Online JPEG & PNG Bildkompressor

Large image files can slow down your website, increase bounce rates, and consume unnecessary bandwidth. Our free online image compressor helps you shrink your JPEG and PNG files by adjusting the compression quality. This means faster loading times, improved user experience, and better SEO performance for your web pages. You get to choose the perfect balance between file size and quality, all within your browser!

Image compression is one of the most effective ways to improve your website's performance. Studies show that images account for up to 80% of the total weight of a web page. By compressing your images, you can significantly reduce page load times, which directly impacts user experience, conversion rates, and search engine rankings. Google officially considers page speed as a ranking factor, making image optimization essential for SEO.

Our browser-based image compressor uses advanced compression algorithms to reduce file sizes without noticeable quality loss. Unlike server-side solutions that require uploading your images to external servers, our tool processes everything locally on your device. This means your images never leave your computer, ensuring complete privacy and data security. There's no registration required, no file size limits imposed by server capacity, and no waiting for uploads to complete.

The compression quality slider gives you full control over the balance between file size and visual quality. For web use, a quality setting between 0.7 and 0.85 typically provides the best balance for photographs and complex images. For simple graphics or icons, you can often use lower quality settings without visible degradation. Experiment with different settings to find the optimal balance for your specific use case.

Beyond basic compression, our tool also supports format conversion. You can convert images to WebP or AVIF formats, which are modern image formats designed specifically for the web. These formats can achieve 25-50% smaller file sizes compared to traditional JPEG at equivalent visual quality. AVIF is particularly impressive, offering the smallest file sizes while maintaining excellent image quality.