+	slug: "remove-color-from-png",
 	title: "Remove color from PNG (make transparent)",
 	description:
 		"Makes all pixels close to the chosen color transparent. The tolerance sets the allowed deviation as a percentage of the maximum color distance.",
@@ -143,6 +146,7 @@ const circleMaskSchema = toolSchema<CircleMaskParams>(
 
 const circleMask: ToolEntry<CircleMaskParams> = {
 	id: "circle-mask-png",
+	slug: "circle-mask-png",
 	title: "Circle Mask PNG",
 	description:
 		"Cuts the image into a circle. Diameter is set as a share of the smaller side.",
@@ -205,6 +209,7 @@ const squareMaskSchema = toolSchema<SquareMaskParams>(
 
 const squareMask: ToolEntry<SquareMaskParams> = {
 	id: "square-mask-png",
+	slug: "square-mask-png",
 	title: "Square Mask PNG",
 	description:
 		"Cuts the image into a rectangle with sides as a share of the smaller side.",
@@ -283,6 +288,7 @@ const starMaskSchema = toolSchema<StarMaskParams>(
 
 const starMask: ToolEntry<StarMaskParams> = {
 	id: "star-mask-png",
+	slug: "star-mask-png",
 	title: "Star Mask PNG",
 	description:
 		"Cuts the image into an n-pointed star with adjustable inner radius and rotation.",
@@ -361,6 +367,7 @@ const wavyMaskSchema = toolSchema<WavyMaskParams>(
 
 const wavyMask: ToolEntry<WavyMaskParams> = {
 	id: "wavy-mask-png",
+	slug: "wavy-mask-png",
 	title: "Wavy Mask PNG",
 	description:
 		"Cuts the image into a wavy-edged circle: radius is modulated by a sine with chosen amplitude and frequency.",
@@ -383,6 +390,7 @@ export const removeAlphaChannelSchema = toolSchema<EmptyParams>({});
 
 const removeAlphaChannel: ToolEntry<EmptyParams> = {
 	id: "remove-alpha-channel-png",
+	slug: "remove-alpha-channel-png",
 	title: "Remove alpha channel PNG",
 	description:
 		"Composites the image over a white background and saves without transparency.",
@@ -408,6 +416,7 @@ export const setAlphaChannelSchema = toolSchema<SetAlphaChannelParams>({
 
 const setAlphaChannelTool: ToolEntry<SetAlphaChannelParams> = {
 	id: "set-alpha-channel-png",
+	slug: "set-alpha-channel-png",
 	title: "Set alpha channel PNG",
 	description: "Assigns the same opacity to all pixels; colors stay unchanged.",
 	category: "alpha",
@@ -420,6 +429,7 @@ export const extractAlphaMaskSchema = toolSchema<EmptyParams>({});
 
 const extractAlphaMaskTool: ToolEntry<EmptyParams> = {
 	id: "extract-alpha-mask-png",
+	slug: "extract-alpha-mask-png",
 	title: "Extract alpha mask PNG",
 	description: "Turns transparency into a black-and-white opaque mask.",
 	category: "alpha",
@@ -444,6 +454,7 @@ export const roundCornersSchema = toolSchema<RoundCornersParams>({
 
 const roundCornersTool: ToolEntry<RoundCornersParams> = {
 	id: "round-corners-png",
+	slug: "round-corners-png",
 	title: "Round corners PNG",
 	description:
 		"Clips corners by a radius set as a percentage of half the smaller side.",
@@ -457,6 +468,7 @@ export const invertAlphaSchema = toolSchema<EmptyParams>({});
 
 const invertAlphaTool: ToolEntry<EmptyParams> = {
 	id: "invert-alpha-png",
+	slug: "invert-alpha-png",
 	title: "Invert alpha PNG",
 	description: "Opaque areas become transparent and vice versa.",
 	category: "alpha",
@@ -507,6 +519,7 @@ export const removeBackgroundSchema = toolSchema<RemoveBackgroundParams>(
 
 const removeBackgroundTool: ToolEntry<RemoveBackgroundParams> = {
 	id: "remove-background-png",
+	slug: "remove-background-png",
 	title: "Remove background PNG (smart)",
 	description:
 		"Removes a solid background: by color with tolerance, outer regions from the edges only, or every matching pixel. Can smooth the boundary.",
@@ -539,6 +552,7 @@ export const makeThickerSchema = toolSchema<MakeThickerParams>({
 
 const makeThickerTool: ToolEntry<MakeThickerParams> = {
 	id: "make-thicker-png",
+	slug: "make-thicker-png",
 	title: "Thicken PNG",
 	description: "Expands opaque areas by the given number of pixels.",
 	category: "alpha",
@@ -563,6 +577,7 @@ export const makeThinnerSchema = toolSchema<MakeThinnerParams>({
 
 const makeThinnerTool: ToolEntry<MakeThinnerParams> = {
 	id: "make-thinner-png",
+	slug: "make-thinner-png",
 	title: "Thin PNG",
 	description: "Shrinks opaque areas — thins the strokes of text and details.",
 	category: "alpha",
@@ -587,6 +602,7 @@ export const featherEdgesSchema = toolSchema<FeatherEdgesParams>({
 
 const featherEdgesTool: ToolEntry<FeatherEdgesParams> = {
 	id: "feather-edges-png",
+	slug: "feather-edges-png",
 	title: "Feather Edges PNG",
 	description:
 		"Blurs only the alpha channel: hard cutout edges become soft and gradual, colors stay untouched.",
@@ -612,6 +628,7 @@ export const cleanEdgesSchema = toolSchema<CleanEdgesParams>({
 
 const cleanEdgesTool: ToolEntry<CleanEdgesParams> = {
 	id: "clean-edges-png",
+	slug: "clean-edges-png",
 	title: "Clean Edges PNG (defringe)",
 	description:
 		"Replaces edge-halo colors of semi-transparent pixels with the nearest fully opaque color. Alpha stays as is.",
@@ -637,6 +654,7 @@ export const hardenAlphaSchema = toolSchema<HardenAlphaParams>({
 
 const hardenAlphaTool: ToolEntry<HardenAlphaParams> = {
 	id: "harden-alpha-png",
+	slug: "harden-alpha-png",
 	title: "Harden edges PNG",
 	description:
 		"Binarizes the alpha channel by threshold: semi-transparent pixels become either fully transparent or fully opaque.",
@@ -662,6 +680,7 @@ export const despeckleAlphaSchema = toolSchema<DespeckleAlphaParams>({
 
