Image to Base64 Converter
Private browser editing, your images stay on your device.
Controls
Base64 Output
HTML Image Tag
CSS Background
Upload one image and instantly generate the Base64 string, a ready to copy HTML image tag, and CSS background image code, then copy any output or download the Base64 text as a .txt file. No registration is required.
How to Convert Image to Base64
- Click "Select Image" and choose an image file from your device
- The image will be instantly converted to Base64 format
- View the Base64 string, HTML tag, and CSS background code
- Click "Copy to Clipboard" to copy the Base64 string
- Or copy the ready-to-use HTML or CSS code snippets
- Download the Base64 string as a .txt file if needed
Key Features
Instant Conversion
Convert images to Base64 instantly in your browser.
Ready-to-Use Code
Get Base64 string, HTML img tag, and CSS background-image code ready to paste into your projects.
One-Click Copy
Copy Base64 strings, HTML, or CSS with a single click.
Frequently Asked Questions
Base64 is a binary-to-text encoding scheme that converts binary image data into ASCII text. This allows images to be embedded directly in HTML, CSS, or JSON as text strings.
No. Base64 is a lossless encoding. The decoded image is identical to the original. However, the encoded string is about 33% larger than the original file.
While there's no hard limit, keeping files under 1MB gives the best performance. Very large Base64 strings can slow down page rendering and make code difficult to manage.
No. All conversion happens locally in your browser using the FileReader API. Your images never leave your device.
Yes. Browsers automatically decode Base64 images in HTML img tags or CSS backgrounds. You can also use online tools or programming languages to decode Base64 strings back to image files.
JPG, PNG, GIF, BMP, WEBP, and SVG are supported, and the Base64 output includes the correct MIME type for each format.