Compression guide
Compress Image Online
What makes an image file smaller
Image file size is affected by pixel dimensions, format, compression method, and quality settings. Reducing width and height usually makes the biggest difference because the image contains fewer pixels.
Lowering JPG or WebP quality can also reduce file size while keeping the image visually acceptable. The best setting depends on whether the image is a photo, screenshot, logo, or product graphic.
Which format should you choose?
- JPG is good for photos and product images without transparency.
- PNG is good for logos, screenshots, icons, and transparent graphics.
- WebP is good for websites because it often creates smaller files.
Quality setting tips
A quality setting around 80% is a good starting point for JPG and WebP. If the image still looks clear, try 70%. If text, faces, or product edges look rough, increase the quality or use PNG for graphic-style images.
Always check the exported image before publishing. Compression that looks fine on a desktop screen may look different after a social platform or marketplace compresses it again.
Practical compression workflow
- Start with the original image instead of a screenshot of a screenshot.
- Resize the image to the largest size you actually need.
- Choose JPG or WebP for photos and PNG for transparency.
- Export once, inspect the result, and adjust quality if needed.
FAQ
Why is my compressed image still large?
The image may still have large dimensions, transparency, or detailed content. Try reducing width and height before lowering quality further.
Does compression reduce quality?
Lossy formats such as JPG and WebP can reduce quality. PNG compression usually preserves visual quality but may not reduce file size as much.
Should I compress before uploading to social media?
Usually yes, especially if the platform has a file size limit. Keep enough quality so text, faces, and product details stay clear.