 const despeckleAlphaTool: ToolEntry<DespeckleAlphaParams> = {
 	id: "despeckle-alpha-png",
+	slug: "despeckle-alpha-png",
 	title: "Despeckle PNG",
 	description:
 		"Opening: removes lone semi-transparent pixels and small specks.",
@@ -687,6 +706,7 @@ export const closeHolesSchema = toolSchema<CloseHolesParams>({
 
 const closeHolesTool: ToolEntry<CloseHolesParams> = {
 	id: "close-holes-png",
+	slug: "close-holes-png",
 	title: "Close holes PNG",
 	description: "Closing: fills lone transparent dots inside the object.",
 	category: "alpha",
diff --git a/web/src/lib/registry/analyze.ts b/web/src/lib/registry/analyze.ts
index 2344cec..1b991b3 100644
--- a/web/src/lib/registry/analyze.ts
+++ b/web/src/lib/registry/analyze.ts
@@ -29,6 +29,7 @@ export const extractColorSchema = toolSchema<ExtractColorParams>({
 
 const extractColor: ToolEntry<ExtractColorParams> = {
 	id: "extract-color-from-png",
+	slug: "extract-color-from-png",
 	title: "Extract Color from PNG",
 	description:
 		"Keeps only pixels close to the chosen color and makes everything else transparent — the inverse of Remove Color.",
@@ -89,6 +90,7 @@ export const showTransparentSchema = toolSchema<MaskParams>({
 
 const showTransparent: ToolEntry<MaskParams> = {
 	id: "show-transparent-png",
+	slug: "show-transparent-png",
 	title: "Show Transparent Areas PNG",
 	description:
 		"Highlights every transparent or semi-transparent pixel with the chosen color so gaps become obvious.",
@@ -115,6 +117,7 @@ export const showGrayscalePixelsSchema = toolSchema<GrayscalePixelsParams>({
 
 const showGrayscalePixels: ToolEntry<GrayscalePixelsParams> = {
 	id: "show-grayscale-pixels-png",
+	slug: "show-grayscale-pixels-png",
 	title: "Show Grayscale Pixels PNG",
 	description:
 		"Finds pixels whose channels are nearly equal and renders them as a mask. Tolerance is in channel units.",
@@ -143,6 +146,7 @@ export const showColorPixelsSchema = toolSchema<ColorPixelsParams>({
 
 const showColorPixels: ToolEntry<ColorPixelsParams> = {
 	id: "show-color-pixels-png",
+	slug: "show-color-pixels-png",
 	title: "Show Color Pixels PNG",
 	description:
 		"Finds colored (non-gray) pixels beyond the channel tolerance and renders them as a mask.",
@@ -171,6 +175,7 @@ export const lightPixelMaskSchema = toolSchema<LightPixelParams>({
 
 const lightPixelMask: ToolEntry<LightPixelParams> = {
 	id: "light-pixel-mask-png",
+	slug: "light-pixel-mask-png",
 	title: "Light Pixel Mask PNG",
 	description: "Selects pixels brighter than the luminance threshold.",
 	category: "analyze",
@@ -198,6 +203,7 @@ export const darkPixelMaskSchema = toolSchema<DarkPixelParams>({
 
 const darkPixelMask: ToolEntry<DarkPixelParams> = {
 	id: "dark-pixel-mask-png",
+	slug: "dark-pixel-mask-png",
 	title: "Dark Pixel Mask PNG",
 	description: "Selects pixels darker than the luminance threshold.",
 	category: "analyze",
@@ -225,6 +231,7 @@ export const uniqueColorMaskSchema = toolSchema<UniqueColorParams>({
 
 const uniqueColorMask: ToolEntry<UniqueColorParams> = {
 	id: "unique-color-mask-png",
+	slug: "unique-color-mask-png",
 	title: "Unique Color Mask PNG",
 	description:
 		"Selects colors that occur no more than the given number of times — rare and one-off pixels.",
@@ -240,6 +247,7 @@ const emptySchema = toolSchema<NoParams>({});
 
 const verifyIsPng: ToolEntry<NoParams> = {
 	id: "verify-is-png",
+	slug: "verify-is-png",
 	title: "Verify If Image Is a PNG",
 	description:
 		"Checks the signature of pasted base64 / data-uri content and reports whether it is a real PNG.",
@@ -254,6 +262,7 @@ const verifyIsPng: ToolEntry<NoParams> = {
 
 const pngIsGrayscale: ToolEntry<NoParams> = {
 	id: "png-is-grayscale",
+	slug: "png-is-grayscale",
 	title: "Check: is PNG grayscale?",
 	description: "Reports whether the image consists only of shades of gray.",
 	category: "analyze",
@@ -265,6 +274,7 @@ const pngIsGrayscale: ToolEntry<NoParams> = {
 
 const pngFileSize: ToolEntry<NoParams> = {
 	id: "png-file-size",
+	slug: "png-file-size",
 	title: "PNG File Size",
 	description: "Encodes the image as PNG and reports the resulting file size.",
 	category: "analyze",
@@ -282,6 +292,7 @@ const pngFileSize: ToolEntry<NoParams> = {
 
 const pngIsTransparent: ToolEntry<NoParams> = {
 	id: "png-is-transparent",
+	slug: "png-is-transparent",
 	title: "Check: is PNG transparent?",
 	description:
 		"Reports whether the image contains transparent or semi-transparent pixels.",
@@ -296,6 +307,7 @@ const pngIsTransparent: ToolEntry<NoParams> = {
 
 const pngOrientation: ToolEntry<NoParams> = {
 	id: "png-orientation",
+	slug: "png-orientation",
 	title: "PNG orientation",
 	description: "Reports whether it is portrait, landscape or square.",
 	category: "analyze",
diff --git a/web/src/lib/registry/color.ts b/web/src/lib/registry/color.ts
index f8feca4..29ce974 100644
--- a/web/src/lib/registry/color.ts
+++ b/web/src/lib/registry/color.ts
@@ -45,6 +45,7 @@ export const twoColorsSchema = toolSchema<TwoColorsParams>({
 
 const twoColorsTool: ToolEntry<TwoColorsParams> = {
 	id: "two-colors-png",
+	slug: "two-colors-png",
 	title: "Two colors PNG",
 	description:
 		"Recolors the image into two chosen colors by luminance threshold.",
@@ -70,6 +71,7 @@ export const gammaSchema = toolSchema<GammaParams>({
 
