About
CrankDev is a collection of 57 free browser-based developer tools for formatting, converting, encoding, and debugging. No account, no server upload, no signup.
57 tools
Formatters, converters, validators, encoders, generators, and debugging utilities.
Privacy first
Everything runs in your browser. Nothing you paste leaves your device.
Instant results
No signup, no loading spinners, no server round-trips. Paste in, get result out.
Open source libraries
Built on trusted tools like js-beautify, Turndown, Luxon, YAML, and css-tree.
Works everywhere
Desktop, tablet, or phone. Light and dark mode. No install required.
What you can do here
- Format JSON, CSS, HTML, SQL, and JavaScript
- Convert between JSON, YAML, CSV, XML, HTML, and Markdown
- Encode and decode Base64, URL encoding, HTML entities, Morse code
- Generate UUIDs, JWT tokens, bcrypt hashes, QR codes, and mock data
- Validate cron expressions, CSS, YAML, HTML, and JSON
- Compare text, test regex, inspect user agents and timestamps
Questions? Get in touch.