When Base64 is useful
Base64 shows up whenever a system wants text but the original content is really bytes or structured data.
You'll run into it in headers, inline assets, data URLs, and random encoded blobs inside payloads.
Quick Switch
Tool navigation
Browser-based tool
Base64 Encode / Decode
Encode UTF-8 text into Base64 or decode Base64 back into readable text.
FAQ
Is this Base64 tool free?
Yes.
Can it handle Unicode text?
Yes. The tool encodes and decodes UTF-8 text instead of assuming ASCII only.
Is my input uploaded?
No. Encoding and decoding happen locally.
Why does decoded text look broken?
The input may not be valid Base64, or it may represent binary data instead of readable text.
How To Use It
What Base64 does not do
Base64 is encoding, not encryption. If someone has the string, they can decode it.
So if a secret is only Base64-encoded, it's still basically just plain text.
Related Tools
Related Tutorials
Base64 Encoding: A Comprehensive Developer Guide with Examples
Learn how Base64 works, when to use it, common pitfalls, and the crucial difference between Base64 and Base64URL with practical examples.
Common Encoding Mistakes and How to Fix Them: A Developer's Guide
Avoid these encoding pitfalls: double encoding, URL encoding, UTF-8 issues, HTML entities, Base64 confusion, and more with real-world examples.
Good to know
Runs in your browser
Paste your input at the top and the result shows up right below. The FAQ and related tutorials are there if you want more.
- Most tools run entirely in your browser.
- Your input isn't sent to a server unless a tool says it makes a network request.
- Related tools and tutorials sit below when a task usually needs a follow-up.