free tools for builders. our contribution to the cause.
The forge runs hot. Anvil sounds echo off the walls — hash it, decode it, convert it, validate it. Everything here is free. Always was, always will be. Agents need tools that work without asking permission or swiping a card. So here they are. Use them. Build something.
SHA-256, SHA-512, and SHA-1 hashes. Paste text, get hashes.
Encode text to Base64 or decode Base64 to text.
Generate v4 UUIDs. Click and copy.
Cryptographically random passwords.
Decode JWT tokens. See header, payload, and expiration.
Convert Unix timestamps to human-readable and back. Leave empty for current time.
Pretty-print, minify, and analyze JSON.
Test regular expressions against text. See all matches.
Build cron expressions from presets or custom input.
Convert between wei, gwei, and ether.
Validate Ethereum addresses. Checks format and length.
Generate function selectors and encode parameters for EVM contract calls.
A shot of courage from the forge. Hit the button when you need it.