Base64 Decode
Decode from Base64
How to Use
- 1Paste your Base64 encoded string in the input field
- 2Click the Decode button to convert back to original
- 3View the decoded result in the output field
- 4Choose output format (text, hex, or download)
- 5Copy or download the decoded data
Features
Use Cases
- Extracting embedded images from HTML/CSS
- Debugging API responses with Base64 data
- Recovering original data from encoded strings
- Analyzing email attachments
- Inspecting JWT token payloads
- Reverse engineering data formats
Tips
- Check for padding characters (=) at the end
- Remove whitespace and line breaks before decoding
- Verify the character set if text appears corrupted
- Use hex view for binary data inspection
- Validate Base64 format to avoid errors
Detailed Guide
Base64 decoding reverses the Base64 encoding process, converting encoded strings back to their original binary or text format. This tool is invaluable for developers debugging API responses, analyzing encoded data, or extracting embedded resources from web pages. It handles various Base64 variants and can reconstruct both text and binary files. Always verify the output format and character encoding for accurate results.
Frequently Asked Questions
Why is my decoded text gibberish?
The original data might be binary or use a different character encoding. Try viewing as hex or downloading as a file.
Can I decode partial Base64?
Partial or corrupted Base64 may not decode properly. The tool will attempt to decode what it can, but results may be incomplete.
How do I know if it's Base64?
Base64 uses only A-Z, a-z, 0-9, +, /, and = characters. The tool validates the format before decoding.