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# Encoding tools

Base64 and URL encode/decode — text in, text out, computed entirely in your browser.

- [Base64

Encode and decode, with a URL-safe alphabet option.
](/encoding/base64)
- [URL encoder

Percent-encode components or whole URIs, and back.
](/encoding/url-encoder)
- [Image ⇄ Base64

Image files to data URLs and back — format read from bytes, dimensions decoded, nothing re-encoded.
](/encoding/image-base64)

3 tool s · everything is computed locally, nothing leaves your device.

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Canonical HTML: https://nutter.tools/encoding
Markdown version: https://nutter.tools/encoding/index.md
Plain-text version: https://nutter.tools/encoding/index.txt
Agent index: https://nutter.tools/llms.txt