 const gammaTool: ToolEntry<GammaParams> = {
 	id: "gamma-png",
+	slug: "gamma-png",
 	title: "Gamma correction PNG",
 	description:
 		"Corrects midtone brightness. <1 darker, >1 lighter, 1 — unchanged.",
@@ -95,6 +97,7 @@ export const temperatureSchema = toolSchema<TemperatureParams>({
 
 const temperatureTool: ToolEntry<TemperatureParams> = {
 	id: "temperature-png",
+	slug: "temperature-png",
 	title: "Temperature PNG",
 	description:
 		"Positive values make the image warmer (more orange), negative ones cooler (more blue).",
@@ -122,6 +125,7 @@ export const tintSchema = toolSchema<TintParams>({
 
 const tintTool: ToolEntry<TintParams> = {
 	id: "tint-png",
+	slug: "tint-png",
 	title: "Tint PNG",
 	description:
 		"Multiplies color channels by the chosen tint with the given strength.",
@@ -147,6 +151,7 @@ export const quantizeSchema = toolSchema<QuantizeParams>({
 
 const quantizeTool: ToolEntry<QuantizeParams> = {
 	id: "quantize-png",
+	slug: "quantize-png",
 	title: "Quantize PNG",
 	description:
 		"Reduces the image to k colors via median-cut palette. Transparent pixels are preserved.",
@@ -166,6 +171,7 @@ export const customPaletteSchema = toolSchema<CustomPaletteParams>({
 
 const customPalette: ToolEntry<CustomPaletteParams> = {
 	id: "custom-palette-png",
+	slug: "custom-palette-png",
 	title: "Custom Palette PNG",
 	description:
 		"Maps every pixel to the nearest color from your comma-separated hex list.",
@@ -200,6 +206,7 @@ export const ditheringSchema = toolSchema<DitheringParams>({
 
 const ditheringTool: ToolEntry<DitheringParams> = {
 	id: "dithering-png",
+	slug: "dithering-png",
 	title: "Dithering PNG",
 	description:
 		"Applies Floyd–Steinberg error diffusion or ordered Bayer dithering while reducing to k colors.",
@@ -215,6 +222,7 @@ export const grayscaleSchema = toolSchema<EmptyParams>({});
 
 const grayscaleTool: ToolEntry<EmptyParams> = {
 	id: "grayscale-png",
+	slug: "grayscale-png",
 	title: "Grayscale PNG",
 	description:
 		"Converts the image to shades of gray using the BT.601 luminance formula. Alpha is preserved.",
@@ -228,6 +236,7 @@ export const invertColorsSchema = toolSchema<EmptyParams>({});
 
 const invertColorsTool: ToolEntry<EmptyParams> = {
 	id: "invert-colors-png",
+	slug: "invert-colors-png",
 	title: "Invert colors PNG",
 	description: "Inverts each color channel (255 − value). Alpha is unchanged.",
 	category: "color",
@@ -269,6 +278,7 @@ export const brightnessContrastSchema = toolSchema<BrightnessContrastParams>(
 
 const brightnessContrastTool: ToolEntry<BrightnessContrastParams> = {
 	id: "adjust-brightness-contrast-png",
+	slug: "adjust-brightness-contrast-png",
 	title: "Brightness & contrast PNG",
 	description:
 		"Adjusts brightness and contrast in the range from −100 to +100. Zero means no change.",
@@ -294,6 +304,7 @@ export const opacitySchema = toolSchema<OpacityParams>({
 
 const opacityTool: ToolEntry<OpacityParams> = {
 	id: "change-png-opacity",
+	slug: "change-png-opacity",
 	title: "Change PNG opacity",
 	description:
 		"Multiplies the alpha channel by a percentage: 0% — fully transparent, 100% — unchanged.",
@@ -307,6 +318,7 @@ export const sepiaSchema = toolSchema<EmptyParams>({});
 
 const sepiaTool: ToolEntry<EmptyParams> = {
 	id: "sepia-png",
+	slug: "sepia-png",
 	title: "Sepia effect",
 	description: "Tints the image into the warm brown tones of classic sepia.",
 	category: "color",
@@ -331,6 +343,7 @@ export const hueShiftSchema = toolSchema<HueShiftParams>({
 
 const hueShiftTool: ToolEntry<HueShiftParams> = {
 	id: "change-png-hue",
+	slug: "change-png-hue",
 	title: "Change hue PNG",
 	description:
 		"Shifts the hue around the circle. Saturation and lightness are preserved.",
@@ -358,6 +371,7 @@ export const extractChannelSchema = toolSchema<ExtractChannelParams>({
 
 const extractChannelTool: ToolEntry<ExtractChannelParams> = {
 	id: "extract-channel-png",
+	slug: "extract-channel-png",
 	title: "Extract channel PNG",
 	description:
 		"Keeps only the chosen channel — red, green or blue — as shades of gray.",
@@ -385,6 +399,7 @@ export const swapChannelsSchema = toolSchema<SwapChannelsParams>({
 
 const swapChannelsTool: ToolEntry<SwapChannelsParams> = {
 	id: "swap-channels-png",
+	slug: "swap-channels-png",
 	title: "Swap channels PNG",
 	description:
 		"Swaps two color channels — a quick way to get unusual coloring.",
@@ -410,6 +425,7 @@ export const blackAndWhiteSchema = toolSchema<BlackAndWhiteParams>({
 
 const blackAndWhiteTool: ToolEntry<BlackAndWhiteParams> = {
 	id: "black-and-white-png",
+	slug: "black-and-white-png",
 	title: "Black & white threshold PNG",
 	description:
 		"Hard binarization by luminance: every pixel becomes black or white.",
@@ -435,6 +451,7 @@ export const posterizeSchema = toolSchema<PosterizeParams>({
 
 const posterizeTool: ToolEntry<PosterizeParams> = {
 	id: "posterize-png",
+	slug: "posterize-png",
 	title: "Posterize PNG",
 	description: "Reduces the number of levels per channel — a poster effect.",
 	category: "color",
@@ -447,6 +464,7 @@ export const autoContrastSchema = toolSchema<EmptyParams>({});
 
 const autoContrastTool: ToolEntry<EmptyParams> = {
 	id: "auto-contrast-png",
+	slug: "auto-contrast-png",
 	title: "Auto contrast PNG",
 	description:
 		"Stretches each channel's range across the full available brightness range.",
@@ -483,6 +501,7 @@ export const decreaseColorCountSchema = toolSchema<DecreaseColorCountParams>({
 
