Is the text to base64 encoder private?
Yes. Text is converted to UTF-8 bytes before encoding, which avoids the Unicode errors caused by using btoa directly. All processing happens locally in your browser — nothing is uploaded to our servers.
Text to Base64 Encoder
Encode UTF-8 text, Unicode, emoji, JSON, XML, or source code to standard Base64 in your browser.
Runs locally in your browser
How to use it
- Paste your input or choose a file from this device.
- Run the conversion and review the detected type or preview.
- Copy the result or download it for your project.
Built for UTF-8 text
Text is converted to UTF-8 bytes before encoding, which avoids the Unicode errors caused by using btoa directly.
No registration, watermark, queue, or server upload is required.
Use Base64 wisely
Base64 is ideal for text-only APIs, small embedded assets, test fixtures, and portable documents. It increases payload size, so external files are usually better for large public assets.
Frequently asked questions
Does this handle emoji and non-Latin characters?
Yes. Text is encoded as UTF-8 bytes first, so Unicode, emoji, CJK characters, and symbols are supported.
Why not use btoa() directly in JavaScript?
btoa only handles Latin1 characters. Converting to UTF-8 bytes first avoids errors with international text.
When should I use Base64 for UTF-8 text?
Use it when a text-only channel or API must carry binary data, or when a small UTF-8 text asset needs to live inside a self-contained document. Prefer separate files for large, cacheable public assets.