Image Compressor

Compress images for faster websites

Large images are one of the most common reasons web pages load slowly. Compressing images reduces file size so pages download faster, which can improve Core Web Vitals and user experience—especially on mobile data connections. This tool compresses images locally in your browser, so your files aren’t uploaded for processing.

How the image compressor works

Quality slider

The quality slider controls the tradeoff between file size and visual fidelity (for lossy formats like WebP and JPEG). Lower quality usually means smaller files. A good workflow is to start around 75–85 and adjust until the “after” preview still looks sharp.

Before and after preview

Use the side-by-side previews to check whether compression has introduced visible artifacts (like blockiness or banding). For photos, moderate compression is often acceptable. For UI graphics, logos, and text-heavy images, you may need a higher quality or a lossless format.

WebP vs JPEG vs PNG

• WebP usually offers the best size/quality balance for photos and many graphics.
• JPEG is widely supported and great for photos and gradients.
• PNG is lossless and best for sharp edges, UI elements, and transparency (but file sizes are often larger).

Resize for performance

Resizing can have an even bigger impact than compression. If you only need an image to display at 1200px wide, resizing a 4000px original before uploading can dramatically reduce file size and speed up your pages.

Privacy and metadata

Re-encoding typically removes most metadata (such as EXIF), which can improve privacy and reduce file size. Since processing happens in your browser, the image stays on your device during compression.