Encode any image to a base64 data URL string, or decode base64 back to a viewable image. Copy, preview, and download — all in your browser.
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1.2 TB
Bandwidth Saved Today
0.4s
Avg Process Time
99.9%
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Knowledge Base
Base64 encoding converts binary image data into a text string that can be embedded directly in HTML, CSS, or JavaScript as a data URL (data:image/png;base64,...). This eliminates an HTTP request for the image.
Use base64 for small icons, inline SVGs, or email templates where you cannot link to external files. For larger images, use standard URLs as base64 increases file size by ~33%.
A data URL follows the format: data:[mime-type];base64,[base64-string]. For example: data:image/png;base64,iVBORw0KGgo...
You can decode a base64 string with or without the data: prefix. If you paste just the raw base64 characters, the tool will automatically prepend data:image/png;base64, to preview it.