Free browser-based utilities that streamline coding tasks with instant text processing, data conversion, and validation capabilities.
Meeting Cost Calculator Add the number of attendees and an average hourly rate, then press Start Meeting. A live cost ticker counts upward in real time as the meeting runs, so everyone in the room can see exactly what the discussion is costing the company minute by minute. Pause when there is a break, resume ...
Try the Tool »Makefile Formatter Paste a Makefile and the formatter normalizes it to GNU make’s strict tab-indented recipe rules. Recipe lines that use spaces instead of tabs (the most common cause of “missing separator” errors and a frequent issue with AI-generated Makefiles) are repaired automatically. Trailing whitespace, runaway blank lines, and inconsistent assignment spacing are cleaned up ...
Try the Tool »Color Tint & Shade Generator Pick a hex or RGB color and instantly get 10 tints (your color blended toward white) and 10 shades (blended toward black) as visual swatches. Click any swatch to copy its hex code, or export the full set as CSS custom properties, SCSS variables, JSON, or a plain hex list. ...
Try the Tool »Cloud Bandwidth Cost Estimator This tool estimates how much you will pay each month for outbound internet egress on the major cloud providers, using current published list prices for AWS, Google Cloud, Azure, Cloudflare, DigitalOcean, and Backblaze B2. Enter your expected monthly transfer in GB, TB, or PB, pick the provider you currently use, and ...
Try the Tool »Package.json Generator Create a valid package.json from a structured form instead of memorizing every field. Set the package name, version, license, module system (ESM or CommonJS), Node engine, scripts, and dependencies, and the tool produces a clean, properly ordered manifest you can drop straight into a project. Unlike a formatter that reshuffles an existing file, ...
Try the Tool »IPv4 to IPv6 Converter Convert any IPv4 address into every standard IPv6 representation in one click. The tool generates the IPv4-mapped form used by dual-stack sockets, the 6to4 prefix that delegates a /48 to a public IPv4, the deprecated IPv4-compatible form kept for legacy lookups, and the reverse DNS PTR record under ip6.arpa. Each result ...
Try the Tool »Fake IP Address Generator Generate batches of valid fake IPv4 and IPv6 addresses, filtered by RFC range type — private (RFC 1918), public, loopback, multicast, CGNAT (RFC 6598), link-local, ULA (RFC 4193), and documentation. Useful for seeding test data, populating mock APIs, demoing dashboards, or producing example traffic logs without leaking real addresses. How to ...
Try the Tool »Dockerfile Generator Build a production-ready Dockerfile in seconds. Pick a stack like Node.js, Python, Go, OpenJDK, Ruby, PHP, Rust, .NET, Nginx, Alpine, Ubuntu, or Debian and the generator seeds sensible defaults for the base image, environment variables, dependency files, install command, exposed port, and runtime user. Tweak any field and the Dockerfile updates instantly with ...
Try the Tool »Java Properties File Formatter This tool formats Java .properties files using the same rules the JDK uses to load them. It accepts =, :, or whitespace as a separator, recognises both # and ! comment styles, and joins backslash continuation lines into clean single-line key/value pairs. Use it on application.properties, logback.properties, ResourceBundle messages_*.properties, or any ...
Try the Tool »CAGR Calculator The CAGR Calculator finds the compound annual growth rate of an investment, business metric, or any value that grows over time. Enter a starting value, an ending value, and the number of years, and the tool computes the smooth annual rate that would carry the start to the end if it grew at ...
Try the Tool »HAR File Formatter & Request Inspector Drop in an HTTP Archive (.har) file exported from your browser’s DevTools and instantly see every request as a sortable, filterable waterfall — with full DNS, connect, SSL, wait, and download timings, plus the raw headers, body, and a ready-to-paste cURL command for any single request. Everything runs locally ...
Try the Tool »NDJSON Formatter & Validator Paste a Newline-Delimited JSON (NDJSON / JSON Lines) document and check every record at once. Each line is parsed independently, so a single broken record does not hide the rest. The tool reports valid and invalid line counts, the most common top-level keys, and the exact parse error for any line ...
Try the Tool »Base64 Image Preview & Decoder Paste a base64-encoded image string and instantly preview the rendered image, with the format auto-detected from the file’s magic bytes. The decoded image, its pixel dimensions, and the decoded byte size are all computed in your browser – no server upload, no waiting on an API. The optional data: URI ...
Try the Tool »WebRTC IP Leak Detector WebRTC is a built-in browser API that powers voice and video calls without plugins. To connect two peers directly, it uses the ICE framework to gather candidate IP addresses — and that list includes the machine’s local LAN IP plus any public address a STUN server can see. When users run ...
Try the Tool »Tailwind CSS Color Scale Generator Paste a single hex color and instantly get a full Tailwind-style 50 to 950 palette with perceptually even steps. The scale is built in OKLCH color space, so every stop feels like an even lightness jump to the human eye — not just a linear drop in RGB or HSL. ...
Try the Tool »Package.json Formatter & Key Sorter Paste any package.json to get a clean, canonical-ordered version back instantly. This tool reorders top-level keys to the standard npm sequence (name, version, description, scripts, dependencies, and so on), validates required and recommended fields, checks your dependency version ranges, and flags non-standard keys that clutter the manifest. Everything happens in ...
Try the Tool »Pixel Art Canvas & CSS Export Paint crisp 8-bit style sprites directly in your browser and export them as pure-CSS box-shadow art, scalable SVG, raster PNG, or portable JSON. The canvas scales from 8×8 up to 64×64, ships with classic palettes (NES, Game Boy, PICO-8, CGA, Commodore 64, Sweetie 16), and gives you paint, eraser, ...
Try the Tool »Sprint Velocity & Capacity Calculator Plan your next sprint with math, not guesswork. Feed in your velocity history, team size, PTO, and focus factor, and get an evidence-based commitment range in story points and hours. How to Use Enter your team size and sprint length in working days. Set productive hours per person per day ...
Try the Tool »Solar Panel Output Calculator Estimate the real-world energy output of a solar panel array in daily, monthly, and annual kWh, along with projected savings, CO₂ offset, and a battery size recommendation. Unlike vague AI-generated estimates, this tool accounts for system losses and panel degradation over a 25-year lifetime so you get a realistic picture instead ...
Try the Tool ».env vs .env.example Key Diff Tool Drift between your actual .env file and the .env.example template is one of the quietest sources of broken deploys. Keys get added in development, copied into production, and then forgotten in the template. Placeholder values stick around in .env where real secrets were supposed to land. This tool lines ...
Try the Tool »Add IO tools to your favorite browser for instant access and faster searching
Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Update: Our latest tool was added on Jun 26, 2026
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