Free Image to Base64 Converter - Encode & Decode Online
10 usesClick or drag an image here
Supports JPG, PNG, WebP, GIF
Image Base64 Tips
Data URI
The output includes the full data URI with MIME type prefix, ready to embed directly in HTML or CSS
Auto Detect
When decoding, you can paste either a full data URI or raw Base64 string - the tool handles both
Privacy
No image data is sent to any server. All conversion happens entirely in your browser
Dev Use
Base64 encoded images can be embedded directly in HTML, CSS, JSON, or email templates
Frequently Asked Questions
What is Base64 image encoding?
Base64 is a way to represent binary image data as a text string. This allows images to be embedded directly in code without separate file references.
Does Base64 encoding increase file size?
Yes, Base64 encoding increases the data size by approximately 33%. It is best used for small images like icons and thumbnails.
What image formats are supported?
All common formats including PNG, JPG, GIF, WebP, SVG, and BMP. The output preserves the original format in the data URI.
How does an in-browser image Base64 converter ensure my data privacy?
Our Image Base64 Converter prioritizes your privacy by processing all image conversions directly within your web browser. This means your images are never uploaded to our servers. The entire encoding or decoding operation happens locally on your device, ensuring that your sensitive photos or confidential data remain completely private and secure, away from any third-party access.
How do I embed the generated Base64 image data into HTML or CSS for web development?
After converting your image, our tool provides the complete Base64 data URI. To embed it in HTML, place it directly within an `<img>` tag's `src` attribute, like `<img src='data:image/png;base64,...'>`. For CSS, use it as a `background-image` property: `background-image: url('data:image/png;base64,...');`. Our converter automatically includes the correct MIME type (e.g., `image/png`) in the data URI, ensuring proper display in your web projects.
Why is my Base64 image not displaying correctly in my HTML or CSS code?
If your Base64 image isn't rendering, first check the data URI format. Ensure it starts with `data:image/[MIME_TYPE];base64,` and the MIME type (e.g., `image/png`, `image/jpeg`) is correct for your image. Common issues include a malformed Base64 string, missing semicolons, or incorrect placement in CSS `url()` or HTML `<img>` src attributes. Our converter provides the exact data URI for seamless embedding, so verifying correct copy-pasting is key for proper display.
I have a Base64 image string from another source; how can I decode it back into a standard image file using your converter?
Our Image Base64 Converter makes decoding simple. Paste your Base64 data URI string directly into the "Decode Base64 to Image" section. The tool will instantly parse the string and display the embedded image. From there, you can preview the image and download it back to your device in its original format (e.g., PNG, JPG, GIF), allowing you to easily retrieve images from Base64 code snippets.
How to Convert Image Base64
- To encode: Upload an image and get the Base64 data URI string instantly
- Copy the Base64 code to use in your HTML, CSS, or application code
- To decode: Paste a Base64 string and click Convert to see the image
- Download the decoded image as a PNG file
Related Tools
Images are processed locally in your browser, never uploaded to any server.