Base64URL Encoder / Decoder
Convert text to URL-safe Base64URL strings or decode them back.
Runs entirely in your browser — your data is never uploaded to any server.
How it works
- Input data for Base64URL Encoder / DecoderPaste or enter content for Base64URL Encoder / Decoder.
- Process dataExecutes instantly inside your browser.
- Copy outputCopy or download the processed output.
What this tool does
- Fast Base64URL Encoder / Decoder processing
- 100% browser-based execution
- Zero data transmission or server logging
Frequently Asked Questions
Yes. All processing executes 100% locally in your browser. Nothing is uploaded to any server.
Privacy and security
Your input is processed by JavaScript running inside your browser. Nothing you paste is sent over the network, logged, or stored — which is what makes this safe to use with production data. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.