Base64 Encoder Decoder
Convert text to and from Base64 in one click.
What does this Base64 tool actually do?
Base64 turns any text or binary data into a long string of letters, numbers, and a few symbols that travel safely through email, JSON, JWT tokens, and URL parameters. This tool encodes plain text into Base64 and decodes Base64 back into readable text, all in your browser.
Why would you need to encode something in Base64?
Developers and SEOs run into Base64 all the time. Inline images in CSS, signed cookies, JWT tokens, basic auth headers, schema markup with embedded data, and email attachments all rely on it. If you have ever seen a long string ending in equals signs, that is Base64 doing its job.
How do you use the encoder and decoder?
- Paste your input in the box above.
- Click Encode to get a Base64 string from plain text.
- Click Decode to read what is hidden inside a Base64 string.
- Copy your result with one click.
When should you use Base64 instead of URL encoding?
Base64 is for moving any kind of data, including binary content like images and PDFs, through systems that only accept text. URL encoding is lighter and only escapes unsafe URL characters. For embedding small images in HTML or for tokens, Base64 is the right choice.
Got more questions?
Is Base64 a form of encryption?
Why do Base64 strings end with equals signs?
Can I encode emojis or non English text?
Will this work for binary files like images?
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