Text vs file mode
Text mode encodes and decodes UTF-8 strings for APIs and config snippets. File mode turns uploads into Base64 (or downloads decoded bytes) when you need Base64-to-file without a server.
Convert text and files to and from Base64 — instantly, in your browser.
Decoded bytes will download with the name you enter.
Processed entirely in your browser — nothing is uploaded anywhere.
Text mode encodes and decodes UTF-8 strings for APIs and config snippets. File mode turns uploads into Base64 (or downloads decoded bytes) when you need Base64-to-file without a server.
Some transports replace + and / and drop padding. This tool sticks to standard Base64 so results match common libraries; adjust for URL-safe variants only if your API requires them.
Encoding happens locally. Useful for tokens, keys, or documents you should not paste into a third-party online converter.