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Compress Images for Web — Faster Page Load Speeds

Image file size is one of the biggest factors in web page load speed. Google's Core Web Vitals directly measure loading performance, and oversized images are the most common cause of poor scores. This tool compresses your images for web use — entirely in your browser with no server uploads.

Drop an image here or click to browse

JPEG, PNG, WebP, etc.

All processing happens in your browser. No files are uploaded.

Tips & best practices

  • Aim for images under 200KB for above-the-fold hero images and under 100KB for thumbnails
  • Use WebP format for the best compression-to-quality ratio on modern browsers
  • Compress JPEG images to 70-80% quality — the quality difference is invisible to most viewers
  • Serve different image sizes for different screen widths using srcset attributes
  • Run Google PageSpeed Insights after optimizing to verify your Core Web Vitals improved
  • Images account for 40-60% of most web pages' total size — optimizing them has the biggest impact

Frequently Asked Questions

How much can web images be compressed?

Most photographs can be compressed 60-80% without visible quality loss. PNG screenshots and graphics typically compress 40-60%. The optimal compression depends on image content and how large it displays on the page.

Does image compression affect SEO?

Indirectly, yes. Google uses Core Web Vitals (including Largest Contentful Paint) as ranking factors. Compressed images load faster, improving LCP scores. A 1-second improvement in page load can increase conversions by 7%.

What image format is best for web?

WebP offers the best compression-to-quality ratio for web in 2026 and is supported by all modern browsers. Use JPEG for photographs, PNG for graphics with transparency, and WebP when you can serve modern formats.

What file size should web images be?

Aim for under 200KB for hero/banner images, under 100KB for content images, and under 50KB for thumbnails. Total image weight per page should ideally be under 1MB for good Core Web Vitals scores.

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All processing happens in your browser. No files are uploaded to any server.