Image Format Converter
Convert images between JPEG, PNG, WebP, and BMP formats. Choose quality, compare file sizes, download instantly.
Convert To
Free Online Image Format Converter
Convert images between JPEG, PNG, WebP, and BMP formats directly in your browser. This tool uses the Canvas API for conversion — your images stay on your device and are never uploaded to any server. Compare file sizes between formats to find the best option for your use case.
Format Comparison
JPEG is best for photographs and complex images with many colors. It uses lossy compression, producing small files but doesn't support transparency. PNG uses lossless compression and supports transparency — ideal for logos, icons, screenshots, and graphics with sharp edges. WebP is Google's modern format that supports both lossy and lossless compression, typically producing files 25-35% smaller than JPEG at equivalent quality. BMP is an uncompressed format — large files but zero quality loss, useful for image processing pipelines.
When to Convert
Convert PNG screenshots to JPEG or WebP for smaller email attachments. Convert JPEG to PNG when you need to add transparency or prevent further quality loss from re-saving. Convert any format to WebP for the best file size on modern websites — all major browsers now support WebP. Convert to BMP when an application requires uncompressed input.
Frequently Asked Questions
No. Converting a lossy format (JPEG) to a lossless format (PNG) preserves the current quality but cannot recover lost detail. The PNG file will actually be larger. Convert to PNG only to prevent further quality loss from future edits.
JPEG and BMP don't support transparency — transparent areas become white. PNG and WebP both support full alpha transparency. If your image has a transparent background, choose PNG or WebP as the output format.