Free Base64 Encoder/Decoder
Encode any text to Base64 format or decode Base64 strings back to readable text. Free, fast, and works entirely in your browser with no sign-up required.
Base64 Encoder / Decoder
Encode text, files, and images to Base64 or decode Base64 back. Supports URL-safe encoding, MIME line wrapping, data URIs, batch processing, and more.
Input
Drop any file here or click to browse
Supports images, PDFs, binaries, and more
Base64 Output
Output will appear here
Standard Base64
Uses A–Z, a–z, 0–9, +, /. Padded with =. Default for MIME, email, and most APIs.
URL-Safe Base64
Replaces +→- and /→_, no = padding. Safe in URLs, filenames, and JWT tokens.
Data URIs
Format: data:[mime];base64,[data]. Embeds files directly in HTML/CSS without extra HTTP requests.
Frequently Asked Questions
What is the Base64 Encoder/Decoder?
The Base64 Encoder/Decoder is a free online tool that encodes text to Base64 format and decodes Base64 strings back to readable text.
Is the Base64 Encoder/Decoder free?
Yes, it is completely free with no registration required. All encoding and decoding happens client-side in your browser.
What is Base64 used for?
Base64 encoding is used to safely transmit binary data as text in emails, URLs, APIs, and data URIs for embedding images in HTML/CSS.
Is my data safe with this tool?
Absolutely. The Base64 Encoder/Decoder processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the Base64 Encoder/Decoder work on mobile devices?
Yes, the Base64 Encoder/Decoder is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the Base64 Encoder/Decoder in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the Base64 Encoder/Decoder?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The Base64 Encoder/Decoder works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free Base64 Encoder/Decoder
Free Base64 Encoder/Decoder is a free, browser-based tool in our Utility Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.