Three straightforward steps
- Choose or paste the input requested by this tool.
- Configure the options and run the operation locally.
- Review and download or copy the result.
Developer TOOL
Base64 Text Encoder
Encode UTF-8 text to Base64 or decode Base64 back to Unicode text.
ON-DEVICESelected input is processed in this browser.
Loading tool…
The selected input stays under your control
On-device processing means the input is handled by browser APIs on the device running this page. Closing or refreshing the page normally clears the active in-memory working session.
Read the Privacy Policy →Encode Unicode text to Base64 and back
Convert UTF-8 text safely without mistaking the result for secrecy.
How to use it
- Paste text or Base64 input.
- Choose encode or decode.
- Verify Unicode characters and copy the output.
Supported input
- UTF-8 Unicode text
- Valid Base64 representing UTF-8 bytes
Worked example
Encode a short multilingual test string for a development fixture, then decode it to confirm round-trip accuracy.
Limitations
- Base64 provides no confidentiality.
- Arbitrary binary data may not decode as readable UTF-8.
Troubleshooting
- Remove accidental surrounding quotes.
- Use Image to Base64 for image files rather than text decoding.
Tool-specific questions
Does Base64 protect passwords?
No. Use established encryption or hashing for the correct security goal.
Why are emoji supported?
The tool converts Unicode text through UTF-8 bytes before Base64 encoding.
Before you process
Can I use this base64 text encoder online without uploading my input?
Yes. This tool is labelled On-device, so the selected input is processed in your browser and is not sent to a ForgeMyFile processing API.
What happens if the browser cannot process it?
The tool shows a readable error and stops. It does not silently fall back to a cloud upload.
Why can performance differ between devices?
The browser is doing the work locally, so speed and practical file size depend on available memory, CPU and browser capabilities.