Image & design tools
Convert, resize, compress and recolor images and SVGs — plus color palettes, gradients and contrast checks.
Color Contrast Checker
WCAG colour contrast checker — get the contrast ratio and AA / AAA pass-fail for any text and background colour, plus an accessible suggestion. Free, in-browser.
Color converter
Convert a color between HEX, RGB(A), HSL, HSV and CMYK, in your browser. Paste any notation and get them all. Nothing is uploaded.
Color palette generator
Generate a color palette from any base color — complementary, analogous, triadic, tetradic, monochromatic, shades and tints. Free, runs in your browser.
Color shades generator
Generate a ramp of tints, shades and tones from any base color, including a Tailwind-style 50-900 scale, in HEX, RGB and HSL. Runs in your browser, nothing is uploaded.
CSS Gradient Generator
Generate CSS linear, radial and conic gradients — pick type, angle and color stops, then copy a ready-to-paste background-image. Free, in-browser.
Data URI Encoder
Turn text into a self-contained data: URI with a chosen MIME type and Base64 or percent encoding. No sign-up, runs offline in your browser.
DOT to SVG
Render Graphviz DOT source to a clean, scalable SVG in your browser — no Graphviz install. Directed and undirected graphs, labels, dark mode. No upload.
GeoJSON to SVG
Render GeoJSON to a scalable SVG map in your browser — polygons, lines and points, Web-Mercator or raw lon/lat, custom colours. No tile server, no upload.
Replace an Image Background (Chroma Key)
Chroma-key a green-screen or solid-color background out and drop the subject onto a transparent, solid, or gradient background — free, in your browser.
Compress an Image
Shrink an image's file size right in your browser — re-encode a JPG, PNG, or WebP at a chosen quality, same format out. No upload to a server, runs locally, free.
Convert an Image
Convert any image to JPEG, PNG, or WebP right in your browser — pick a target format and quality. No upload to a server, runs locally, free.
Crop an Image
Crop any image right in your browser — set the x/y offset and the width/height of the rectangle to keep. No upload to a server, runs locally, free.
Convert an Image to Grayscale
Convert any image to grayscale instantly in your browser. No upload to a server, runs locally, completely free.
Resize an Image
Resize any image right in your browser — set a width and/or height, pick a fit mode. No upload to a server, runs locally, free.
Compress an Image to a Target File Size
Compress a JPG or WebP to a target file size in KB. Enter a KB budget and it searches the best quality that fits — all in your browser, nothing uploaded, free.
Shrink an Image for Sharing
Downscale, strip EXIF metadata, and compress a photo in one step for messaging, email or upload. Runs locally in your browser — nothing is uploaded, free.
Add a Vignette to an Image
Add a dark, light or colored vignette around the edges of a photo, right in your browser — adjustable strength, center and output format. Nothing is uploaded, free.
Outline to Mind Map
Paste an indented text outline and get a clean mind-map SVG in your browser — nothing uploaded. Indentation sets nesting; right or top-down layouts, dark theme.
Photo Filter Presets
Apply a one-click photo filter — sepia, vintage, warm, cool, noir, grayscale, vivid, invert, or fade — right in your browser. No upload to a server, runs locally, free.
SVG Optimizer
Minify and clean SVG in your browser — collapse whitespace, strip comments, the XML prolog and Inkscape/Sodipodi metadata. Path data is untouched. Nothing uploaded.
SVG Recolor
Recolor SVG online free — swap colors with from→to pairs or tint the whole icon monochrome; matches #fff, rgb() and named colors right in your browser.
SVG Sprite Sheet Builder
Combine multiple SVG icons into one symbol sprite sheet referenced with <use href> — auto, id, or title naming and automatic viewBox. Free, in your browser.
Extract a Video Frame
Grab a single frame from any video as a PNG image, right in your browser — pick a timestamp in seconds. Runs locally with ffmpeg, nothing is uploaded, free.
Waveform Image from Audio
Turn any audio file into a waveform PNG in your browser — pick the size, solid or gradient wave colors and background, or keep it transparent. Nothing is uploaded.