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Base64 Image Converter

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Convert verified images to Base64 data URLs or decode Base64 back to downloadable image files.

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Upload an image or load Examples to create a Base64 data URL.

Convert PNG, JPEG, GIF, WebP, or browser-decodable SVG images into full Base64 data URLs, or decode Base64 image data back into a downloadable file. The tool checks the actual file bytes instead of guessing every raw Base64 string is PNG, rejects non-image data with a visible error, and keeps the decoded/original bytes for download.

See more about the Base64 Image Converter

Useful for embedding a small image in CSS or email HTML, checking the real format behind a raw Base64 blob, or recovering an image file from a data URL copied out of page source.

Key features

  • Raw image format detection
  • Visible invalid-image errors
  • Copy and download output
  • Base64 size overhead shown

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Quick answers for Base64 Image Converter

Does it show me a preview of the image, or just the raw text?
Both. The tool only shows output after the browser can decode the image and report real dimensions. Bad Base64, non-image bytes, MIME mismatches, and broken images show an inline error instead of a stale preview.
What image formats can I encode or decode?
PNG, JPEG, GIF, WebP, and browser-decodable SVG. For raw Base64 without a data URL prefix, it inspects the bytes and uses the detected image type instead of assuming PNG.
Can I download the decoded image?
Yes. Decode mode keeps the original decoded bytes and downloads them with the matching extension. Encode mode also offers the uploaded image bytes for download. Base64 is encoding, not compression, so the text is usually larger than the image file.