Tools such as AnyWebP help you improve your workflow. In any case, none of the files get uploaded to the server. This tool also offers offline native apps for Mac and Windows that let you bulk convert. You also have the option to convert just about any file format (TIFF, PSD, BMP, etc.) to WebP. You can customize by file size or quality. AnyWebPĪnyWebP is specifically for converting images in WebP format, and you can output to JPEG, PNG, or ICO. There doesn’t seem to be any limit on the file size per image, so this would likely work well for large files of 10 or fewer. lets you upload up to 10 files simultaneously and supports PNG, JPEG, WebP, JPG, and GIF formats. Compressor.io compresses images on the server. The compression, in this case, seems to be on the server side, so you’ll get much faster results. If you want to customize the compression or use larger files, you’ll have to get the Premium plan. Compressor.ioĬompressor.io lets you optimize JPEG, PNG, SVG, GIF, and WebP using lossy or lossless compression up to 10MB per file. WebUtils Bulk Image Compress converts images to WebP, AVIF and JPEG-XL.

You can also adjust quality and size, and everything is done client-side. There doesn’t seem to be an indication of limitations on file size or the number of files, but it is a slow process if you try to do a bulk conversion. WebUtils Bulk Image Compress allows you to compress images and convert them to WebP, JPG, PNG, AVIF, and JXL. But consider this post a compliment to the book, as this will focus purely on different tools available for reducing the size of images. You might already know that Smashing Magazine has published the book Image Optimization by Addy Osmani, which covers this topic in full detail. While many developers spend time optimizing other areas of a web page’s performance, reducing the size of images can have a bigger impact on performance than all other areas combined. In recent years, the web development community has rightfully spread the message widely that images are often the largest resource on any given web page. In this article, Louis Lazaris covers different tools available for reducing the size of images. Optimizing the size of images can have a bigger impact on performance than all other areas combined.

Best free image optimizer