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Base64 Encoder & Decoder

Encode UTF-8 text to Base64 or decode standard and URL-safe Base64 with instant validation.

Standard and Base64URLNo data storedUTF-8 safe

Plain Text

Paste or type the value to convert

26 bytes

Base64 Output

Converted result, ready to export

36 bytes
SGVsbG8gZnJvbSBTbWFydFRvb2xzTmVzdCE=

Text encoded successfully.

Conversion Ready

Technical Specs

Maximum Size
1 MB
Variants
Standard + URL Safe
Text Encoding
UTF-8
Privacy
No database storage

Important

Base64 is encoding, not encryption

Base64 represents binary data as portable text. Anyone can reverse it, so it must never be used by itself to protect passwords, authentication tokens, personal information, or application secrets.

What is Base64 Encoder & Decoder?

Base64 Encoder and Decoder converts text or binary data into the Base64 representation used in data URLs, email bodies, and development workflows, and converts valid Base64 back again. It is an encoding utility, not an encryption tool. The readable output also helps diagnose character-set, padding, and URL-safe alphabet differences during integration testing.

How to use Base64 Encoder & Decoder

  1. 1.Choose Encode or Decode and select text or file input.
  2. 2.Paste the value or choose the file to process.
  3. 3.Run the conversion and inspect the output for the expected character encoding or MIME type.
  4. 4.Copy the text result or download reconstructed file data.

Key features

  • ✓Supports ordinary Base64 and URL-safe Base64 workflows.
  • ✓UTF-8 handling preserves common international text during round trips.
  • ✓File mode creates or reads encoded binary content without a manual script.
  • ✓Validation reports malformed padding or invalid alphabet characters.

Common use cases

  • Inspect an encoded API field during debugging.
  • Build a small data URL for a development fixture.
  • Decode a certificate snippet or email payload you are authorized to inspect.
  • Convert test bytes into a transport-safe string.

Frequently asked questions

Is Base64 the same as encryption?

No. Anyone can decode Base64; it provides a transport representation and no confidentiality.

Why does Base64 output end with equals signs?

The equals signs are padding used to complete fixed-size encoding groups. Some URL-safe systems omit padding by agreement.

Can Base64 encode an image?

Yes. File bytes can be encoded, but the result is usually about one-third larger and should not replace normal image hosting for large files.

What is Base64URL?

It is a URL- and filename-friendly variant that replaces plus and slash characters and may omit padding. JWT segments commonly use it.

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