Base64 Encode/Decode
Encode images to Base64 strings or decode Base64 to images online for free. Useful for embedding images in HTML, CSS, or JSON without external files.
Drop an image here or click to browse
PNG, JPEG, WebP, GIF, BMP, SVG — up to 100MB
Frequently Asked Questions
What is Base64 encoding for images?
Base64 encoding converts binary image data into a text string of ASCII characters. This is useful for embedding images directly in HTML, CSS, or JSON files without needing external image files or additional HTTP requests.
When should I use Base64 images?
Base64 is ideal for small images like icons, logos, and sprites that are embedded in HTML or CSS. For larger images, Base64 increases file size by about 33% and slows down page loading — regular image files are better.
How do I use the decoded image?
After decoding a Base64 string, you can preview it in the browser and download it as a PNG file. You can also copy the data URL directly from the Base64 string to use in your code.
Is my image uploaded to a server?
No. All encoding and decoding happens entirely in your browser. Your images and Base64 data never leave your device.