guide · compress images without losing quality
The practical goal is not mathematically lossless output. It is a smaller file that still looks right at the size where people will view it.
Best workflow
A 4000px phone photo rarely needs to stay 4000px wide for an article, profile image or product card. Reducing pixel width often saves more bytes than pushing quality too low.
Choose a maximum width close to the final display size, then compress. This keeps detail where it matters and removes pixels users will not see.
For photos, a quality range around 70 to 85 is often a practical place to compare. Lower values can be useful for thumbnails, but they may introduce visible blocks or soft edges.
For screenshots, logos and text-heavy graphics, test WebP or keep PNG when sharp edges and transparency matter more than file size.
Open the compressed result at the size where it will appear on the page or in the upload flow. If it looks clean there, tiny differences at 200% zoom are usually not important.
Keep the original file separately if you may need to edit the image again later.
Some PNG workflows can be lossless, but browser canvas export for smaller web files usually changes encoding. ImgShrink focuses on practical visible quality.
Image detail, dimensions, noise, transparency and output format all affect the final size.
Updated September 4, 2026 · Source checked: 2026-09-04
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