Base64 to Image Converter
Paste an image data URL or raw Base64 text, preview the decoded image, and download the original binary file without sending the data to a server.
Decoded image
Podgląd obrazu
Private local decoding
Your data stays in your browser. ImageConver decodes the Base64 string locally and does not send it to a conversion server.
Raw Base64 or data URL
Paste a complete data URL with its MIME type, or choose the image type manually when you only have the encoded string.
Preview before download
Validate that the string contains a real image, check its dimensions and decoded size, then save the binary file.
Jak to działa
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1
Paste Base64
Enter a complete image data URL or a raw Base64 string copied from code, JSON, CSS, or an API response.
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2
Choose the type
For raw strings, select PNG, JPG, WebP, GIF, or SVG so the browser can interpret the bytes.
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3
Decode and download
Preview the image and download the reconstructed file with the correct extension.
Base64 image data explained
A data URL starts with a media type such as data:image/png;base64, followed by encoded bytes. Raw Base64 omits that prefix, so the image type must be supplied separately.
Base64 is useful inside source files and API payloads, but it is about one-third larger than the original binary data. For ordinary web pages, separate optimized image files are often easier to cache and maintain.
Często zadawane pytania
Can I paste a complete data URL?
Yes. The converter detects the MIME type and Base64 content in standard image data URLs automatically.
Why is my Base64 image invalid?
The string may be truncated, URL-encoded, use a non-Base64 representation, or contain bytes that do not match the selected image type.
Does decoding Base64 reduce image quality?
No. Base64 is an encoding of the original bytes. Decoding reconstructs those bytes without recompressing the image.
Base64 to Image last reviewed: Jun 11, 2026.