Coding utilities for your daily workflow
From JSON beautifying to regex testing, cron building and JWT inspection — every everyday developer utility you need, running privately in your browser.
Developer tools help you format code, validate data, encode and decode strings, test patterns, and inspect tokens — all without installing anything. Whether you are debugging a JSON payload, checking a JWT expiry, or building a cron expression, these utilities give you instant answers in the browser. Every tool processes your input locally, so credentials, API keys and proprietary code never leave your machine. Developers use them during code reviews, CI/CD debugging, API testing, and daily scripting tasks.
Every tool below is free, runs instantly in your browser, and never uploads your data.
Format, minify and validate JSON with syntax error details and document stats.
Convert CSV to JSON and JSON to CSV with delimiter and quote support.
Test regular expressions with live match highlighting, groups and flags.
Encode text or files to Base64 with URL-safe and Unicode support.
Decode Base64 strings back to text or files with Unicode support.
Percent-encode URL strings for query parameters and paths.
Yes — every tool in this category runs 100% in your browser. Paste tokens, JSON payloads and code freely; nothing is ever uploaded.
No. All 16 developer tools are free, instant, and require no signup or API keys.
Yes — all tools are fully responsive and work in any modern browser on desktop, tablet, or phone.