Encode and decode Base64 for text, files, and images - useful for embedding in JSON, data URIs, JWT, and email attachments. UTF-8 text and files supported.
Who Uses Base64 Encoder / Decoder
Developers embedding a small icon directly into CSS or HTML to save a request. Anyone decoding a Base64 string out of a log, an API payload or a config file to see what it holds. Engineers encoding credentials for a Basic Auth header while testing. People moving binary data through a channel that only carries text.
Base64 Encoder / Decoder Features
- Instant Conversion: Encode and decode Base64 strings in real-time
- Two-Way Conversion: Easily switch between encoding and decoding with one click
- File Support: Encode files and images to Base64 data URIs for embedding
- 100% Private: All processing happens in your browser - nothing is uploaded
How to Use Base64 Encoder / Decoder
Encode or decode Base64 in three steps
- Enter or Upload: Paste text or upload a file to encode, or paste Base64 to decode
- Convert: Click Encode or Decode to instantly transform your data
- Copy Result: Copy the result to clipboard or download as a file
Frequently Asked Questions
What is Base64 encoding?
Base64 is a method of encoding binary data into ASCII text. It's commonly used in emails, data URLs, and API authentication.
Is the Base64 tool free?
Yes, encode and decode unlimited text and files (up to 5MB) with no signup. Two-way conversion, data URI generation, and Unicode support are all included free.
Can I encode files?
Yes, you can upload files up to 5MB and get their Base64 data URI representation.
Is my data safe?
Yes, everything is processed entirely in your browser. No data is sent to any server.
Does it support Unicode text?
Yes, our encoder properly handles Unicode characters including emojis and non-Latin scripts.
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