Image Compressor — Free Online Tool

The Image Compressor re-encodes PNG, JPG, and WebP files directly in your browser using the Canvas API, applying lossy compression at an adjustable quality level rather than just stripping metadata. Most photos compress 40–80% smaller at 80–85% quality with no difference visible to the eye; you can push the quality slider lower for even smaller files when the image is a thumbnail or background element where fine detail matters less.

Because compression happens client-side, there's no upload step and no file leaves your device — useful when the images are unreleased product shots or contain identifiable information. The tool shows an original-versus-compressed size comparison before you download, so you can judge the quality tradeoff yourself rather than trusting a fixed preset.

This matters most for page speed: large hero images and product photos are usually the single biggest contributor to a slow page load, and Core Web Vitals (specifically Largest Contentful Paint) penalize pages that ship oversized images. Compressing before upload to WordPress, Shopify, or any CMS means the exact same visual result loads faster for every visitor, and it also helps when an email attachment or upload form enforces a hard file-size limit.

Our Image Compressor is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.