 const decreaseColorCountTool: ToolEntry<DecreaseColorCountParams> = {
 	id: "decrease-color-count-png",
+	slug: "decrease-color-count-png",
 	title: "Decrease Color Count PNG",
 	description:
 		"Median-cut engine as a quick way to drop to 2–256 colors. Presets marked (extreme/strong/balanced/light) match the classic compression levels.",
@@ -499,7 +518,6 @@ interface ChannelParams {
 
 type SpaceEntry = {
 	id: SpaceId;
-	suffix: string;
 	title: string;
 	description: string;
 };
@@ -507,42 +525,36 @@ type SpaceEntry = {
 const CHANNEL_SPACES: SpaceEntry[] = [
 	{
 		id: "hsl",
-		suffix: "hsl",
 		title: "Split PNG into HSL",
 		description:
 			"Decomposes the image into Hue, Saturation and Lightness components.",
 	},
 	{
 		id: "hsv",
-		suffix: "hsv",
 		title: "Split PNG into HSV",
 		description:
 			"Decomposes the image into Hue, Saturation and Value (brightness) components.",
 	},
 	{
 		id: "hsi",
-		suffix: "hsi",
 		title: "Split PNG into HSI",
 		description:
 			"Decomposes the image into Hue, Saturation and Intensity components.",
 	},
 	{
 		id: "cmyk",
-		suffix: "cmyk",
 		title: "Convert PNG to CMYK Colors",
 		description:
 			"Decomposes the image into print-style Cyan, Magenta, Yellow and Key (black) components.",
 	},
 	{
 		id: "ycbcr",
-		suffix: "ycbcr",
 		title: "Convert PNG to YCbCr Colors",
 		description:
 			"Decomposes the image into Luma (Y) and Blue-difference / Red-difference chroma components.",
 	},
 	{
 		id: "lab",
-		suffix: "lab",
 		title: "Convert PNG to LAB Colors",
 		description:
 			"Decomposes the image into perceptual Lightness and green–magenta / blue–yellow opponents.",
@@ -553,7 +565,8 @@ function channelEntries(): ToolEntry<ChannelParams>[] {
 	return CHANNEL_SPACES.map((space) => {
 		const components = SPACES[space.id].components;
 		return {
-			id: `png-to-${space.suffix}`,
+			id: `png-to-${space.id}`,
+			slug: `png-to-${space.id}`,
 			title: space.title,
 			description: space.description,
 			category: "color",
diff --git a/web/src/lib/registry/convert.ts b/web/src/lib/registry/convert.ts
index b826063..5c32c1d 100644
--- a/web/src/lib/registry/convert.ts
+++ b/web/src/lib/registry/convert.ts
@@ -40,6 +40,7 @@ export const convertToJpgSchema = toolSchema<ConvertToJpgParams>({
 
 const convertToJpg: ToolEntry<ConvertToJpgParams> = {
 	id: "convert-png-to-jpg",
+	slug: "convert-png-to-jpg",
 	title: "Convert PNG to JPG",
 	description:
 		"Transparency is composited over the chosen backdrop color (white by default) and saved as JPEG.",
@@ -66,6 +67,7 @@ export const convertToWebpSchema = toolSchema<ConvertToWebpParams>({
 
 const convertToWebp: ToolEntry<ConvertToWebpParams> = {
 	id: "convert-png-to-webp",
+	slug: "convert-png-to-webp",
 	title: "Convert PNG to WebP",
 	description:
 		"Re-encodes the image into WebP with adjustable quality. Transparency is preserved.",
@@ -82,6 +84,7 @@ export const convertToBmpSchema = toolSchema<ConvertToBmpParams>({});
 
 const convertToBmp: ToolEntry<ConvertToBmpParams> = {
 	id: "png-to-bmp",
+	slug: "png-to-bmp",
 	title: "Convert PNG to BMP",
 	description:
 		"Saves the image as 24-bit BMP without an alpha channel: transparency is replaced with a black background.",
@@ -98,6 +101,7 @@ const emptySchema = toolSchema<NoParams>({});
 
 const pngToBase64: ToolEntry<NoParams> = {
 	id: "png-to-base64",
+	slug: "png-to-base64",
 	title: "PNG to Base64",
 	description:
 		"Encodes the image into a base64 string for embedding in code or styles.",
@@ -111,6 +115,7 @@ const pngToBase64: ToolEntry<NoParams> = {
 
 const pngToDataUri: ToolEntry<NoParams> = {
 	id: "png-to-data-uri",
+	slug: "png-to-data-uri",
 	title: "PNG to Data URI",
 	description:
 		"Builds a full data-uri (data:image/png;base64,…) for embedding in HTML/CSS.",
@@ -124,6 +129,7 @@ const pngToDataUri: ToolEntry<NoParams> = {
 
 const pngToHex: ToolEntry<NoParams> = {
 	id: "png-to-hex",
+	slug: "png-to-hex",
 	title: "PNG to HEX pixels",
 	description:
 		"Shows all pixels as rrggbbaa hex values — row by row, space separated.",
@@ -136,6 +142,7 @@ const pngToHex: ToolEntry<NoParams> = {
 
 const pngToBytes: ToolEntry<NoParams> = {
 	id: "png-to-bytes",
+	slug: "png-to-bytes",
 	title: "PNG to Bytes",
 	description:
 		"Lists every pixel as four decimal bytes (R G B A), one image row per line.",
@@ -148,6 +155,7 @@ const pngToBytes: ToolEntry<NoParams> = {
 
 const pngToRgbValues: ToolEntry<NoParams> = {
 	id: "png-to-rgb-values",
+	slug: "png-to-rgb-values",
 	title: "PNG to RGB Values",
 	description: "Lists every pixel as rgba(r, g, b, a), one image row per line.",
 	category: "convert",
@@ -159,6 +167,7 @@ const pngToRgbValues: ToolEntry<NoParams> = {
 
 const base64ToPng: ToolEntry<NoParams> = {
 	id: "base64-to-png",
+	slug: "base64-to-png",
 	title: "Base64 to PNG",
 	description:
 		"Decodes a base64 string or data-uri back into an image. Paste the string on the left.",
@@ -171,6 +180,7 @@ const base64ToPng: ToolEntry<NoParams> = {
 
