A collection of small, focused developer tools. No accounts, no tracking — just utilities that work.
| Tool | Description | Docs |
|---|---|---|
| base64 | Encode and decode base64 strings with live sync and shareable permalinks | docs |
| bitwise | Visualize AND, OR, XOR, NAND, NOR, and shift operations with binary and decimal output side by side | docs |
| chmod | Convert between numeric and symbolic Unix file permission modes with a visual breakdown table | docs |
| cidr | Calculate subnet details from CIDR notation: network address, broadcast, mask, host range, and more | docs |
| color | Convert color values between HEX, RGB, RGBA, HSL, and OKLCH with live preview | docs |
| cron | Parse cron expressions into plain English and preview the next 10 scheduled run times | docs |
| css unit | Convert between CSS units: px, rem, em, %, vh, vw, pt, cm, mm, in with adjustable context | docs |
| datetime | Convert timestamps and dates between many formats at once with live sync and shareable permalinks | docs |
| hash | Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text input | docs |
| html entity | Encode and decode HTML entities for safe display in web pages with multiple encoding modes | docs |
| iframe proxy | Proxy iframes securely with full event handling and introspection for debugging | docs |
| jwt | Decode JWT tokens and inspect header, payload claims, and expiry status | docs |
| lorem ipsum | Generate lorem ipsum placeholder text by words, sentences, or paragraphs with one click | docs |
| message factory | Design and trigger postMessage actions with an interactive viewer and designer | docs |
| message stream | Capture and inspect frame messages in real time | docs |
| number base | Convert integers between binary, octal, decimal, and hex with live sync and shareable permalinks | docs |
| pretty print | Format and validate JSON with live pretty-printing and shareable permalinks | docs |
| qr code | Generate QR codes from any text or URL and download as SVG or PNG | docs |
| regex | Test regular expressions against strings with live match results and shareable permalinks | docs |
| text stats | Analyze text statistics: character count, word count, reading time, and word frequency analysis | docs |
| unicode | Inspect each character's code point, UTF-8/UTF-16 encoding, category, script, and HTML entity | docs |
| url encode | Encode and decode URL strings with live sync and shareable permalinks | docs |
| uuid | Generate UUIDs of any version with one click and shareable permalinks | docs |
| webhook | Capture and inspect incoming HTTP webhook requests in real time | docs |
Next.js · TypeScript · Planetscale (Postgres) · Vercel