Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Supports text and file encoding with real-time preview.
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Instantly encode text and files to Base64 or decode Base64 strings back to readable text. This tool is essential for developers, security professionals, and anyone needing to transmit or store data in Base64 format with real-time preview.
How it works
- 1Paste your text or upload a file to encode or decode
- 2Select encode or decode mode based on your needs
- 3View the instant real-time preview of the conversion
- 4Copy the result with one click
Who uses this tool
- ✓Developers embedding images in HTML/CSS and JSON APIs
- ✓Security professionals analyzing encoded malware or data
- ✓System administrators managing authentication tokens
- ✓Web developers integrating file uploads in applications
- ✓Network engineers debugging encoded data packets
Frequently Asked Questions
What is Base64 encoding?
Base64 is a way to represent binary data as ASCII text. It's commonly used to embed images in HTML/CSS, send binary data in JSON, and encode email attachments.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It's easily reversible and provides no security. Don't use it to hide sensitive data.
Can I encode files?
Yes — switch to the File tab to upload any file and get its Base64 representation. Useful for embedding images directly in CSS or HTML.
Why does Base64 output end with == ?
Base64 pads the output with = signs to make the length a multiple of 4. It's part of the standard encoding format.