Image Converter Guide: Convert Images Between PNG, JPEG, WebP, and GIF
Learn how to convert images between formats using your browser. Compare PNG vs JPEG vs WebP for quality, file size, and use cases.
Image Format Comparison
PNG offers lossless compression with transparency support, ideal for screenshots, logos, and graphics with text. JPEG offers lossy compression with smaller file sizes, ideal for photographs. WebP offers both lossy and lossless compression with transparency, providing 25-35% smaller files than PNG/JPEG. GIF supports animation but has a limited 256-color palette.
When to Use Each Format
Use PNG for images with text, sharp edges, or transparency needs. Use JPEG for photographs and complex images where small file size matters more than perfect quality. Use WebP for web performance — it delivers the best quality-to-size ratio. Use GIF only for simple animations — consider MP4 or WebM for video content.
Image Conversion Best Practices
Always keep an original copy before converting. Choose the output format based on your use case, not habit. WebP is supported by all modern browsers and recommended for web use. Resize images before converting for better performance. Lossy formats like JPEG lose quality each time they are re-saved.
Browser-Based Image Processing
Modern browsers can process images using the Canvas API without uploading them to a server. This means your images remain private and processing is instant. The Canvas API supports reading PNG, JPEG, WebP, GIF, and BMP formats and exporting to PNG, JPEG, and WebP.
Using the WebUtil Image Converter
Our free Image Converter converts images between PNG, JPEG, WebP, and GIF formats using your browser's Canvas API. No uploads — your images stay on your device. Select a file, choose the output format, and download the converted image instantly.
Use our free online tool to get started instantly.