Base64 to Image

A full data URI (data:image/png;base64,…), bare Base64, or even the whole img tag, CSS url(…) or JSON string it sits in: the tool finds the Base64 part. Line breaks, spaces, URL-safe Base64 (- and _) and missing = padding are all fine. You can also load a .txt file that holds it.

PNG, JPEG, GIF, WebP, AVIF, BMP, ICO and SVG. The type is read from the first bytes of the decoded file, so the download gets the right extension even when the data URI declares the wrong type or there is no prefix at all.

Base64 only uses letters, digits, +, / (or - and _) and = at the end. An error usually means the text was cut when it was copied, or other characters slipped in. Copy the value again in full, from the first character after base64, to the last one.

If it decodes to text, open it in the Base64 Encoder/Decoder to read it. If it is another kind of file (a PDF, an archive…), you can still download the raw bytes as a .bin file and rename it with the right extension.

Yes. The SVG is shown as a picture, through an image element, never inserted into the page: any script it may contain does not run. The downloaded file is the exact decoded SVG.

No. Decoding, type detection and the preview happen in your browser. The Base64 you paste is never uploaded.

There is no fixed limit for pasted text; very large strings (several megabytes) are decoded when you pause typing so the page stays responsive. A text file can be loaded up to 50 MB.