Base64.imBase64 Online Encoding and Decoding(The best Base64 online tool)
Base64.im Tutorial
1. Why use Base64 encoding?
Base64 encoding is a way to convert binary data (such as image files) into text format, which is very suitable for the following scenarios:
- Fast loading of small images: Embed Base64 images in HTML or CSS files to avoid additional HTTP requests and increase loading speed.
- HTML email signature: Embed images through Base64 encoding to avoid triggering the "show image" warning in email clients.
- Single file demonstration: Create a single file model or demonstration page for customers without external resources.
2. Supported image formats
This tool supports encoding of the following common image formats: .jpeg, .png, .gif, .webp, .svg, .BMP, and .bmp.
3. How to convert images using base64.im
Upload image:Select the image you want to encode by dragging the image file to the browser window or clicking the Upload button.
View the result:After the file is uploaded, you can see the Base64 string below.
Limit on the number of uploads:You can upload up to 20 files at a time.
4. Use Base64 encoded images as HTML image sources
Base64 strings can be used as the `src` attribute value of the `img` tag in HTML. Here is an example:
<img src="data:image/jpeg;base64,/9j/4RiDRXhpZgAATU0AKgA..." width="100" height="50" alt="base64 test">
Usage steps:
①. Click the copy button provided by the tool to copy the Base64 string to the clipboard.
②. If your browser does not support direct copying, you can manually copy the string from the dialog box.
③. Paste the string into the `src` attribute in the HTML file.
You can view the base64 image demo on CodePen.
5. Use Base64-encoded images as CSS backgrounds
Base64 strings can also be used as CSS's `background` property value to define background images. Here is an example:
.my-class {
background: url('data:image/jpeg;base64,/9j/4RiDRXhpZgAATU0AKgA...');
}
Usage steps:
①. Click the tool's copy button to copy the Base64 string to the clipboard.
②. If the copy button is unavailable, you can manually copy the string from the dialog box.
③. Paste the string into the `url()` parameter in the CSS file.
You can view the base64 CSS demo on CodePen.
6. Notes
Base64 encoding is suitable for small images. Large files may increase the file size. It is not recommended to use it in large images or resources that need to be loaded frequently.
Make sure the encoded string meets the project requirements and displays normally on different devices.
Through the above steps, you can easily use the Base64 tool to complete the image encoding task and improve development efficiency!