Base64 Encoder Decoder — Encode & Decode Base64 Online Free
DeveloperEncode text to Base64 or decode Base64 strings back to plain text. Supports full Unicode including Arabic and Urdu. Free online Base64 encoder and decoder tool.
About the Base64 Encoder Decoder — Encode & Decode Base64 Online Free
Our free Base64 encoder and decoder instantly converts plain text to Base64 encoded strings and decodes Base64 back to readable text. Base64 encoding is widely used in web development for data URIs, API authentication headers, email attachments and JSON payloads. Our tool handles full Unicode including Arabic, Urdu, Chinese, emojis and all special characters. No data is sent to any server — all encoding and decoding happens in your browser.
How to Use the Base64 Encoder Decoder — Encode & Decode Base64 Online Free
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To encode: paste your plain text and click Encode to Base64.
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To decode: paste your Base64 string and click Decode from Base64.
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The result appears in the Output section.
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Click Copy to copy the output to your clipboard.
Frequently Asked Questions
What is Base64 encoding?
Base64 converts binary data or text into a string of ASCII characters using 64 printable characters. It safely transmits data in contexts that only support text, such as email, URLs and JSON.
What is Base64 used for in web development?
Encoding images as data URIs, encoding API credentials in HTTP Basic Authentication headers, encoding binary file content for JSON transmission and storing binary data in text formats.
Is Base64 the same as encryption?
No. Base64 is encoding, not encryption. Anyone can decode a Base64 string. Never use it as a security measure.
What does a Base64 string look like?
'Hello World' encodes to 'SGVsbG8gV29ybGQ='. Strings typically end with one or two = padding characters.