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Base64 Encode/Decode
Quickly encode and decode strings or files to and from Base64 format.
Tool Guide
What is Base64 Encode/Decode?
Quickly encode and decode strings or files to and from Base64 format.
How to use?
- Input Content: Enter normal strings or upload small files/images.
- Encode/Decode: Click the button to instantly perform Base64 operations.
- Get Result: Copy the resulting Base64 string or the restored raw data.
Use Cases
Inline Web Assets
Convert small icons into Base64 to hardcode into CSS, reducing HTTP requests.
Limits and data handling
- Base64 is encoding, not encryption, and can be reversed by anyone.
- Very long text or large files create much larger results and are less convenient to copy.
- Incomplete input may produce a corrupted or unreadable decoded result.
Content is encoded or decoded in the current browser and is not uploaded because you use this tool.
Frequently asked questions
Does Base64 protect a password?
No. Base64 is reversible encoding and cannot replace password encryption.
Why is the decoded text garbled?
The encoded value may be incomplete, use a different character set, or not be valid Base64.
Is it suitable for large files?
It is best for small text, icons, and configuration snippets because large files produce much longer values.