Deterministic developer tools, entirely in your browser
Nine focused workspaces for formatting, inspection, conversion, and generation — with no server uploads and no AI.
9 tools
Start the task you need
Time Toolkit
Timezone conversion, Unix timestamps, date calculation, and cron parsing with deterministic local code—no uploads or AI
Data Toolkit
Format JSON, convert JSON↔YAML, extract fields, and compare text locally—no uploads or AI
API Request Toolkit
Build cURL commands and encode or decode URL components with deterministic local code—no uploads or AI
Log Toolkit
Format logs, count patterns, clean stack traces, and mask sensitive data locally—no uploads or AI
Regex Tester
Test JavaScript regular expressions with exact ranges and capture groups locally—no uploads or AI
SQL Formatter
Format multi-dialect SQL with deterministic browser code—no uploads or AI
JWT Decoder
Decode and inspect JSON Web Tokens locally without uploads or AI; signatures are never treated as verified
Local Media Lab
Convert images and generate QR codes with deterministic browser code—no uploads or AI
Encoding Toolkit
Base64, HTML entities, number bases, hashes, UUIDs, and text case with deterministic local code—no uploads or AI