 const dataUriToPng: ToolEntry<NoParams> = {
 	id: "data-uri-to-png",
+	slug: "data-uri-to-png",
 	title: "Data URI to PNG",
 	description: "Decodes data:image/…;base64,… back into an image file.",
 	category: "convert",
@@ -190,6 +200,7 @@ export const hexToPngSchema = toolSchema<HexToPngParams>({
 
 const hexToPng: ToolEntry<HexToPngParams> = {
 	id: "hex-to-png",
+	slug: "hex-to-png",
 	title: "HEX pixels to PNG",
 	description:
 		"Assembles an image from rrggbbaa hex values (space separated). Set the width — the height is computed automatically.",
@@ -209,6 +220,7 @@ export const bytesToPngSchema = toolSchema<BytesToPngParams>({
 
 const bytesToPng: ToolEntry<BytesToPngParams> = {
 	id: "bytes-to-png",
+	slug: "bytes-to-png",
 	title: "Bytes to PNG",
 	description:
 		"Assembles an image from decimal RGBA byte numbers (any separators). Set the width — height is computed automatically.",
@@ -228,6 +240,7 @@ export const rgbValuesToPngSchema = toolSchema<RgbValuesToPngParams>({
 
 const rgbValuesToPng: ToolEntry<RgbValuesToPngParams> = {
 	id: "rgb-values-to-png",
+	slug: "rgb-values-to-png",
 	title: "RGB Values to PNG",
 	description:
 		"Assembles an image from rgba(r, g, b, a) numbers. Set the width — height is computed automatically.",
@@ -247,6 +260,7 @@ export const svgToPngSchema = toolSchema<SvgToPngParams>({
 
 const svgToPng: ToolEntry<SvgToPngParams> = {
 	id: "svg-to-png",
+	slug: "svg-to-png",
 	title: "SVG to PNG",
 	description:
 		"Decodes SVG markup into a raster image. Paste the SVG code on the left.",
diff --git a/web/src/lib/registry/filters.ts b/web/src/lib/registry/filters.ts
index e4c57c9..7fef2d4 100644
--- a/web/src/lib/registry/filters.ts
+++ b/web/src/lib/registry/filters.ts
@@ -26,6 +26,7 @@ export const blurSchema = toolSchema<BlurParams>({
 
 const blurTool: ToolEntry<BlurParams> = {
 	id: "blur-png",
+	slug: "blur-png",
 	title: "Blur PNG",
 	description:
 		"Gaussian blur: three passes of separable box blur — fast at any radius. Transparent edges do not darken.",
@@ -51,6 +52,7 @@ export const sharpenSchema = toolSchema<SharpenParams>({
 
 const sharpenTool: ToolEntry<SharpenParams> = {
 	id: "sharpen-png",
+	slug: "sharpen-png",
 	title: "Sharpen PNG",
 	description:
 		"Emphasizes edges with a sharpening kernel; strength sets the blend with the original. 0% means no change.",
@@ -78,6 +80,7 @@ export const silhouetteSchema = toolSchema<SilhouetteParams>({
 
 const silhouetteTool: ToolEntry<SilhouetteParams> = {
 	id: "silhouette-png",
+	slug: "silhouette-png",
 	title: "Silhouette PNG",
 	description:
 		"Turns all visible pixels into a single solid color while keeping their transparency — instant silhouette.",
@@ -103,6 +106,7 @@ export const vignetteSchema = toolSchema<VignetteParams>({
 
 const vignetteTool: ToolEntry<VignetteParams> = {
 	id: "vignette-png",
+	slug: "vignette-png",
 	title: "Vignette PNG",
 	description:
 		"Smoothly darkens the edges of the image, leaving the center untouched.",
@@ -128,6 +132,7 @@ export const pixelateSchema = toolSchema<PixelateParams>({
 
 const pixelateTool: ToolEntry<PixelateParams> = {
 	id: "pixelate-png",
+	slug: "pixelate-png",
 	title: "Pixelate PNG",
 	description:
 		"Averages every blockSize×blockSize area into one color — classic mosaic.",
@@ -170,6 +175,7 @@ export const randomizePixelsSchema = toolSchema<RandomizePixelsParams>(
 
 const randomizePixels: ToolEntry<RandomizePixelsParams> = {
 	id: "randomize-pixels-png",
+	slug: "randomize-pixels-png",
 	title: "Randomize Pixels PNG",
 	description:
 		"Shuffles blocks of the image between positions. Same seed gives the same arrangement.",
@@ -222,6 +228,7 @@ export const addNoiseSchema = toolSchema<AddNoiseParams>(
 
 const addNoiseTool: ToolEntry<AddNoiseParams> = {
 	id: "add-noise-png",
+	slug: "add-noise-png",
 	title: "Add Noise to PNG",
 	description:
 		"Adds film-grain style noise. Deterministic by seed; monochrome keeps original hue balance.",
@@ -247,6 +254,7 @@ export const jpegArtifactsSchema = toolSchema<JpegArtifactsParams>({
 
 const jpegArtifacts: ToolEntry<JpegArtifactsParams> = {
 	id: "jpeg-artifacts-png",
+	slug: "jpeg-artifacts-png",
 	title: "JPEG artifacts",
 	description:
 		"Simulates low-quality JPEG re-compression — visible blocks and smeared colors.",
diff --git a/web/src/lib/registry/generate.ts b/web/src/lib/registry/generate.ts
index b38ff75..f04e41a 100644
--- a/web/src/lib/registry/generate.ts
+++ b/web/src/lib/registry/generate.ts
@@ -102,6 +102,7 @@ export const createEmptySchema = toolSchema<CreateEmptyParams>(
 
 const createEmpty: ToolEntry<CreateEmptyParams> = {
 	id: "create-empty-png",
+	slug: "create-empty-png",
 	title: "Create empty PNG",
 	description:
 		"Creates a blank canvas of the chosen dimensions, either transparent or filled with a solid color.",
@@ -136,6 +137,7 @@ export const singleColorSchema = toolSchema<SingleColorParams>({
 
 const singleColor: ToolEntry<SingleColorParams> = {
 	id: "single-color-png",
+	slug: "single-color-png",
 	title: "Create solid color PNG",
 	description: "Generates a rectangle of the given size and color.",
 	category: "generate",
@@ -172,6 +174,7 @@ export const randomNoiseSchema = toolSchema<RandomNoiseParams>({
 
