Developer Utilities
A suite of high-fidelity client-side tools. Format/lint JSON strings, decode client JSON Web Tokens (JWT), and mock Stripe webhook events locally.
JSON Validator & Formatter
Paste your raw JSON string below to format, validate, and debug structures instantly.
JWT Decoder
Decode JSON Web Tokens (JWT) payload structures. Claims are decoded locally in your browser.
Stripe Webhook Mock Schema Generator
Generate mock Stripe event webhook payloads to speed up local endpoint configuration.
How to Use These Developer Tools
This collection of browser-based developer utilities helps web developers, backend engineers, and designers perform common tasks without switching to separate applications or installing extensions.
Each tool on this page is completely standalone and client-side — no data is sent to our servers. You can use the JSON formatter to validate and prettify JSON responses from APIs, the Base64 encoder/decoder to handle binary-to-text encoding for files and auth tokens, and the regex tester to build and test patterns against real input.
The hash generator supports MD5, SHA-1, SHA-256, and SHA-512 — useful for verifying file integrity, testing password hashing, or generating API signatures. The color converter lets you switch between hex, RGB, and HSL color formats instantly.
Bookmark this page as a quick-access developer utility toolkit. All tools work offline once the page is loaded, making them useful even in environments with limited internet connectivity.