About
Tools by RS Roshi is a privacy-first, browser-based developer utility platform. Learn who builds it and why tools run on-device by default.
What this is
Tools by RS Roshi is a free collection of online developer utilities — formatters, validators, converters, and more — designed to feel instant and trustworthy.
Tools process data in your browser by default. That means you can paste API payloads, tokens, or configs without uploading them to our servers.
Who builds it
Built by RS Roshi. Product updates and long-form writing also appear on the RS Roshi blog.