- New tool: Accessibility Checker — audit HTML, JSX and Astro markup against 20 WCAG 2.2 rules covering images, forms, ARIA, headings, contrast and focus order, with source-scanning and DOM engines. Everything runs in your browser — no uploads
- Prompt Token Saver: accurate o200k token counts, live compression with a word-level visual diff, a low-overlap similarity warning, and safer abbreviations via a preserve-list
- Every upload zone now accepts pastes — Ctrl/Cmd+V an image from the clipboard, or paste a copied link or image address to fetch the file directly, with an inline notice if the site blocks cross-site requests
- Home page: rebuilt hero with search-first layout and trust row, a What's new section with the latest releases, a full changelog timeline page, a header theme switcher, and a footer version stamp
Free tools that run entirely in your browser.
33 developer utilities — compress PDFs, convert fonts, check contrast — with no uploads, no account, no tracking.
v7.5MIT licensedNo uploads, ever
Images & Documents
Compress PNG, JPG, WebP and SVG files in-browser with live before/after size comparison. No uploads.
Resize images to exact pixel dimensions with contain, cover, stretch or pad fit modes.
Convert between PNG, JPEG, WebP, AVIF, SVG, HEIC and BMP. All processing happens locally.
Generate a multi-size .ico favicon from PNG, JPG, SVG or WebP. Choose preset or custom sizes.
Reorder and merge PDF pages in your browser. Drag thumbnails to rearrange, remove pages, and download a merged PDF.
Convert PDFs to PNG or JPG images, bundle images into a PDF, or extract text — all in your browser.
Compress PDFs across four quality levels with live estimated size shown as you switch.
Compare any two text, code or PDF files. Highlights every addition, removal and change with inline precision.
Strip EXIF, GPS, XMP and document metadata from JPG, PNG, WebP and PDF files. Detects metadata in HEIC and AVIF too. See exactly what was found and removed. No uploads.
Typography & Color
Convert TTF, OTF, WOFF and WOFF2 font files in-browser. Download all formats in one click.
Check WCAG 2.1 AA and AAA contrast ratios between any two colours with shade suggestions.
Generate harmonious colour palettes from a base colour using HSL-based colour theory rules.
Build linear and radial CSS gradients with a visual editor and copy-ready CSS output.
Generate tints and shades from any colour with CSS variable and JSON export for design tokens.
Paste any HEX, RGB or HSL value and find its closest named color using CIE Lab ΔE matching.
Extract dominant colors from any image as HEX, RGB, or HSL. Export as CSS variables, JSON, or Tailwind config.
Code & Web
Audit HTML, JSX and Astro markup against 20 WCAG 2.2 rules — images, forms, ARIA, headings, contrast and focus order. Runs in your browser.
Beautify or minify JavaScript, CSS and HTML with configurable indent and print-width options.
Minify JS, CSS and HTML to reduce bundle size. Shows original vs minified byte counts.
Compile SCSS to plain CSS in-browser. Supports variables, nesting, mixins and functions.
Replace div-soup with semantic HTML5 elements. Paste markup, get accessible structure back.
Enter any URL — extract its colour palette, typography, logos and metadata from the page CSS.
Drop XD artboard SVG exports, drag to set screen order, download a numbered ZIP for Figma import.
Validate, auto-repair and preview SVG files in your browser. Detects XML errors, missing attributes, and unsafe scripts.
Compress verbose AI prompts to cut token usage. Collapses filler phrases, abbreviates tech jargon, and protects code blocks.
Text & Data
Format, minify, validate and sort JSON with the exact line and column of any syntax error. Runs in your browser — nothing is uploaded.
Encode and decode Base64, Base64URL, percent-encoding and hex. Handles full Unicode and shows a hex dump for binary data.
Decode a JWT and read its header, claims and expiry. A token is a live credential — this one never leaves your browser.
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, CRC32 and HMAC digests from text or a file, and compare against a published checksum.
Generate UUID v4, UUID v7, ULID and Nano ID in bulk, and inspect any UUID for its version and embedded timestamp.
Test regular expressions with live match highlighting, capture groups and a plain-English breakdown. Warns before a pattern that could hang the page.
Translate a cron expression into plain English and see its next run times. Catches the day-of-week rule that trips everyone up.
Convert Unix timestamps to dates and back, in seconds, milliseconds, microseconds or nanoseconds — with the unit detected automatically.
// What's new
Full history →- Accessibility audit pass — every page now scores 100 on Lighthouse accessibility, with properly labelled controls, keyboard-operable upload zones, a main landmark on every page and contrast fixes throughout
- Image Resizer now starts with the upload field like every other tool, and preset controls sit below the settings they capture with a clearer button style
- Tool health page reframed around live status — all-tools-operational by default, with honest per-tool counts if anything ever fails
- Toolbox is now Toolkist, live at toolkist.app. Every existing link keeps working — the old address redirects to the matching page on the new one, so saved bookmarks and shared links land where you expect. Nothing about how the tools work has changed, and everything still runs entirely in your browser with no uploads