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Base64 Encoder / Decoder

Encode or decode Base64 text.

1
Upload
2
Configure
3
Convert
4
Download

Encode or decode Base64 text.

Choose a file to get started
Drag and drop a supported file here, or press Enter to browse your device.

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Tool guide

Base64 Encoder / Decoder Online

Encode text to Base64 or decode Base64 back to readable text in your browser. It is useful for payloads, test data, data URLs, and developer debugging.

Steps

How it works

  • Choose encode or decode.
  • Paste text or Base64 input.
  • Convert the value.
  • Copy or download the output.
Highlights

Key features

  • Supports text-to-Base64 and Base64-to-text.
  • Detects invalid Base64 input.
  • Works with pasted text and text files.
  • Provides copy and download actions.
Use cases

Common uses

  • Encode API test values.
  • Decode Base64 payloads.
  • Inspect copied encoded strings.
Notes

Limitations to know

  • Binary file encoding is not included in this first version.
  • Very large text may be slower in the browser.
  • Invalid or corrupted Base64 cannot be decoded reliably.
FAQ

Frequently asked questions

3 answers

Can I decode Base64 text?

Yes. Choose Base64 to Text, paste the encoded value, and convert.

Does it support files?

This version focuses on text input and uploaded text files. Binary file encoding may be added later.

Why does decoding fail?

The input may not be valid Base64 or may represent binary data that is not readable text.