 const randomNoise: ToolEntry<RandomNoiseParams> = {
 	id: "random-noise-png",
+	slug: "random-noise-png",
 	title: "Create random noise PNG",
 	description:
 		"Generates an image with random pixels. The seed fixes the result: one seed — one image.",
@@ -218,6 +221,7 @@ export const linearGradientSchema = toolSchema<LinearGradientParams>(
 
 const linearGradient: ToolEntry<LinearGradientParams> = {
 	id: "linear-gradient-png",
+	slug: "linear-gradient-png",
 	title: "Create gradient PNG",
 	description:
 		"Generates a smooth transition between two colors along a chosen angle.",
@@ -291,6 +295,7 @@ export const colorSpectrumSchema = toolSchema<ColorSpectrumParams>(
 
 const colorSpectrumTool: ToolEntry<ColorSpectrumParams> = {
 	id: "color-spectrum-png",
+	slug: "color-spectrum-png",
 	title: "Color Spectrum PNG",
 	description:
 		"Full hue rainbow 0–360° along the chosen axis with adjustable saturation and lightness.",
@@ -346,6 +351,7 @@ export const randomColorsSchema = toolSchema<RandomColorsParams>(
 
 const randomColors: ToolEntry<RandomColorsParams> = {
 	id: "random-colors-png",
+	slug: "random-colors-png",
 	title: "Random Color Blocks PNG",
 	description:
 		"Fills the canvas with random vivid color blocks. Deterministic by seed.",
@@ -420,6 +426,7 @@ export const drawGridSchema = toolSchema<DrawGridParams>(
 
 const drawGridTool: ToolEntry<DrawGridParams> = {
 	id: "draw-grid-png",
+	slug: "draw-grid-png",
 	title: "Draw Grid PNG",
 	description:
 		"Draws a grid with custom columns, rows and line width on a transparent or white background.",
@@ -481,6 +488,7 @@ export const placeholderSchema = toolSchema<PlaceholderParams>(
 
 const placeholder: ToolEntry<PlaceholderParams> = {
 	id: "placeholder-png",
+	slug: "placeholder-png",
 	title: "Create Placeholder PNG",
 	description:
 		"Generates a placeholder rectangle with its dimensions printed in the center.",
@@ -531,6 +539,7 @@ export const blendTwoSchema = toolSchema<BlendTwoParams>({
 
 const blendTwo: ToolEntry<BlendTwoParams> = {
 	id: "blend-two-png",
+	slug: "blend-two-png",
 	title: "Blend Two Colors PNG",
 	description: "A continuous horizontal gradient between two colors.",
 	category: "generate",
@@ -592,6 +601,7 @@ export const stepColorsSchema = toolSchema<StepColorsParams>(
 
 const stepColorsTool: ToolEntry<StepColorsParams> = {
 	id: "step-colors-png",
+	slug: "step-colors-png",
 	title: "Color Steps PNG",
 	description: "A discrete set of evenly spaced steps between two colors.",
 	category: "generate",
@@ -624,6 +634,7 @@ export const emojiToPngSchema = toolSchema<EmojiToPngParams>({
 
 const emojiToPng: ToolEntry<EmojiToPngParams> = {
 	id: "emoji-to-png",
+	slug: "emoji-to-png",
 	title: "Emoji to PNG",
 	description:
 		"Renders an emoji or any Unicode symbol as a transparent PNG of the chosen size.",
@@ -658,6 +669,7 @@ export const colorWheelSchema = toolSchema<ColorWheelParams>({
 
 const colorWheelTool: ToolEntry<ColorWheelParams> = {
 	id: "color-wheel-png",
+	slug: "color-wheel-png",
 	title: "Color Wheel PNG",
 	description:
 		"Generates an HSL color wheel: hue around the circle, saturation from center to edge, chosen lightness.",
@@ -707,6 +719,7 @@ const paletteLayoutGroup = {
 
 const complementaryTool: ToolEntry<PaletteBaseParams> = {
 	id: "complementary-png",
+	slug: "complementary-png",
 	title: "Complementary Palette PNG",
 	description:
 		"Two opposite colors on the color wheel — the base and its complement.",
@@ -723,6 +736,7 @@ const complementaryTool: ToolEntry<PaletteBaseParams> = {
 
 const triadicTool: ToolEntry<PaletteBaseParams> = {
 	id: "triadic-png",
+	slug: "triadic-png",
 	title: "Triadic Palette PNG",
 	description: "Three colors evenly spaced 120° apart on the color wheel.",
 	category: "generate",
@@ -741,6 +755,7 @@ const triadicTool: ToolEntry<PaletteBaseParams> = {
 
 const tetradicTool: ToolEntry<PaletteBaseParams> = {
 	id: "tetradic-png",
+	slug: "tetradic-png",
 	title: "Tetradic Palette PNG",
 	description:
 		"Four colors in two complementary pairs, 90° apart on the wheel.",
@@ -765,6 +780,7 @@ interface AnalogousParams extends PaletteBaseParams {
 
 const analogousTool: ToolEntry<AnalogousParams> = {
 	id: "analogous-png",
+	slug: "analogous-png",
 	title: "Analogous Palette PNG",
 	description:
 		"Neighboring hues around the base color — calm, related color scheme.",
@@ -807,6 +823,7 @@ interface MonochromaticParams extends PaletteBaseParams {
 
 const monochromaticTool: ToolEntry<MonochromaticParams> = {
 	id: "monochromatic-png",
+	slug: "monochromatic-png",
 	title: "Monochromatic Palette PNG",
 	description:
 		"Tones of a single hue: lightness varies within the chosen range, hue and saturation stay fixed.",
@@ -849,6 +866,7 @@ interface ShadesParams extends PaletteBaseParams {
 
 const shadesTool: ToolEntry<ShadesParams> = {
 	id: "shades-png",
+	slug: "shades-png",
 	title: "Shade Ramp PNG",
 	description: "A ramp of the base color getting darker step by step.",
 	category: "generate",
@@ -910,6 +928,7 @@ export const mixColorsSchema = toolSchema<MixColorsParams>(
 
 const mixColorsTool: ToolEntry<MixColorsParams> = {
 	id: "mix-colors-png",
+	slug: "mix-colors-png",
 	title: "Mix Colors PNG",
 	description:
 		"Averages the selected colors into one swatch. Colors become one uniform fill.",
@@ -980,6 +999,7 @@ export const sortColorsSchema = toolSchema<SortColorsParams>(
 
