Free & Open Source — No uploads, 100% private

Compress images with
professional-grade quality

Optimize your images directly in the browser. Compare codecs side by side, reduce file sizes by up to 90%, and keep full control — nothing ever leaves your device.

Drag & drop files here or click to upload

Supports JPEG, PNG, WebP, AVIF, SVG, and more

Try a sample image

Select one of the demo images below to see Compressa in action.

Why choose Compressa?

Built for developers, designers, and teams who care about performance.

Dramatically smaller files

Reduce image sizes by up to 90% while maintaining visual quality. Faster load times, lower bandwidth costs.

Side-by-side comparison

Compare original and compressed images with an intuitive slider. Fine-tune settings until the result is perfect.

100% private & secure

All processing happens locally in your browser. Your images never leave your device — zero server uploads.

How it works

Three simple steps to optimized images.

Upload

Drag & drop or select an image from your device.

Compare

Choose a codec, adjust quality, and preview the result side by side.

Download

Save the optimized image instantly — it's already on your device.

snack-bar{display:block;position:fixed;left:0;bottom:0;width:100%;height:0;overflow:visible;z-index:1000}._snackbar_3au65_12{position:fixed;display:flex;box-sizing:border-box;left:50%;bottom:24px;width:380px;margin-left:-190px;background:var(--white,#fff);border:1px solid rgba(0,0,0,.08);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.12),0 0 0 1px rgba(0,0,0,.04);transform-origin:center;color:var(--gray-900,#111827);z-index:1000;cursor:default;will-change:transform;animation:_snackbar-show_3au65_1 .35s cubic-bezier(.16,1,.3,1) 1 forwards}._snackbar_3au65_12[aria-hidden=true]{animation:_snackbar-hide_3au65_1 .25s ease 1 forwards}@keyframes _snackbar-show_3au65_1{0%{opacity:0;transform:scale(.92) translateY(8px)}}@keyframes _snackbar-hide_3au65_1{to{opacity:0;transform:translateY(100%)}}@media (max-width:420px){._snackbar_3au65_12{width:calc(100% - 32px);bottom:16px;left:16px;margin-left:0}}._text_3au65_56{flex:1 1 auto;padding:16px 20px;font-size:100%;font-weight:500;line-height:1.4}._button_3au65_64{position:relative;flex:0 1 auto;padding:10px 16px;height:100%;margin:auto 8px auto -8px;min-width:5em;background:none;border:none;border-radius:8px;color:var(--primary,#4f46e5);font-weight:600;letter-spacing:.03em;font-size:100%;text-transform:uppercase;text-align:center;cursor:pointer;overflow:hidden;transition:all .2s cubic-bezier(.16,1,.3,1);outline:none;text-decoration:none}._button_3au65_64:hover{background-color:rgba(79,70,229,.06);color:var(--primary-hover,#4338ca)}._button_3au65_64:focus-visible{box-shadow:0 0 0 2px rgba(79,70,229,.3)}._button_3au65_64:focus:before{content:"";position:absolute;left:50%;top:50%;width:120%;height:0;padding:0 0 120%;margin:-60% 0 0 -60%;background:rgba(79,70,229,.06);border-radius:50%;transform-origin:center;will-change:transform;animation:_focus-ring_3au65_1 .3s ease-out 1 forwards;pointer-events:none}@keyframes _focus-ring_3au65_1{0%{transform:scale(.01)}}

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Compress images withprofessional-grade quality