Free browser image utility

Image Compressor

Resize and compress a local image, compare the file size and download the optimized result. Your image never leaves your device.

Supports JPEG, PNG and WebP images.

Images are processed locally with your browser's canvas. JPEG output removes transparency and fills transparent areas with white. Image metadata is not retained.

How to use the Image Compressor

  1. Click Choose an image and select a JPEG, PNG or WebP file; it is processed on your device and never uploaded.
  2. Pick a Maximum width (640, 1280, 1920 px or keep original), choose the output format and drag the Quality slider to your target level.
  3. Press Compress image to see the original versus optimized size, dimensions and a side-by-side preview.
  4. Press Download optimized image to save the lighter file for your site.

Why it matters

Images are usually the heaviest part of a web page, and heavy pages load slowly, especially on mobile networks. Page speed feeds directly into Core Web Vitals like LCP, which Google uses as a ranking signal, and slow images are the most common cause of poor scores. Smaller files also cut bandwidth costs and bounce rates, because visitors rarely wait for a sluggish gallery. Compressing before upload is one of the highest-return habits in technical SEO.

Image Compressor FAQs

Are my images uploaded anywhere?

No. The image is decoded, resized and re-encoded with your browser's canvas tools entirely on your device. Nothing is sent to a server, which makes the tool safe for client photos, product shots or screenshots that should not leave your computer.

Which format and quality should I choose?

WebP at around 80 percent quality is the best default for web images: much smaller files with little visible loss. Use PNG when you need transparency or pixel-perfect graphics, and JPEG for maximum compatibility with older tools. The side-by-side preview lets you compare each option before downloading.

Why is my compressed file bigger than the original?

This can happen when the original was already well optimized, or when you choose PNG output, which is lossless and can inflate photographic images. Try WebP at 80 percent quality, or pick a smaller maximum width. The stats panel shows the exact percentage change so you can judge each setting objectively.

Will the tool keep my image's EXIF data?

No. Metadata is stripped during processing, so camera settings, GPS location and copyright fields are not retained in the download. That is usually welcome for web publishing, since it also shrinks the file, but keep your original if you need the metadata.