Base64 to Image Converter - Decode Base64 Online

Decode Base64 encoded strings back to images instantly with our free Base64 to Image Converter . This tool transforms Base64 data URIs into viewable JPEG, PNG, GIF, WebP, and SVG images — perfect for recovering embedded images from HTML, CSS, or API responses. Paste a string, preview the image, and download it as a file. No software installation needed, and nothing is uploaded.

Base64 represents binary image bytes as plain text so they can travel inside text formats; decoding reverses that, turning the string back into the original pixels. This is handy when an API hands you an image as a Base64 field, or when you find a data: URI embedded in a stylesheet and want the actual file. To go the other way and encode an image, use the Image to Base64 tool.

Live Example

A short data URI decodes back into a real image file you can download. The MIME prefix tells the browser what format the bytes represent:

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+M8AAAMBAQDJ/pLvAAAAAElFTkSuQmCC

logo.png  (1x1 transparent pixel)

How to Convert Base64 to Image

1. Paste Base64 String: Copy and paste your Base64 encoded string into the input area.
2. Click Convert: Press the Convert button to decode the string into an image.
3. Download or Copy: Save the image to your device or copy it to your clipboard.

Key Features

• ✅ Convert Base64 strings to images online
• ✅ Supports JPG, PNG, GIF, SVG, and more formats
• ✅ Secure, fast, and free conversion
• ✅ Copy and download converted images
• ✅ No data storage — your privacy is protected

Common Use Cases

• Web Development: Recover images embedded as data URIs in HTML or CSS files.
• API Integration: Decode images returned as Base64 strings from REST APIs.
• Email Templates: Extract embedded images from Base64-encoded email content.
• Data Recovery: Convert stored Base64 image data back to viewable image files.

Benefits

• ✅ Free to use with no registration required
• ✅ Runs entirely in your browser — no server uploads
• ✅ Works on all devices — desktop and mobile
• ✅ Instant conversion with real-time preview

About Decoding Base64 to Images

A data URI packages a file inline as text using the form data:[mimetype];base64,[data]. The MIME type — such as image/png or image/jpeg — declares the format, and the Base64 segment after the comma holds the actual image bytes encoded as printable ASCII. Decoding simply reverses the encoding: it reads the Base64 text, converts each group of four characters back into three binary bytes, and reconstructs the original image file the browser can render or you can download.

The format of the output is determined entirely by that MIME prefix, not by the file extension. A string prefixed data:image/png;base64, always decodes to a PNG, even if you save it as .jpg. That is why this tool reads the prefix to set the correct download extension and Content-Type. If the prefix is missing or wrong, the bytes still decode but the browser may not recognise them as an image, producing a broken or blank result.

Common sources of Base64 image strings are REST API responses (where binary uploads are serialised as JSON text), embedded email attachments, data URIs in CSS sprites, and exported configuration files. After recovering the file you may want to inspect its metadata with the Image Data Extractor or convert its format with SVG to PNG.

Common Errors and How to Fix Them

• Blank or broken image: The MIME prefix must match the real bytes. Correct data:image/png;base64, vs data:image/jpeg;base64, for the actual format.
• "Invalid Base64" error: Remove whitespace, newlines, or stray quotes around the string, and ensure the data:...;base64, prefix is intact.
• Wrong file extension on download: The extension follows the MIME type in the data URI, not the original filename. Fix the prefix to control the output type.
• Truncated string: If the input was cut off during copy-paste, decoding fails partway. Re-copy the complete value.