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How to compress images without losing quality

Published Aug 19, 2026 ยท Best Convert PDF Team
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Large images slow down websites and fill up storage. The good news: you can usually cut 60โ€“90% of an image's size with almost no visible difference. Here's how.

1. Pick the right format

WebP is the sweet spot in 2026 โ€” typically 25โ€“35% smaller than JPEG at the same quality, with wide browser support. Use JPEG for maximum compatibility, and reserve PNG for graphics that need transparency.

2. Choose quality 70โ€“80%

Quality is the biggest lever. At 70โ€“80% most photos look identical to the original but weigh a fraction. Below 60% you may start to see artifacts in fine detail.

3. Resize before you compress

If your image is 6000px wide but displayed at 1200px, resize it first. Capping the longest side at 1920px (or 1280px for the web) massively reduces size on top of compression.

4. Compress in your browser for privacy

With Best Convert PDF, images are processed locally โ€” they never leave your device. That's faster and fully private.

Try it now โ€” free

Drop your JPG, PNG or WebP images into Best Convert PDF, set quality to ~75%, choose WebP, and download โ€” all free, all private.

Open the free compressor โ†’

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