Frequently asked questions

Yes — 100% free, with no signup, no watermarks, no file limits, and no daily caps. The site is supported by unobtrusive ads, which is why we can keep the tool completely free for everyone.

No. All compression happens directly inside your browser using JavaScript and Web Workers. Your files never leave your device, which means your photos stay 100% private — even on shared or work computers.

JPG / JPEG, PNG, WebP, and AVIF for input. You can also convert between formats during compression — for example, turn a 4 MB PNG into a 300 KB WebP in one step.

There is no hard limit imposed by us. The practical limit is your device's memory — most phones handle 20–30 MB photos comfortably, and modern laptops can process 100 MB+ files without issue.

Typical results: JPG photos shrink by 60–80%, PNG screenshots by 50–70%, and converting to WebP or AVIF often gives an additional 25–35% saving on top. A 5 MB phone photo usually ends up around 400–800 KB with no visible quality loss.

At our default settings (quality 78–82) the difference is invisible to the human eye on screens. You can push quality higher if you need print-grade output, or lower for maximum savings on thumbnails and previews.

Yes. Drag in as many images as you like — they'll all be processed in parallel and you can download them individually or as a single ZIP.

Yes, it works in any modern mobile browser (Chrome, Safari, Edge, Firefox). Since processing is local, you don't burn mobile data uploading and downloading files.

By default, yes. We strip EXIF data (camera model, GPS coordinates, timestamps) for privacy and to save additional bytes. This is the right default for web use.

Photos → JPG or WebP. Screenshots, logos, anything with transparency → PNG or WebP. For maximum savings on a modern website → AVIF (with a WebP fallback). We have a full format guide in the blog.

This happens occasionally with already-optimised images (e.g. JPGs that have been compressed several times). If you see this, try a lower quality setting or switch to WebP — you'll almost always get savings.

Absolutely. The compressed images belong to you. Use them on client websites, online stores, marketing material, social media — there are no licensing restrictions on your output.