Quality questions
Compression reduces file size by discarding image data the eye barely notices — that is why a photo can lose 70% of its bytes and look identical. Visible quality loss only appears when you push settings too far, and the live preview cards let you catch it before downloading.
There is no way to 'uncompress' a JPG back to its original pixels; the discarded data is gone. Keep your originals if you might need maximum quality later — compress copies, not your only version.
Format questions
Use JPG for photographs, PNG for images needing transparency or razor-sharp text, and WebP when you want the smallest file and your audience uses modern browsers. Converting between formats during compression is fine and often beneficial.
One caution: converting a JPG to PNG does not restore quality — it just makes a bigger file holding the same pixels. Format conversion cannot add detail that compression removed.
Limits and practical questions
You can process up to 20 images per batch, and each image is handled independently — one problematic file never blocks the rest. Very large source images (tens of megapixels) take longer because there is simply more data to crunch, but they still process locally.
Downloads come as individual files or one ZIP containing everything. File names are preserved, so organized inputs stay organized.
Privacy questions
Because compression runs entirely in your browser, your photos are never uploaded to any server. This is especially relevant for personal photos: many online tools require uploading, which means trusting a stranger's server with your images.
Nothing is stored after you leave — no account, no history, no copies on a server somewhere. Close the tab and the session is gone.
Questions about the tool itself
The compressor is free with no account, no watermark, and no daily cap — run as many batches as you like. It works in any modern browser on desktop or mobile, and the interface is available in 15 languages, so the whole team can use it regardless of location.
Each batch holds up to 20 images, processed automatically the moment you select them. Every image gets its own card showing original size, new size, and exact savings percentage; download files individually or grab everything as one ZIP. All of it happens locally in your browser — images are never uploaded, stored, or logged.
If your question is not answered here, the fastest path is simply trying the tool: select an image, drag the quality slider, and watch the cards update. For a tool this visual, hands-on answers beat documentation every time.
Frequently asked questions
Will compressing reduce my image quality?
Only if you push it too far. At sensible settings (quality 75–85 for photos), the difference is invisible — and the preview cards show you exactly what you get first.
What is the best format for compressed images?
WebP for smallest files, JPG for universal photo compatibility, PNG when you need transparency or perfectly crisp text and graphics.
How many images can I compress at once?
Up to 20 per batch, each processed automatically with its own before/after card.
Are my photos uploaded to a server?
No. All compression happens locally in your browser — your images never leave your device.