➜ beavr / tools
All tools 32 of them
32 browser-only tools, grouped by what they do.
Text & Writing — 4
- Word Counter Live word, character, sentence, paragraph, and reading-time counts as you type. CJK-aware.
- Case Converter Convert text to UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, or CONSTANT_CASE. Live, in your browser.
- Text Diff Compare two texts and see the differences line by line. Side-by-side or unified view, copy as unified diff. Live, no upload.
- Word & Character Frequency Count word, bigram, and character frequencies. Stop-words, min length, case sensitivity, sortable results, copy as TSV. Live, no upload.
Converters — 10
- Markdown to HTML Convert Markdown to HTML in your browser. Live side-by-side editor and preview, copy the HTML, no upload, no tracking.
- Base64 Encoder / Decoder Encode and decode base64 with UTF-8 awareness. Paste a string, get base64; paste base64, get the string.
- Unix Timestamp Converter Convert Unix timestamps to ISO 8601 and RFC 2822, and the other way. Add or subtract seconds, minutes, hours, days.
- Unit Converter Convert between common units of length, mass, temperature, time, and data. Live updates, copy to clipboard, swap units in one click.
- Slugifier Turn text into a clean URL slug. Hyphen, underscore, or dot separator. Stop words, max length, ASCII-only, bulk unique. Live.
- JSON to CSV / CSV to JSON Convert between JSON and CSV. Comma, semicolon, tab, or pipe delimiter. Live, RFC 4180, no upload.
- Markdown Table Generator TSV, CSV, JSON, or existing markdown → clean markdown table. Per-column alignment, auto-numeric right-align. Live, in-browser, no upload.
- Markdown Table of Contents Generator Paste a Markdown document and get a Table of Contents back. Markdown list with anchor links, nested HTML, or plain outline. Skips code fences, frontmatter, and HTML comments. Live, in-browser, no upload.
- Image to Data URL (Base64) Drop an image and get a base64 data URL back. PNG, JPEG, GIF, WebP, SVG, BMP, ICO, AVIF. Pick data URL, CSS url(), or raw base64. Preview, copy, or download. Pure client-side, 10 MiB cap, no upload.
- Image Compressor Resize and re-encode images in your browser. JPEG, WebP, or PNG output; pick a max width and a quality. Side-by-side preview with byte counts and savings ratio. Download, no upload.
Developer Tools — 10
- JSON Formatter Pretty-print, validate, and minify JSON. Errors are surfaced inline. Nothing leaves your browser.
- Regex Tester Test regular expressions live. Highlights matches, lists capture groups, toggles flags, and ships a preset library (email, URL, IPv4, UUID, hex colour).
- Hash Generator Compute SHA-1, SHA-256, SHA-384, or SHA-512 hashes of text using Web Crypto. Live, hex or base64url output, no upload.
- URL Encoder / Decoder Encode or decode URL strings. Component mode, URI mode, and encode-all mode (encodes tilde too). UTF-8 aware, live, no upload.
- CSS Minifier / Formatter Minify CSS for production (strip comments, shorten colors, zero lengths) or pretty-print it for reading. Live byte savings.
- Cron Expression Explainer Paste a cron expression and see what it means in plain English, plus the next 10 runs in your local time. Live, no upload.
- robots.txt Viewer & Linter Parse, lint, and format robots.txt files. Catches full-site block, bad Sitemap URL, missing colons, stacked groups. Live, in-browser, no upload.
- Meta-Tag & SEO Preview Preview how your page will look in Google, X, Facebook, LinkedIn, and Slack. Length checks, copy-ready meta tags. Live, in-browser, no upload.
- Regex Cheatsheet 24 common regex tokens, click-to-load playground, live match highlighting with capture groups and named groups. In-browser, no upload.
- JSON Diff Compare two JSON documents and see what changed, was added, or was removed at every path. Side-by-side tree, inline tree, or copy as JSON Patch. Live, in-browser, no upload.
Generators — 8
- UUID Generator Generate UUIDs in your browser. v4 random or v7 time-ordered. Single click or bulk up to 100.
- QR Code Generator Generate a QR code from text or a URL. Output is SVG (sharp at any size) and you can download as PNG. Nothing leaves your browser.
- Password Generator Generate cryptographically random passwords in your browser. Configurable length, character classes, and an entropy estimate. Nothing is uploaded.
- Colour Picker Pick a colour and see it in hex, rgb, and hsl. Get a 9-step tint and shade ramp and a WCAG 2.x contrast check between any two colours. Free, in-browser, no upload.
- Lorem Ipsum Generator Generate Lorem Ipsum placeholder text. By word, sentence, paragraph, or byte count. Live, copy with one click, no upload.
- Colour Contrast Checker (WCAG) Check contrast ratio between two colours against WCAG 2.x AA and AAA. Normal text, large text, UI components. Live preview at 6 sizes, in-browser, no upload.
- Pomodoro Timer Classic 25-minute focus / 5-minute short break / 15-minute long break cycle. Customisable durations, SVG progress ring, soft Web Audio chime, daily counter and streak stored locally. Runs in your browser, no upload.
- Stopwatch Browser stopwatch with millisecond precision, lap splits, per-lap split and delta times, copy or download as TSV. Keyboard shortcuts, in-browser only, no upload.