Image Converter - PNG, JPG, WebP
Convert images between PNG, JPG, WebP, BMP, and GIF. Adjust quality and dimensions. Single or batch mode.
Runs in your browser. No data leaves your device.
Frequently Asked Questions
How does the Image Converter work?
Your image is drawn onto an OffscreenCanvas, then re-encoded to the target format using convertToBlob() with the specified MIME type and quality parameter. For lossy formats like JPEG and WebP, the browser's native encoder applies DCT-based or wavelet compression at the chosen quality level. The result is decoded back to ImageData so you can preview compression artifacts before downloading. PNG encoding is always lossless.
How do I convert a PNG to JPG?
Upload your PNG image, select JPEG as the output format, adjust the quality slider if needed, and click Convert. Your JPG file is ready to download instantly.
Which image format should I choose?
JPG is best for photos and social media (small file size, lossy compression). PNG is best for graphics, logos, and screenshots with transparency or sharp edges (lossless). WebP offers the best of both -- smaller files than JPG with transparency support like PNG. BMP and GIF are useful for legacy compatibility and simple animations.
Can I convert WebP images to PNG or JPG?
Yes. Upload any WebP image and convert it to PNG for lossless quality or JPG for smaller file size. This is useful when you need a format that works everywhere, since some older apps and websites do not support WebP.
Is this image converter free?
Yes. The converter is completely free with no limits, no watermarks, and no signup required.
Can I adjust the output quality?
Yes. For JPG and WebP output, use the quality slider to balance between visual quality and file size. PNG export is always lossless. The tool shows a file size comparison so you can see exactly how much space you save or how much the file grows.