Dev Toolbox provides quick offline access to various development tools.
Current tool set:
1. Calculate hashes
2. Encode and decode HTML, URI, Base64
3. Convert number between different bases
4. Parse and manipulate various time formats
5. Format and inspect IPv4/CIDR addresses
6. Search all v13.1 emoji with quick copying
Runs entirely offline, and only requires local storage permission to remember the last tool used and its input.