Base64 Encoder Without Upload — Encode/Decode Instantly
Base64 encoding is used to represent binary data in ASCII format, commonly for embedding images in CSS, encoding email attachments, or passing binary data in JSON. This encoder and decoder runs entirely in JavaScript in your browser — no data is ever sent to a server.
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Base64 encoding and decoding happen in your browser with JavaScript — your data is never transmitted.
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Base64 Encoder / Decoder →
Free · No upload · No account required
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Frequently Asked Questions
- What can I encode with Base64?
- Text strings are the primary input. For encoding binary files (images, PDFs), use the Base64 Image Encoder tool.
- Is Base64 encryption?
- No. Base64 is an encoding scheme, not encryption. Encoded data can be decoded by anyone without a key.