Developer Tools

Development work is full of ten-second problems — format this JSON, decode that token, build a cron expression, convert CSV to JSON for a test fixture. Installing a package or script for each one is overhead; searching online risks pasting secrets into someone else's logger. These seventeen tools solve the short problems locally, in the browser, with nothing sent anywhere.

JSON and data shaping: JSON Formatter validates and pretty-prints the moment you paste — the fastest way to find the missing comma. The converter family moves data between shapes: JSON to CSV, CSV to JSON, JSON to YAML, and XML to JSON for config files and test data.

Encoding, hashing, tokens: Base64 encodes and decodes payloads, Hash Generator produces MD5/SHA checksums for file verification, JWT Decoder unpacks token header and claims so you can see expiry and scopes without a library, and URL Encoder handles query-string escaping. UUID Generator and Address Generator create test fixtures in bulk.

Patterns and time: Regex Tester shows matches live as you type — the only sane way to write a complex pattern. Cron Generator translates human schedules into cron syntax and explains each field. Timestamp Converter moves between epoch numbers and readable dates across timezones. HTML Encoder, Minifier, Code Beautifier, and Color Converter round out the daily toolkit.

Practical tips: paste production JSON into the formatter before diffing — most "bugs" are formatting. Decode JWTs to check expiry before blaming the backend. And because every tool here runs client-side, it is safe to use them with realistic data; nothing you paste leaves the browser.