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How to Compress Images Without Losing Quality (2026 Guide)

Published March 4, 2026

Large images slow down your site and bloat your email. Learn practical ways to compress images while keeping them looking great.

Whether you're optimizing a website, emailing a photo, or freeing up storage, compressing images is essential. Done right, you can shrink files dramatically with no visible difference. Here's how to compress images without losing quality.

Start with the right format

Format choice matters more than anything else. Use JPG for photos, PNG for graphics with transparency, and WebP when a website supports it — WebP often gives the best size-to-quality ratio of the three.

Use a sensible quality setting

For JPG, quality between 75% and 85% looks almost identical to the original while cutting file size significantly. Below 60%, you'll usually start to see compression artifacts. Start at 80% and go lower only if you need a smaller file.

Resize when you don't need full resolution

A 12-megapixel photo is overkill for a website thumbnail or an email. If you only need a 1200px-wide image for the web, resizing first can reduce file size by 80–90% before you even adjust quality.

Compress in your browser with no uploads

It's easiest to keep your images private. Our browser-based image compressor lets you adjust quality and resize JPG, PNG, and WebP images — all locally on your device.

Tip: For PNG files that are already optimized, converting to JPG or WebP usually gives the biggest size reduction.