Image to Base64

What is Image to Base64 Converter?

The Image to Base64 Converter by LambdaTest is a free online tool that helps you instantly convert image to Base64 format. You can upload an image of any format (PNG, JPG, JPEG, WEBP, GIF, SVG, BMP, AVIF, or HEIC), up to 20 MB in size.

Once you upload an image, the tool automatically encodes it into a Base64 image and also generates HTML <img> tag code and CSS background source code. This makes it simple to embed images directly into HTML, CSS, or other text-based documents without needing separate image files or URLs.

It’s fast, secure, and runs entirely in your browser, ensuring your data never leaves your device. Whether you need to convert PNG to Base64, JPG to Base64, or even SVG to Base64, this tool makes the process effortless.

How to Convert Image into Base64 String Using This Tool?

• Upload the Image: Drag, drop, or upload any image file (JPG, JPEG, PNG, GIF, BMP, SVG, WebP, AVIF, or HEIC) up to 20 MB in size using this image to Base64 online converter.
• Click “Convert”: Once the image is uploaded, it’s previewed on the screen. Click the “Convert” button, and the tool will instantly encode your image to Base64 within seconds.
• View Output Formats: After conversion, you’ll get three ready-to-use formats:
  • Base64-encoded string (for embedding directly in code)
  • HTML image code with a Base64 source
  • CSS background source code
• Copy or Download Results: You can copy the Base64 string to your clipboard or download each format as a TXT file for later use.
• Use It Wherever You Need: Embed the generated Base64 image code directly into your web pages, CSS files, or email templates—no hosting or linking required.

What Are the Features of Image to Base64 Converter?

• Supports all major image formats: Converts JPG, JPEG, PNG, GIF, BMP, SVG, WebP, AVIF, and HEIC up to 20 MB in size. You can even convert SVG to Base64 or encode images in various formats seamlessly.
• Instant browser-based conversion: The process runs entirely on your device, ensuring quick, secure, and private results.
• Multiple output formats: Get Base64 string, HTML <img> tag code, and CSS background source code, all in one click.
• Easy export: Copy the Base64 results directly or download them as TXT files.
• Free and secure: 100% free to use, no sign-up or software installation required.
• Works everywhere: Fully compatible across all browsers, operating systems, and devices.

Why Convert Image into Base64 String

• Faster Loading and Fewer Requests: Embedding Base64 images in your HTML or CSS eliminates separate HTTP requests for image files, improving page load time, especially for small icons or logos.
• Simplified File Management: All visual elements stay inside your code, reducing the need for external files or directories. This makes deployment and sharing simpler.
• Ideal for Email Templates: Base64 images are embedded directly into your email’s HTML, ensuring they appear instantly even when external images are blocked by default.
• Works Across All Platforms: Base64-encoded data is supported in every major browser and email client, making it a reliable option for web and digital design.
• Offline Accessibility: Your images remain accessible even without an internet connection since they’re embedded directly in your code.

Example

Once the image is converted into a Base64-encoded string, the encoded image data looks like as given below (shortened for simplicity):

Base64 Encoded String:

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...

The above string can be used instead of a URL in the src attribute of the <img> element in HTML, as shown below:

HTML <img> Code:

<img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT..." alt="image" />

Or, you can insert the same Base64-encoded string as a background image in CSS, using the following format:

CSS Background-image:

url("data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT...");

Other file types such as XML and JSON, also support Base64-encoded image data. You can embed the string within your markup or object structure to include images directly in data files.

Simply upload an image file above, convert it, and experiment with how Base64 data integrates smoothly across different formats like HTML, CSS, JSON, or XML.

Frequently Asked Questions

Can I upload any image format?

Yes. You can upload any image format such as JPG, JPEG, PNG, GIF, BMP, SVG, WebP, AVIF, or HEIC up to 20 MB.

Will this tool convert the image into HTML and CSS code too?

Yes. It generates a Base64-encoded string, HTML <img> tag, and CSS background-image code.

Is there any file size limit?

Yes. You can upload one image up to 20 MB at a time.

Does the tool store or upload my image to a server?

No. All processing happens locally in your browser. Your image is never uploaded, stored, or shared anywhere, it's completely secure.

Do I need to install any software or sign up?

No. It’s a free online image to Base64 converter, accessible directly in your browser.

Can I convert multiple images at once?

No. Currently, only one image per conversion is supported.

Does converting to Base64 change image quality or size?

No. Base64 encoding only changes binary data to text, and it doesn’t affect quality.

Can I use the Base64 output in email templates?

Yes. You can embed Base64 image data in HTML emails for reliable display.

Can I decode Base64 back to an image?

Yes. You can use a Base64 to image converter to easily decode and restore the image.

When should I avoid using Base64 images?

Avoid using Base64 for very large images because it may increase page load time and affect caching.