Developer tools
Base64 encode/decode
Encode text to Base64 and decode Base64 back to text. Note: Base64 is encoding, not encryption.
Anything you type or paste stays in your browser — it is not uploaded to Tools99.
Workspace: 1. Add files2. Ready3. Working4. Done — download
How this workspace works
- Paste text to encode, or Base64 to decode.
- Run the conversion in your browser.
- Copy the result.
Base64 Encode / Decode
Base64 is encoding, not encryption — it does not protect secrets.
Your text never left this browser, so there is no server copy to delete. Copy it again, start over, or continue with a related tool below.
How to use Base64 encode/decode
- Paste text to encode, or Base64 to decode.
- Run the conversion in your browser.
- Copy the result.
A good use for this
Encoding a token, an ID, or a short string for transport in a URL, a header, or a config file.
Limits
Base64 is encoding, not encryption — anyone can decode it instantly. Never use it to hide a password or a secret.