Punchbit

Base64 File Encoder

Encode any file to Base64 directly in your browser. Upload documents, images, binaries, or any other file type and get the Base64-encoded output instantly. Useful for embedding files in JSON APIs, data URIs, email attachments, and configuration files.

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Frequently Asked Questions

What file types can I encode?

Any file type — images (PNG, JPG, GIF, SVG), documents (PDF, DOC), code files, binaries, archives (ZIP, TAR), audio, video, and more. The encoder doesn't care about file type — it encodes the raw bytes.

Is there a file size limit?

No hard limit. Since encoding runs in your browser, it depends on your device's available memory. Files up to several hundred MB typically work fine on modern devices.

Are my files safe?

Yes. Files are read and encoded entirely in your browser using the FileReader API. Nothing is uploaded to any server — your files never leave your device.