Tools
Free browser-based utilities. No login, no tracking — everything runs client-side.
AI
Token Counter
Estimate token usage across Claude, GPT-4o, Llama, and Gemini context windows.
AI Prompt Builder
Structure a prompt with role, task, context, format, and constraints. Includes common templates.
.env Generator
Build a .env file from key-value pairs with presets for Next.js, Flask, Claude API, AWS, and Firebase.
Developer
JSON Formatter
Validate and pretty-print JSON with error highlighting.
Base64 Encoder / Decoder
Encode or decode Base64 strings instantly.
Regex Tester
Write a pattern and test it against sample strings with live match highlighting.
Cron Explainer
Paste a cron expression and get a plain-English explanation with next run times.
Color Palette Generator
Input a hex colour and get complementary, analogous, and Tailwind-equivalent swatches.
UUID Generator
Generate UUIDs in bulk. V4 by default.
JWT Decoder
Paste a token and inspect the header and payload. Nothing leaves your browser.
Text & Data
Word Counter
Word count, character count, sentence count, and estimated reading time.
Markdown Previewer
Write markdown on the left, see the rendered output on the right.
CSV → JSON
Paste CSV data and get clean, formatted JSON output.
Diff Checker
Paste two blocks of text and see exactly what changed, highlighted line by line.
Lorem Ipsum Generator
Generate placeholder text by word or paragraph count.