Online Base64 Encoder
Encode text to Base64.
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How to use
- Paste or type your input in the left editor
- Adjust options in the toolbar if available
- Copy or download the output from the right pane
This free online tool runs entirely in your browser. No sign‑up, no server uploads.
About Base64 Encode
Encode text to Base64.
Use the left editor to enter your data. The output updates in real time. You can copy, clear, download, or expand either pane.
Use this developer utility for everyday tasks like debugging, formatting, validation, and conversion. It’s a privacy‑friendly JavaScript tool that can work offline after the first load.
Tip: Use the search bar to quickly switch between tools.
Sample text
Hello, 世界
Example input shown above. Output appears in the right pane instantly.
Why this tool?
| Feature | Base64 Encode | Typical alternatives |
|---|---|---|
| Free online tool | Yes | Often yes |
| Client‑side only (privacy) | Yes | Varies |
| No sign‑up required | Yes | Varies |
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FAQs
What is Base64 Encode?
Base64 Encode is a free, browser‑based tool. Your data never leaves your device.
How do I use Base64 Encode?
Paste or type in the left editor. The right pane updates instantly. Use the toolbar to open, save, copy, clear, and go fullscreen.
Can you show an example?
Base64 encodes binary data or text into ASCII characters; decoding reverses the process.
Are my files uploaded to a server?
No. Processing happens locally in your browser (client‑side only).
What are the limits?
Large inputs work best in modern desktop browsers. For very large files, consider splitting input or using Web Workers in a desktop environment.
What shortcuts are supported?
Use Ctrl/Cmd+F for Find, Ctrl/Cmd+C to copy, Ctrl/Cmd+V to paste. The toolbar also exposes these actions.
How can I share the result?
Click copy to clipboard or save to download a file. You can also share the page URL.
Is Base64 Encode really free?
Yes. Base64 Encode is a free online tool for developers and runs without sign‑up.
Who uses this tool?
Developers, QA engineers, students, and data analysts use this developer utility for daily tasks.