Decoding Base64 Images

Paste a base64 string or complete data URL and this decoder displays the image immediately in your browser. It supports common browser image formats including PNG, JPEG, GIF, WebP, SVG, and BMP.

Data URL Format

Data URLs follow data:[MIME-type];base64,[encoded-data]. A complete data URL gives the decoder the best MIME type information.

Image Preview and Download

After decoding, the image appears in the preview area and can be downloaded with an automatically generated filename.

Troubleshooting Invalid Base64

Invalid characters, bad padding, malformed data URLs, or unsupported image formats can prevent decoding. Remove extra whitespace and verify the data URL prefix when needed.

Security Considerations

Decode images only from trusted sources. Processing happens client-side, but very large inputs can still consume significant browser memory.