Developer tools
Everyday utilities, ad-free and local
The small tools a working developer reaches for several times a day: encode a string, plan a subnet, generate identifiers. They run locally, keep no history, and carry no advertising at all — because pasting a token or a config fragment into an ad-funded page is a bad habit the industry should not encourage.
What people use these for
- Encode or decode Base64, URL and HTML entities, including emoji and Indian scripts
- Plan IPv4 or IPv6 subnets and check the usable host range
- Generate UUIDs, ULIDs or NanoIDs in bulk
- Look up an HTTP status code or an ASCII value without leaving the tab