 const sortColorsTool: ToolEntry<SortColorsParams> = {
 	id: "sort-colors-png",
+	slug: "sort-colors-png",
 	title: "Sort Colors PNG",
 	description:
 		"Renders the chosen colors as swatches sorted by hue, brightness or saturation.",
@@ -1047,6 +1067,7 @@ export const textToPngSchema = toolSchema<TextToPngParams>(
 
 const textToPng: ToolEntry<TextToPngParams> = {
 	id: "text-to-png",
+	slug: "text-to-png",
 	title: "Text to PNG",
 	description:
 		"Creates a PNG image from text: the canvas is sized to fit the label plus padding.",
diff --git a/web/src/lib/registry/geometry.ts b/web/src/lib/registry/geometry.ts
index e5b7bd0..2da83ca 100644
--- a/web/src/lib/registry/geometry.ts
+++ b/web/src/lib/registry/geometry.ts
@@ -49,6 +49,7 @@ export const addBorderSchema = toolSchema<AddBorderParams>({
 
 const addBorder: ToolEntry<AddBorderParams> = {
 	id: "add-border-png",
+	slug: "add-border-png",
 	title: "Add border to PNG",
 	description:
 		"Draws a colored frame of the chosen thickness around the image.",
@@ -100,6 +101,7 @@ export const fitOnBackgroundSchema = toolSchema<FitOnBackgroundParams>(
 
 const fitOnBackground: ToolEntry<FitOnBackgroundParams> = {
 	id: "fit-on-background-png",
+	slug: "fit-on-background-png",
 	title: "Fit PNG onto background",
 	description:
 		"Places the image centered on a canvas of the given size with a transparent or colored background.",
@@ -167,6 +169,7 @@ export const changeCanvasSizeSchema = toolSchema<ChangeCanvasSizeParams>(
 
 const changeCanvasSizeTool: ToolEntry<ChangeCanvasSizeParams> = {
 	id: "change-canvas-size-png",
+	slug: "change-canvas-size-png",
 	title: "Change Canvas Size PNG",
 	description:
 		"Sets the exact canvas size: overflow is cropped, missing space is filled with transparency. Anchor picks which part of the image stays.",
@@ -212,6 +215,7 @@ export const resizeSchema = toolSchema<ResizeParams>(
 
 const resizeTool: ToolEntry<ResizeParams> = {
 	id: "resize-png",
+	slug: "resize-png",
 	title: "Resize PNG",
 	description:
 		"Scales the image with bilinear interpolation. With aspect kept, one side defines the scale; if both are set, the image fits inside them.",
@@ -283,6 +287,7 @@ export const cropSchema = toolSchema<CropParams>(
 
 const cropTool: ToolEntry<CropParams> = {
 	id: "crop-png",
+	slug: "crop-png",
 	title: "Crop PNG",
 	description:
 		"Cuts out a rectangular area. Coordinates and sizes may go beyond the image — the area is clipped to the intersection.",
@@ -317,6 +322,7 @@ export const rotateSchema = toolSchema<RotateParams>({
 
 const rotateTool: ToolEntry<RotateParams> = {
 	id: "rotate-png",
+	slug: "rotate-png",
 	title: "Rotate PNG",
 	description: "Rotates by 90°, 180° or 270° clockwise without quality loss.",
 	category: "geometry",
@@ -342,6 +348,7 @@ export const flipSchema = toolSchema<FlipParams>({
 
 const flipTool: ToolEntry<FlipParams> = {
 	id: "flip-png",
+	slug: "flip-png",
 	title: "Flip PNG",
 	description: "Mirrors horizontally or vertically without quality loss.",
 	category: "geometry",
@@ -380,6 +387,7 @@ export const addPaddingSchema = toolSchema<AddPaddingParams>(
 
 const addPaddingTool: ToolEntry<AddPaddingParams> = {
 	id: "add-padding-png",
+	slug: "add-padding-png",
 	title: "Add padding to PNG",
 	description:
 		"Expands the canvas on all sides by the chosen number of pixels.",
@@ -422,6 +430,7 @@ export const tileSchema = toolSchema<TileParams>({
 
 const tileTool: ToolEntry<TileParams> = {
 	id: "tile-png",
+	slug: "tile-png",
 	title: "Tile PNG",
 	description: "Repeats the image in a grid of the chosen columns and rows.",
 	category: "geometry",
@@ -456,6 +465,7 @@ export const splitPartsSchema = toolSchema<SplitPartsParams>({
 
 const splitPartsTool: ToolEntry<SplitPartsParams> = {
 	id: "split-into-parts-png",
+	slug: "split-into-parts-png",
 	title: "Split PNG into parts",
 	description:
 		"Divides the image into a grid of equal-sized parts. The canvas is padded with transparency to keep every part the same size.",
@@ -493,6 +503,7 @@ export const centerByAlphaSchema = toolSchema<EmptyParams>({});
 
 const centerByAlphaTool: ToolEntry<EmptyParams> = {
 	id: "center-by-alpha-png",
+	slug: "center-by-alpha-png",
 	title: "Center PNG by content",
 	description:
 		"Finds the opaque part of the image and centers it on the original canvas.",
@@ -526,6 +537,7 @@ export const skewSchema = toolSchema<SkewParams>({
 
 const skewTool: ToolEntry<SkewParams> = {
 	id: "skew-png",
+	slug: "skew-png",
 	title: "Skew PNG",
 	description:
 		"Shifts content horizontally and vertically — a perspective effect.",
@@ -551,6 +563,7 @@ export const rotateFreeSchema = toolSchema<RotateFreeParams>({
 
 const rotateFreeTool: ToolEntry<RotateFreeParams> = {
 	id: "rotate-free-png",
+	slug: "rotate-free-png",
 	title: "Rotate by custom angle",
 	description:
 		"Rotation by any angle. The canvas grows to fit the new bounds; corners stay transparent.",
@@ -576,6 +589,7 @@ export const zoomSchema = toolSchema<ZoomParams>({
 
 const zoomTool: ToolEntry<ZoomParams> = {
 	id: "zoom-png",
+	slug: "zoom-png",
 	title: "Zoom PNG",
 	description:
 		"Magnifies content toward the center. The canvas keeps its size — edges are cropped.",
@@ -601,6 +615,7 @@ export const trimEmptySpaceSchema = toolSchema<TrimEmptySpaceParams>({
 
