- In your browserProcessing stays on your device—no server upload.
- FreeEvery tool is available without sign-up or subscription.
- PrivateJSON, tokens, and secrets never leave the tab.
All tools
- JSONEdit, format, and explore structured data as a tree.Editor · Viewer
- HTMLMarkup editor with a live page preview.Viewer
- JWTDecode tokens and verify HMAC signatures.JWT
- EncryptionMD5, SHA-1/256/512, and Base64 for text.MD5 · SHA-1 · SHA-256 · SHA-512 · Base64
- URLEncode and decode URLs and query parameters.URL codec
- TimeConvert Unix timestamps to dates and back.Unix time