Base64 to Image Converter
Paste a Base64 string or data URI to see the picture it encodes and save it as a real image file — decoded locally in your browser.
Everything is decoded on this device — your Base64 string is never uploaded.
How to Use the Base64 to Image Converter
- Paste your Base64 into the input box. A full data:image/png;base64,... URI and a bare payload both work.
- Click "Convert to image". The decoder strips whitespace, fixes the padding and reads the file signature to work out the format.
- Check the preview along with the detected MIME type and decoded byte size shown underneath it.
- Press "Download image" to save the file with the right extension — .png, .jpg, .gif, .webp or .svg.
- Use "Clear" to empty the box and decode another string.
What Is a Base64 to Image Converter?
A Base64 to image converter reverses the encoding that turns binary picture data into plain text. It decodes the characters back into bytes, rebuilds the original file in memory and hands it to the browser so you can look at it and save it — no server round trip required.
You end up with these strings more often than you would expect: an avatar buried in an API response, a logo pasted into a CSS file, a signature image inside an email source, or a screenshot stored as text in a database column. Because a bare payload carries no MIME type, this decoder sniffs the first bytes — the PNG signature, the JPEG start-of-image marker, GIF8, the RIFF/WEBP header or a leading <svg tag — to name the file correctly on download.
Need the opposite direction? The image to Base64 converter encodes a file into a data URI. For ordinary text use the Base64 encoder and decoder, and shrink the picture you just recovered with the image compressor.
Frequently Asked Questions (FAQ)
How do I convert a Base64 string to an image?
Paste the string into the box and click "Convert to image". The decoded picture appears immediately, and the download button saves it as a real file on your device.
Do I need the data:image prefix?
No. A full data URI is used when present because it states the MIME type, but a bare Base64 payload works too — the tool inspects the decoded bytes to identify the format itself.
How do I convert Base64 to PNG or JPG?
Paste the string and convert it. If the bytes start with the PNG signature the file is saved as image.png; a JPEG start marker produces image.jpg. The detected type is always shown under the preview.
Why does my Base64 string fail to decode?
Usually the copy was truncated, wrapped in quotes, or included characters from a JSON escape. Padding and line breaks are handled automatically, so a failure almost always means the string itself is incomplete.
Can I decode a Base64 SVG?
Yes. A payload that begins with <svg or <?xml is recognised as image/svg+xml, rendered in the preview and downloaded as a .svg file you can open in any vector editor.
Is there a limit on how long the Base64 string can be?
There is no hard limit, but very long strings take longer to decode and render because everything happens in your browser tab. Multi-megabyte payloads are best pasted one at a time.
Is my Base64 data private?
Yes. Decoding uses the browser's own atob and Blob APIs. The string you paste is never sent to ToolGenie or stored anywhere off your device.
Tips for Decoding Base64 Images
- Tip 1: When you copy a string out of JSON, remove the surrounding quotes and any escaped characters first — they are the most common reason a decode fails.
- Tip 2: If the preview is blank but no error appears, the payload is probably a PDF or font rather than an image. The detected type line tells you what the bytes really are.
- Tip 3: URL-safe Base64 uses - and _ in place of + and /. This decoder converts them for you, so tokens taken from URLs or JWT-style payloads decode without editing.
- Tip 4: Round-trip your work: re-encode the saved file with the image to Base64 converter to confirm the strings match, or decode non-image payloads with the Base64 encoder and decoder.