 const trimEmptySpaceTool: ToolEntry<TrimEmptySpaceParams> = {
 	id: "trim-empty-space-png",
+	slug: "trim-empty-space-png",
 	title: "Trim Empty Space PNG",
 	description:
 		"Crops transparent borders around the content. Pixels with alpha above the threshold count as content.",
@@ -643,6 +658,7 @@ export const changeAspectRatioSchema = toolSchema<ChangeAspectRatioParams>({
 
 const changeAspectRatioTool: ToolEntry<ChangeAspectRatioParams> = {
 	id: "change-aspect-ratio-png",
+	slug: "change-aspect-ratio-png",
 	title: "Change Aspect Ratio PNG",
 	description:
 		"Fits the image into a target aspect ratio: crop the center to fill, or pad with transparency.",
@@ -673,6 +689,7 @@ export const swapOrientationSchema = toolSchema<SwapOrientationParams>({
 
 const swapOrientationTool: ToolEntry<SwapOrientationParams> = {
 	id: "swap-orientation-png",
+	slug: "swap-orientation-png",
 	title: "Swap Orientation PNG",
 	description:
 		"Rotates the image by 90° when its orientation differs from the target — landscape becomes portrait and back. Square images are untouched.",
@@ -713,6 +730,7 @@ export const symmetricCopySchema = toolSchema<SymmetricCopyParams>({
 
 const symmetricCopyTool: ToolEntry<SymmetricCopyParams> = {
 	id: "symmetric-copy-png",
+	slug: "symmetric-copy-png",
 	title: "Symmetric Copy PNG",
 	description:
 		"Doubles the canvas by mirroring the kept side onto the empty half — instant symmetric pattern.",
@@ -748,6 +766,7 @@ export const shiftSchema = toolSchema<ShiftParams>({
 
 const shiftTool: ToolEntry<ShiftParams> = {
 	id: "shift-png",
+	slug: "shift-png",
 	title: "Shift PNG",
 	description: "Moves content by the given X and Y offset.",
 	category: "geometry",
diff --git a/web/src/lib/registry/index.ts b/web/src/lib/registry/index.ts
index ff89d7a..fbb5265 100644
--- a/web/src/lib/registry/index.ts
+++ b/web/src/lib/registry/index.ts
@@ -42,3 +42,8 @@ export const TOOLS: ToolEntry[] = [
 export function getTool(id: string): ToolEntry | undefined {
 	return TOOLS.find((tool) => tool.id === id);
 }
+
+/** Поиск по адресу страницы; `getTool` остаётся поиском по внутреннему имени. */
+export function getToolBySlug(slug: string): ToolEntry | undefined {
+	return TOOLS.find((tool) => tool.slug === slug);
+}
diff --git a/web/src/lib/registry/registry.test.ts b/web/src/lib/registry/registry.test.ts
index 9eea41b..34d7466 100644
--- a/web/src/lib/registry/registry.test.ts
+++ b/web/src/lib/registry/registry.test.ts
@@ -19,6 +19,21 @@ describe("registry-new (переведённые инструменты)", () =>
 		expect(new Set(ids).size).toBe(ids.length);
 	});
 
+	it("slug уникальны", () => {
+		const slugs = TOOLS.map((t) => t.slug);
+		expect(new Set(slugs).size).toBe(slugs.length);
+	});
+
+	it("id и slug пригодны для адреса и для кода", () => {
+		// Тот же формат, что разбирает `tools-map-doc.test.ts`: латиница в
+		// нижнем регистре, слова через дефис.
+		const shape = /^[a-z][a-z0-9]*(-[a-z0-9]+)*$/;
+		for (const tool of TOOLS) {
+			expect(shape.test(tool.id), `id: ${tool.id}`).toBe(true);
+			expect(shape.test(tool.slug), `slug: ${tool.slug}`).toBe(true);
+		}
+	});
+
 	it("PREVIEW_GROUPS строится без ошибок", () => {
 		expect(PREVIEW_GROUPS.length).toBeGreaterThan(0);
 		expect(PREVIEW_GROUPS.reduce((n, g) => n + g.tools.length, 0)).toBe(
diff --git a/web/src/lib/registry/text.ts b/web/src/lib/registry/text.ts
index f051c47..1b36f05 100644
--- a/web/src/lib/registry/text.ts
+++ b/web/src/lib/registry/text.ts
@@ -60,6 +60,7 @@ const addTextSchema = toolSchema<AddTextParams>(
 
 const addText: ToolEntry<AddTextParams> = {
 	id: "add-text-png",
+	slug: "add-text-png",
 	title: "Add text to PNG",
 	description:
 		"Draws a text label on the image: font, size, color, bold, position on a 3×3 grid and an optional backing plate.",
@@ -138,6 +139,7 @@ const dateStampSchema = toolSchema<DateStampParams>(
 
 const dateStamp: ToolEntry<DateStampParams> = {
 	id: "date-stamp-png",
+	slug: "date-stamp-png",
 	title: "Date stamp PNG",
 	description:
 		"Stamps the current date and time using a format string (YYYY MM DD hh mm ss tokens). Same styling options as Add text.",
@@ -231,6 +233,7 @@ const watermarkTileSchema = toolSchema<WatermarkTileParams>(
 
 const watermarkTile: ToolEntry<WatermarkTileParams> = {
 	id: "watermark-tile-png",
+	slug: "watermark-tile-png",
 	title: "Watermark Tile PNG",
 	description:
 		"Covers the image with a repeating diagonal semi-transparent text tile — a protection watermark.",
diff --git a/web/src/lib/registry/types.ts b/web/src/lib/registry/types.ts
index 2400bb4..254d472 100644
--- a/web/src/lib/registry/types.ts
+++ b/web/src/lib/registry/types.ts
@@ -70,7 +70,13 @@ export type ToolResult = PixelImage | string | FileResult | VerdictResult;
  * `generate`/`runFromText`/`toText`/`textToText` нет.
  */
 export type ToolEntry<P = Record<string, unknown>> = {
+	/** Внутреннее имя: ключ i18n `tools.<id>.*`, `toolId` worker-протокола, запись пайплайна. */
 	id: string;
+	/**
+	 * Адрес страницы `/tools/<slug>` и база имени скачиваемого файла. Инструмент
+	 * работает с любым форматом, поэтому png-интент держит slug, а не id.
+	 */
+	slug: string;
 	title: string;
 	description: string;
 	category: CategoryId;