🔒 100% client-side — no uploads, no tracking

Free Developer Tools

Fast, private utilities for everyday development. JSON, Base64, URL encode, hash, regex, timestamp, and CSV conversions — everything runs locally in your browser.

Tip: use Ctrl + K to jump between tools. Built by ovannesovannisian-coder · more tools & services

🧩 JSON Formatter & Validator

Paste JSON to format, minify, and validate with error location.

Input JSON

Output will appear here.

🔐 Base64 Encode / Decode

UTF-8 safe Base64 with error handling.

Text / Base64

🔗 URL Encode / Decode

Percent-encoding for URLs and query strings.

Text / URL

#️⃣ Hash Generator

SubtleCrypto — SHA-1 / SHA-256 / SHA-384 / SHA-512 (client-side).

Input text

MD5 is intentionally omitted (insecure). Use SHA-256.

🧪 Regex Tester

JavaScript RegExp with flags and live match highlighting.

Pattern

Test text

⏱️ Timestamp Converter

Unix ↔ ISO ↔ Local. Supports seconds and milliseconds.

Unix timestamp or ISO date

🔄 CSV ⇄ JSON

Simple delimiter-aware converter (comma, semicolon, tab).

Delimiter Input (CSV or JSON array)

🎫 JWT Decoder

Decode header & payload (no signature verification — client-side only).

JWT token

Never paste secrets. Verification requires your secret on a server.

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