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Base64 Encoder / Decoder

Encode and decode Base64 for text and files, with full Unicode support.

FreeNo loginBrowser basedPrivacy friendly
By MerQPrime Editorial TeamUpdated 2026-06-20Reviewed 2026-06-20Editorial policy
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Overview

About the Base64 Encoder / Decoder

Convert text and files to and from Base64 instantly. Encode binary or Unicode text for safe transport in URLs, JSON or data URIs, then decode it back whenever you need — entirely within your browser.

Benefits

How it works

  1. 1Choose Encode or Decode.
  2. 2Paste your text, or select a file to convert to a Base64 data string.
  3. 3The result is produced instantly with full UTF-8 support.
  4. 4Copy the output or download it as needed.

Applications

Use cases

  • Embed images and fonts directly in CSS or HTML as data URIs.
  • Encode credentials for HTTP Basic Authorization headers.
  • Transport binary data safely inside JSON or XML.
  • Inspect and decode JWT segments and API payloads.

Support

Frequently asked questions

Does Base64 encrypt my data?
No. Base64 is an encoding, not encryption. It makes binary data text-safe but provides no security — anyone can decode it.
Does it handle Unicode and emoji?
Yes. Text is encoded as UTF-8 first, so accented characters, non-Latin scripts and emoji all encode and decode correctly.
Can I encode files?
Yes. Select any file and it will be converted to a Base64 string in your browser. Files are processed in memory and never uploaded.

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Related tools, guides & pages

Base64 Encoder & Decoder — Text & Files | MerQPrime Tools