Free developer tool
Base64 Encoder / Decoder
Convert text or files to Base64, or decode a Base64 string back to text. All conversion happens locally in your browser — nothing is uploaded.
Encode / decode Base64
100% local — your text and files never leave your device.
Frequently asked questions
What is Base64 used for?
Encoding binary data (like images or files) as plain text, commonly used in data URLs, email attachments, and API payloads.
Can I encode a whole file, not just text?
Yes — use "Encode a file" below to get the Base64 representation of any file, entirely on your device.
Doing this by hand every week? That's exactly what I remove.
If this conversion is one small step in a bigger workflow — say, files arriving by email, getting converted, renamed and filed by a person every time — I build software that does the whole thing automatically. My clients get back up to 18 hours a week this way.
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