Browser-first developer tools
Your data stays in the browser.
devswiss.tools gives you UUID, Base64, XML, hash, and cron utilities without sending inputs to a server.
Core Utilities
Available developer tools
Generate UUIDs, encode Base64 text, format XML, create hashes, and build cron expressions directly in the browser.
UUID Generator & Validator
Generate UUID versions 1, 3, 4, 5, and 7 or validate a pasted UUID instantly.
Base64 Encoder & Decoder
Encode plain text or decode Base64 safely, including Unicode content.
Hash Generator
Create MD5, SHA-1, SHA-256, and SHA-512 hashes entirely in the browser.
Bcrypt Hash Generator
Generate salted bcrypt password hashes locally with adjustable rounds from 1 through 20.
Cron Expression Generator
Build 5-field or 6-field cron expressions and read them as plain language.
XML Formatter
Beautify XML, minify it, convert it to JSON, and move files in or out locally.