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Pixbench

Compress images online — free & private

Reduce image file size for faster websites and easier sharing, with a live size estimate so you can see the savings before you download. Compression runs in your browser — your images never leave your device.

Runs entirely in your browser — nothing uploaded

Step by step

How to compress an image

  1. 1

    Add your image

    Drag, browse, or paste the image you want to shrink.

  2. 2

    Pick a format

    Choose WebP or JPG in the Export tab for the best compression.

  3. 3

    Lower the quality

    Drag the quality slider and watch the live estimated output size.

  4. 4

    Download

    Save your smaller image — the download starts instantly.

Smaller images, faster pages

Large images are the most common cause of slow web pages. Compressing them reduces load times, saves bandwidth, and improves Core Web Vitals — all of which help SEO and user experience. This tool lets you compress JPG, PNG and WebP images with precise control.

See the savings before you download

Instead of exporting repeatedly to check the result, the Export tab displays a live estimate of the output file size and the percentage reduction as you adjust the quality slider. Switch formats to compare — WebP and AVIF almost always beat JPG and PNG at the same quality.

Compress further by resizing

If an image is larger than it needs to be displayed, resizing its pixel dimensions is the single most effective way to cut file size. Combine resizing with compression for the smallest possible files, or read our guide on resizing without losing quality.

FAQ

Questions & answers

How do I reduce the file size of an image?

Open the Export tab, choose WebP or JPG, and lower the quality slider. The live estimate shows the new file size; resizing to smaller pixel dimensions reduces it even further.

What is the best format for the smallest file?

AVIF usually produces the smallest files, followed by WebP, then JPG. WebP is the best balance of size and broad browser support.

Will compression make my image blurry?

Only at very low quality settings. Keep quality around 70–85% for photos and the result is usually indistinguishable from the original while being much smaller.

Is there a file size or upload limit?

There is no upload at all — everything is processed locally, so the only limit is your device’s memory. Very large images simply take a moment longer to process.

Explore more tools

Crop an imageAspect & social presets, rounded and circle crops.Convert to WebPPNG/JPG → WebP for smaller, faster images.Compress an imageShrink file size with a live estimate.Resize an imageExact pixel dimensions, quality preserved.

Related guides

Crop an image for InstagramPerfect sizes for posts, stories and reels.Convert PNG to WebPStep-by-step format conversion.Resize without losing qualityKeep images sharp at any size.Remove image metadataStrip EXIF and GPS for privacy.

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