Image Compressor

Image compression reduces the file size of a digital image by removing redundant or less important data. There are two categories: lossy compression, which permanently removes some detail to achieve dramatic size reductions, and lossless compression, which reduces size without any quality loss. JPEG uses lossy compression and is ideal for photographs. PNG uses lossless compression and is preferred for graphics with sharp edges and transparency.

The degree of compression is controlled by a quality setting, typically expressed as a percentage. At 80-90% quality, most photographs look virtually identical to the original at a fraction of the file size. A high-resolution image for print needs minimal compression, while a thumbnail on a web page can be compressed aggressively without visible degradation.

Images are typically the largest contributor to web page file size, and page load speed directly affects user experience, bounce rates, and search engine ranking. Google Core Web Vitals include Largest Contentful Paint (LCP), which measures how quickly the main image on a page loads. Unoptimised images are the most common cause of poor LCP scores, and compressing images is one of the most effective actions for improving web performance.

Beyond performance, image compression reduces storage costs on web servers and CDNs, decreases bandwidth usage, makes files easier to share via email and messaging platforms, and speeds up syncing in cloud storage services. For e-commerce sites, where product images must be both high quality and fast-loading, compression is a critical part of the image preparation workflow.