What is Base64 Decode?
Base64 decode is the process of converting Base64-encoded data back to its original text or binary form. This tool is useful for reading email attachments, data URIs, and other Base64-encoded content.
Use Cases for Base64 Decode
- Reading and downloading email attachments
- Extracting images and files from data URIs
- Decoding encoded API responses
- Inspecting JWT token contents
- Reading encoded log files
- Data analysis and web scraping tasks
Features of Base64 Decode
- Instant Processing: Real-time decoding
- Error Detection: Automatically detects invalid Base64 format
- Large Data Support: Can handle long Base64 strings
- Easy Copying: Copy results with a single click
- Mobile-Friendly: Works seamlessly on all devices
How to Use Base64 Decode
- Paste the Base64-encoded text you want to decode into the input field above
- Click the "Decode from Base64" button
- The decoded original text will appear automatically
- Copy the result for further use if needed
Common Base64 Errors
You may encounter the following errors during Base64 decoding:
- Invalid Characters: Base64 only includes A-Z, a-z, 0-9, +, /, and =
- Padding Error: Base64 string must end correctly with "=" characters
- Corrupted Data: Missing or extra characters can prevent decoding
Base64 vs Other Encoding Methods
Compared to URL encoding, Hex encoding, and other methods, Base64 increases size by ~33% but provides broader character support. Use URL encoding for safe URL data transfer, and Hex encoding for low-level binary operations.