Image to Base64 Converter — Free & Easy
Convert images into Base64 strings instantly in your browser. Use the tool below to convert JPG, PNG, GIF or WEBP images to Base64, preview the result, copy to clipboard, or download the encoded file. Everything runs locally — nothing is uploaded.
Quick tip: embedding small images as Base64 in CSS or HTML can reduce requests for tiny icons. For large images prefer optimized image files to keep page size small.
Drag and drop an image here, or
Supported: JPG, PNG, GIF, WEBP, BMP. Max size depends on your browser.
How the Image to Base64 Converter Works
This converter uses HTML5 FileReader API to read selected images and encode them into Base64 representation. The output is a text string that represents the binary image data in ASCII characters. This string can be embedded directly into HTML img tags using data URIs, inserted into CSS, or used in JSON payloads where binary is not accepted.
Common Use Cases
- Embedding small icons or SVGs inline to reduce HTTP requests.
- Converting images for quick testing in email templates or demos.
- Encoding images to send inside JSON payloads for APIs.
- Storing small images inside databases that prefer text formats.
Supported Formats and File Size Considerations
The tool supports JPG, PNG, GIF, BMP and WEBP. Base64 increases file size by roughly 33%. For production use on the web, prefer optimized formats and compression — use an image compressor before encoding to reduce the final payload size.
Performance & Best Practices
- Use Base64 for small assets (icons, small logos) rather than large photos.
- Compress and resize images before converting when possible.
- When embedding in HTML/CSS, consider caching and browser support.
- Be mindful of email size limits when embedding images in emails.
Related Tools (Internal Links)
Use these related utilities on Small Online Tools to prepare images and data:
- Image Compressor — reduce file size before converting
- Image Resizer — resize images for optimized output
- JPG to PNG — format conversion
- PNG to JPG — format conversion
- JSON Formatter — prepare JSON payloads for API testing
- HTML Encoder — escape content for safe embedding
Security & Privacy
The conversion happens in your browser — files are not uploaded to any server. This design protects your privacy and ensures your images remain private. For sensitive images, ensure your device and browser are secure.
FAQ
This tool supports common image formats including JPG, PNG, GIF, BMP and WEBP.
No. Conversion happens entirely in your browser. Your image is not uploaded or stored on our servers.
Yes, but very large images may take longer and produce large Base64 strings. For extremely large files, consider compressing before converting.
Conclusion
The Image to Base64 converter is a small, practical utility for developers, designers, and marketers. It makes embedding, testing, and transporting image data effortless. For production scenarios always evaluate trade-offs between embedding and using optimized image files served by your CDN.