Compress Image Online Free - Reduce JPG PNG WebP Size

Image Compressor

100% free · Your images never leave your browser · No signup needed

Über Image Compressor

The Image Compressor shrinks JPG, PNG and WebP images right in your browser. Adjust the quality slider, optionally cap the maximum width, and choose the output format - then see the before/after file sizes, the exact percentage saved, a visual preview, and download the optimized file.

How to use: 1) Drop an image into the upload box or click to browse. 2) Set the quality (10-100%), an optional max width in pixels (0 keeps the original size), and the output format - JPEG, WebP or PNG. 3) Click Compress Image. 4) Compare the original and compressed sizes, preview the result, and click Download.

Why compress images? Images are the single biggest cause of slow websites. A 4 MB straight-from-the-phone photo can shrink to 150 KB with barely any visible difference - and page speed directly affects Google rankings, bounce rates and conversions. Compressed images also upload faster to marketplaces and job portals, stay under email attachment limits, and make cloud storage last longer. For bloggers and shop owners, image optimization is the highest-ROI speed win available.

Key benefits: Full creative control - a quality slider from 10% to 100%, max-width resizing that proportionally shrinks oversized photos, and format conversion (converting PNG screenshots to WebP often cuts size in half). The honest before/after report shows real byte savings with the percentage, so you can tune quality versus size precisely. Because everything runs client-side with the HTML canvas, your photos are never uploaded to any server - completely safe for private or client images.

Pro tips: For photos, JPEG at 75-80% quality is the sweet spot - much smaller files with no visible loss. For screenshots with text, prefer PNG or WebP to keep edges sharp; JPEG blurs fine text. Converting to WebP gives the best of both worlds and is supported by all modern browsers. Always compress before uploading to WordPress or marketplaces - uploading the original and relying on the platform's compression gives you zero control over quality.

FAQs: Which output format is smallest? Usually WebP, then JPEG; PNG stays lossless but larger - best for graphics with sharp edges and transparency. Will compression ruin quality? At 80% quality the difference is invisible for most photos; lower the slider gradually and check the preview. Can I resize and compress together? Yes - set a max width and huge images are resized proportionally before compression. Is there a file size limit? Only your browser's memory; typical camera photos process in a second or two.

How to Use Image Compressor: Step by Step

1. Click the upload area and select the image you want to shrink — JPG, PNG and WebP files are supported.
2. Your image is processed right in your browser, so nothing is uploaded to any server and the original stays on your device.
3. Adjust the quality setting if available: lower values mean smaller files, higher values keep more detail.
4. Compare the before-and-after file sizes shown on screen to confirm the savings.
5. Download the compressed image and use it in place of the original on your website or social post.

Pro Tips

• Compress images before uploading them to your site — large unoptimized images are one of the most common causes of slow pages.
• For photos, a quality setting around 70–80% usually looks identical to the original while cutting most of the file size.
• Keep a backup of the original full-quality image in case you need it for print or large displays later.