Image to Base64 Converter – Encode Image Online
Convert any image to a base64 string instantly. Preview the image, copy the data URI or download it as a TXT file. Works 100% in your browser.
Tool
Enter your values and get results instantly.
How to Use
- 1Click to upload an image (JPG, PNG, GIF, WebP, SVG)\n2. The base64 string is generated instantly\n3. Preview the image and check the encoded length\n4. Copy the data URI or download it as TXT
Benefits
Frequently Asked Questions
What is base64 encoding for images?
Base64 converts binary image data into a text string. You can embed that string directly in HTML (img src), CSS (background-image) or JSON APIs, avoiding a separate file request.
Does base64 increase the file size?
Yes, base64 is about 33% larger than the original binary file. It is best for small images like icons or logos — large photos are usually better served as normal files.
Is the image uploaded anywhere?
No. The conversion happens entirely in your browser using the FileReader API. Your image never leaves your device.
Can I convert SVG files?
Yes, SVG files are supported and convert to a base64 data URI exactly like other image formats.
What is a data URI?
A data URI embeds the file content directly in the URL, for example data:image/png;base64,iVBORw0KGgo... It lets browsers render the image without a network request.