Base64 Encoder & Decoder
Or upload a file
Click to select a file or drop it here
Encode mode: feed text or any file and receive a Base64 string.
Decode mode: paste Base64 to preview text or save it back as a file.
Everything runs inside the browser which is perfect for sensitive data.
For huge payloads use a modern browser to avoid blocking the UI.
What is Base64 Converter
Encode text to Base64 and decode Base64 back to readable text — handy for API payloads, data URIs, auth headers and debugging. UTF-8 is handled correctly for non-ASCII input, a sample fill button shows the expected format, and processing is local to the browser.
How to use Base64 Converter
- Paste the text or Base64 string
- Choose encode or decode
- Copy or download the result
Frequently asked questions
Does it handle UTF-8 and non-ASCII text?
Yes — input is encoded as UTF-8 first, so accented characters and CJK text round-trip correctly.
Can I encode a file?
Yes — select a file to get its Base64 string, useful for embedding small assets or building data URIs.
Is Base64 a form of encryption?
No — it is only an encoding and anyone can decode it. Never use it to protect secrets; use real encryption for sensitive data.
Is Base64 Converter free?
Base64 Converter is completely free — open the page and use every feature with no hidden charges.
Do I need to download or install Base64 Converter?
No download or installation is needed. It is an online tool that runs in the browser on your phone, tablet and computer.
Do I need an account to use Base64 Converter?
No. Use the tool right away — no account or sign-in required.
Does Base64 Converter work on mobile?
Yes. The page is fully responsive and works on phones, tablets and desktop browsers.