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How to compress JPG, PNG, WebP, GIF, SVG, and AVIF images
Understand image compression tradeoffs across common file types and reduce image size for websites, forms, email, and document uploads.
This guide is for users preparing screenshots, product photos, web graphics, scanned IDs, or image attachments that need to upload quickly.
Choose the right expectation
Image compression depends heavily on the file type. JPG and WebP usually shrink well because they can reduce visual detail. PNG files with flat colors may already be efficient, while PNG photos can be much larger than needed.
SVG files are text-based vector images, so compression often means cleaning metadata rather than changing pixels. GIF and AVIF files have their own limits, especially when animation or advanced color data is involved.
Prepare images before compressing
Crop empty background, remove duplicate screenshots, and resize oversized photos when exact dimensions are not required. A 4000 pixel photo used in a small form field wastes upload space.
Keep the original image if it is needed for printing, brand work, or future editing. Use the compressed output for sharing, uploading, or placing inside documents.
Review the result
After download, zoom in on text, faces, labels, QR codes, barcodes, and fine lines. These details are usually the first things to suffer when compression is too aggressive.
For website use, compare file size and visual quality together. The best image is not always the smallest one; it is the smallest file that still looks appropriate in its real context.
Privacy and batches
When compressing many images, group similar files together so you can review results faster. Product photos, scans, and screenshots often need different quality expectations.
Uploaded images are processed for the compression request you start and are intended to be removed from temporary storage after processing. Avoid uploading images that your policy does not allow online.
Checklist rápido
- Crop or resize oversized images before uploading.
- Keep originals for print or future editing.
- Check small text, QR codes, and labels after compression.
- Use compressed images for forms, websites, email, and documents.