Does Base64 change image quality?
No. Base64 is just an encoding, so image quality stays the same.
Image to Base64 Converter
Convert images to Base64 strings or decode Base64 back to images online. Supports JPG, PNG, GIF and WebP formats.
Upload image
Drag and drop or pick a file.
Drop your image here
Supports JPG, PNG, GIF, WebP · Up to 10MB
Result will appear here.
How to use the Image to Base64 Converter
Convert images to Base64 or decode Base64 back to images in seconds.
- Upload a JPG, PNG, GIF, or WebP image.
- Click Convert to get the Base64 string (with or without a data URL prefix).
- Switch to Base64 to Image, paste a Base64 string, and download the image.
Example
Input
logo.png (120KB)
Output
data:image/png;base64,iVBORw0KGgo...
Paste the Base64 output back into the decoder to restore the image.
What is Base64 for images?
Image Base64 turns binary image data into text so it can be embedded, shared, or stored in text-only formats.
- Useful for data URLs in HTML or CSS.
- Adds about 33% size overhead compared to the original file.
- Not encryption; anyone can decode it back.
When to use image Base64
- Embed small icons in HTML emails without hosting files.
- Send image data through JSON APIs or webhooks.
- Prototype designs with inline assets before upload.
Image to Base64 FAQs
Why is the Base64 string longer?
Base64 encoding adds roughly 33% size overhead.
Is my image uploaded to a server?
No. The conversion happens locally in your browser.
Can I paste a data URL?
Yes. You can paste either a full data URL or raw Base64.