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Reduce Image Size

Reduce file size for any image format — JPG, PNG, WebP, AVIF, GIF and more. Convert to WebP for maximum savings. Free, instant, completely private.

How to reduce image file size effectively

The two most effective techniques for reducing image file size are: (1) reducing quality/compression level, and (2) switching to a more efficient format. For most use cases, converting any image to WebP and setting quality to 75–85 achieves 50–80% file size reduction with minimal visible quality impact.

How much can you reduce image file size?

Source format Output: WebP Q80 Typical reduction
JPEG Q100WebP Q8060–75%
PNG (photo)WebP Q8070–85%
BMPWebP Q8090–97%
JPEG Q85WebP Q8030–45%

Resize to reduce file size even further

Image dimensions have a massive impact on file size — cutting width and height in half reduces the pixel count (and thus file size) by 75%. If your image is 4000×3000 but will only be displayed at 800×600, resize it to those dimensions. Combined with format conversion, this can achieve 90%+ file size reduction.

Frequently asked questions

Drop any image into this tool and convert to WebP at quality 75. This single step typically reduces JPEG/PNG files by 50–80%. For even more reduction, also use the resize inputs to scale the image down to its actual display dimensions — there’s no benefit to serving a 4000px-wide image on a website column that’s 800px wide.
At quality 70–75, most web images look excellent at normal viewing sizes (up to 1200px wide). At quality 60, subtle compression artifacts may appear in complex areas of the image. At quality 50 and below, artifacts become clearly visible. Use the before/after preview to find the lowest quality that still looks acceptable for your use case.
Yes, directly and significantly. A 2 MB image takes roughly 2 seconds to load on a 10 Mbps connection; a 200 KB version loads in 0.2 seconds. Google’s Core Web Vitals metric LCP (Largest Contentful Paint) is heavily influenced by image loading speed. Reducing your hero and product images to under 200 KB can meaningfully improve your SEO performance.
No — the tool runs locally in your browser with no server upload. The practical limit is your device’s RAM. Files up to 50 MB work reliably on modern devices. Very large images (100 MB+) may be slow to process on older hardware.