Base64 Encoder & Decoder
Encode text or files to Base64 format or decode Base64 strings back to their original form. Base64 encoding is commonly used for embedding images in HTML/CSS, transmitting binary data over text-based protocols, and encoding credentials in APIs. All conversion happens instantly in your browser.
Encode File to Base64
Decode Base64 to File
How to Use
- Text Mode: Enter text and click "Encode" to convert to Base64, or paste Base64 and click "Decode" to convert back
- File Mode - Encode: Select a file and click "Encode File" to get its Base64 representation
- File Mode - Decode: Paste a Base64 string, enter a filename, and click "Download File" to save the decoded file
- Use the "Copy" buttons to quickly copy results to your clipboard
Frequently Asked Questions
What is Base64 encoding?
Base64 is an encoding scheme that converts binary data into ASCII text format using 64 printable characters (A-Z, a-z, 0-9, +, /). It's commonly used to embed images in HTML/CSS, encode email attachments, and transmit binary data over text-based protocols.
Why would I need to encode files to Base64?
Base64 encoding is useful for embedding images directly in HTML or CSS (data URIs), transmitting files through JSON APIs, storing binary data in text-based databases, or including attachments in email. It ensures binary data can be safely transmitted through systems that only support text.
Does Base64 encoding compress data?
No, Base64 encoding actually increases file size by approximately 33%. It's not a compression method but an encoding method. The purpose is compatibility and safe transmission, not size reduction.
Is it safe to encode sensitive data?
Base64 is encoding, not encryption. It provides no security and can be easily decoded by anyone. Never use Base64 alone for protecting sensitive data. All processing happens in your browser, so your data never leaves your computer.