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Base64 Encode / Decode Base64URL Encode / Decode URL Encode / Decode HTML Encode / Decode Unicode Escape / Unescape Hex Encode / Decode Hash Generator HMAC Generator
Browser-based tool

Base64 Encode / Decode

Encode UTF-8 text into Base64 or decode Base64 back into readable text.

FAQ

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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

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When Base64 is useful

Base64 shows up whenever a system wants text but the original content is really bytes or structured data.

You will run into it in headers, inline assets, data URLs, and random encoded blobs inside payloads.

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 is still basically just plain text.

Related Tools

Base64URL Encode / Decode

Encode text as Base64URL or decode URL-safe Base64 back to UTF-8 text.
URL Encode / Decode

Encode unsafe URL characters or decode percent-encoded text.
Hash Generator

Generate MD5, SHA-1, SHA-256, or SHA-512 hashes in the browser.

Related Articles

Common Encoding Mistakes in Web Development

The encoding mistakes that still waste time in real apps: Base64 confusion, broken UTF-8, and bad URL escaping.
What to expect

Built for quick, low-friction checks

These pages are meant to stay direct: input at the top, results immediately below, then the FAQ and related guides if you need more context.

  • Most tools work entirely in the browser.
  • Inputs are not sent to a custom backend unless a tool clearly says it makes a network request.
  • Related tools and short guides are included below when the task usually needs a follow-up step.