1. Make it smaller in pixels
Phone photos are often 4000 pixels wide or more, far bigger than any screen needs. Halving the width and height cuts the file to about a quarter. 2000 pixels on the longest side is plenty for email and most websites; 1200 is enough for a blog or social post. Resize Image does this, or set a maximum size in the compressor.
2. Pick the right format
- Photos: JPG, or WebP for websites.
- Screenshots, logos and graphics: PNG.
- Photos saved as PNG are several times larger than they need to be; convert them to JPG.
3. Compress
Compress JPG at quality 70–80 usually shrinks a photo by more than half with no visible difference. Compress PNG reduces graphics to fewer colors, often cutting 60–80% while keeping transparency.
Hitting an exact limit
For a limit such as "under 500 KB", type it in Target size in Compress Image, or use a ready-made page such as Compress Image to 100 KB. The highest quality that fits is chosen for you.
What not to do
Do not compress the same JPG again and again: each save loses a little more detail. Keep the original and compress a copy.