Forgebox

Forgebox

Utilities in the browser.

Browser tools that never leave your device. Convert, encode, and calculate without accounts or uploads.

Browse all toolsOpen JSON formatter

Convert

JSON Formatter

Validate, pretty-print, or minify JSON in your browser.

Markdown Preview

Write Markdown and preview HTML instantly — nothing uploaded.

CSV ↔ JSON

Convert CSV to JSON or JSON arrays back to CSV.

Image Compress

Resize and compress images with canvas — files stay local.

Color Converter

Convert between HEX, RGB, and HSL color formats.

Timestamp Converter

Unix seconds/milliseconds ↔ human-readable UTC and local time.

Encode

Base64 Encode / Decode

Encode or decode Base64 text without sending data anywhere.

JWT Decoder

Decode JWT header and payload locally. Does not verify signatures.

Hash Generator

SHA-1, SHA-256, and SHA-512 digests via Web Crypto.

Crypto

AES Encrypt / Decrypt

Password-based AES-256-GCM encryption that never leaves your browser.

HMAC Generator

Create and optionally verify HMAC-SHA256 signatures locally.

Password Generator

Generate strong random passwords with the Web Crypto RNG.

Calculate

Unit Converter

Length, weight, and temperature conversions for everyday use.

Regex Tester

Test JavaScript regular expressions with live match highlighting.

Cron Explainer

Translate a 5-field cron expression into plain English.