Convert image format online between JPG, PNG, WebP, and other common types without software installation. Upload the source file, pick the output format, and download the converted image instantly. This free browser-based tool processes everything locally. No signup or account needed.
The Image Format Converter converts images between JPEG, PNG, WebP, GIF, and BMP formats directly in your browser, with no file upload to any server. Select your source image, choose the target format, and download the converted file. Format conversion is often necessary when working with systems that accept only specific formats: web browsers and CMS platforms require WebP or JPEG for web delivery, iOS apps may need PNG, some APIs require JPEG exclusively, and older software may only accept BMP. Options include JPEG quality (0-100) for lossy compression control, transparent background handling for PNG-to-JPEG conversion (the transparent areas are replaced with a configurable background color), and output file naming. All conversion uses the HTML5 Canvas API and runs entirely in your browser.
Choosing the right image format for web use has a significant impact on file size and quality. JPEG (Joint Photographic Experts Group) uses lossy compression optimized for photographs: it discards subtle color gradients in ways the human eye does not easily notice, achieving compression ratios of 10:1 to 20:1 at acceptable quality. PNG (Portable Network Graphics) uses lossless compression and supports full transparency (alpha channel), making it ideal for logos, icons, screenshots, and images with sharp edges or text. WebP is Google's modern format that achieves better compression than both JPEG and PNG at equivalent quality: typically 25 to 35 percent smaller than JPEG at the same quality setting, and 26 percent smaller than PNG for lossless images. WebP also supports transparency like PNG. GIF (Graphics Interchange Format) is the oldest format still in use, primarily kept alive by its support for animation. For still images, GIF is inferior to PNG in both quality and compression, limited to 256 colors per frame. Converting to WebP for web delivery is the most impactful single optimization for image-heavy sites. Browser support for WebP is now essentially universal (Chrome, Firefox, Safari 14+, Edge). For cases where legacy Safari support is required, serving WebP via a picture element with a JPEG fallback provides the best result across all browsers.