Image Converter
Convert images between JPG, PNG, WebP, and ICO formats in your browser. Adjust quality, preview results, see file size savings. Free, 100% client-side.
Drop an image here or click to select
Supports JPEG, PNG, WebP, GIF, BMP, SVG
Reference
How does image format conversion work?
This tool uses the browser's built-in Canvas API to decode images and re-encode them in a different format. The image is drawn onto an HTML Canvas element, then exported using canvas.toBlob() with the selected output format and quality level. For ICO files, the tool constructs a valid ICO binary using ArrayBuffer with a BMP-based icon directory. All processing happens locally — no images are uploaded anywhere.
Image formats explained
JPEG: Lossy compression, best for photographs and complex color images. Supports quality adjustment (1–100%). No transparency. The most widely supported format.
PNG: Lossless compression, best for screenshots, graphics, text overlays, and images requiring transparency (alpha channel). Larger file sizes than JPEG for photos.
WebP: Modern format by Google, supports both lossy and lossless compression. Achieves 25–35% smaller files than JPEG at equivalent quality. Supports transparency and animation. Supported by all modern browsers.
ICO: Icon format used for website favicons and Windows application icons. Contains one or more images at specific sizes (16×16, 32×32, 48×48, 64×64). Required for <link rel="icon"> in older browsers.
When to convert image formats
JPG → WebP: Reduce file size for web pages while maintaining quality. Essential for Core Web Vitals optimization.
PNG → JPG: Convert screenshots or graphics to smaller files when transparency is not needed.
Any → ICO: Create favicons for websites from existing logos or icons. Standard sizes: 16×16 for browser tabs, 32×32 for taskbar, 48×48 for desktop shortcuts.
WebP → PNG/JPG: Convert modern format images for compatibility with older systems or applications that don't support WebP.
SVG → PNG: Rasterize vector graphics at a specific resolution for use in contexts that don't support SVG.
How to convert an image
Drop an image file onto the upload area or click to select one. The input format is auto-detected. Choose your desired output format from the dropdown. For JPEG and WebP, adjust the quality slider (80% is a good default). For ICO, select the icon size. Click Convert to process the image. Preview the result and check the file size comparison. Click Download to save the converted file.
Privacy
All image conversion runs 100% in your browser using the Canvas API. No images are uploaded to any server — your files never leave your device.