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PrivateProcessed LocallyNo Uploads
All processing happens in your browser No data is stored or sent to any server
Base64 Encoder & Decoder
Encode, decode, inspect, and copy Base64 or Base64URL values in a focused browser-only workspace.
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Frequently asked questions
Is Base64 a form of encryption?
No. Base64 is encoding, not encryption. Anyone who receives a Base64 string can decode it instantly with no key or password required.
Why do developers and testers use Base64?
It makes binary or structured values safe to move through text-only systems such as HTTP headers, JSON payloads, email, and logs.
What is the difference between Base64 and Base64URL?
Base64URL replaces + with - and / with _, and often omits padding. It is commonly used in URLs and JWT tokens because the output is safer inside links.
Does this tool upload my input?
No. Encoding, decoding, copying, and image preview detection run in your browser.