Free Online Image Converter
Convert photos between PNG, JPG, WebP and BMP in seconds. Supports batch conversion — select several images and download them all as a ZIP. No sign-up, no file uploads.
Which image format should you choose?
Choosing the right image format makes all the difference in your site's performance, the visual quality of your projects, and even page load speed. Each format was created for a specific purpose, and using the wrong one can result in unnecessarily heavy files or a loss of image quality.
The JPEG (or JPG) format is the most popular choice for photographs and images with lots of colors and gradients. It uses lossy compression, meaning it reduces file size by discarding details imperceptible to the human eye. It's the ideal choice for product photos, banners and background images where transparency isn't needed.
PNG shines when quality and transparency are priorities. Since it uses lossless compression, it preserves every detail of the original image. It's widely used for logos, icons, screenshots and any image that needs a transparent background. The tradeoff is a larger file compared to JPEG.
The WebP format is Google's modern format, designed to replace both JPEG and PNG on the web. It offers superior compression — files up to 30% smaller than JPEG — while still supporting transparency like PNG. It's the best choice for sites that prioritize load speed and a good Google PageSpeed score.
BMP is an uncompressed format, guaranteeing maximum quality with zero data loss. Because of that, it produces very large files and isn't recommended for the web. It's better suited to professional editing workflows, high-quality printing and specific Windows applications.
Check the summary below to quickly decide which format to use in each situation:
| Format | Best use | Transparency | Size |
|---|---|---|---|
| JPEG / JPG | Photos, background images, banners | No | Small |
| PNG | Logos, icons, screenshots, text | Yes | Medium to large |
| WebP | Modern websites, any use | Yes | Very small |
| BMP | Advanced editing, printing, Windows | No | Very large |
Why use this converter?
How to convert PNG to JPG (and other formats)
Converting images between formats is a common task for developers, designers and anyone who works with digital content. The right format can significantly reduce file size with no loss of visual quality.
The WebP format is today's best choice for most images on the web: it produces files up to 30% smaller than JPEG and up to 26% smaller than PNG, at equivalent or better quality. All modern browsers (Chrome, Firefox, Safari, Edge) support WebP.
For images with a transparent background, use PNG or WebP — the JPEG format doesn't support transparency and replaces the background with white during conversion.