Compress Image Online — No Upload, No Watermark
Drop in a photo and Nexby shrinks it inside your own browser — the file is never sent to a server, so there is no upload wait, no queue and no one storing your pictures. Set a quality level, or tell it "under 200 KB" and it finds the settings for you.
- Add images — Drag photos into the box or click to pick them. Up to 20 files at once, JPG / PNG / WebP / anything your browser can open.
- Pick the settings — Choose the output format, the longest side in pixels, and either a quality level or an exact target size in KB.
- Compress — Hit the button. Each file is re-encoded on your device and you see the before and after size immediately.
- Save — Download one image, or all of them in a single click. Filenames get a -nexby suffix so nothing overwrites your originals.
- Target-size mode does a quality search for you, so a 9 MB phone photo can land under a 200 KB portal limit without guessing.
- Transparency is kept when you choose PNG; it is flattened onto white for JPG so you do not get a black background.
- EXIF metadata, including GPS coordinates, is stripped on export — useful before posting a photo publicly.
- No watermarks, no account, no "3 free compressions" counter, and no file left on any server.
Compress Image Free — questions
Is it safe to compress images here if they contain personal documents?
Yes, because the image is never uploaded. Your browser reads the file into a canvas, redraws it at the size you chose and exports a new file. There is no network request carrying your photo, which is also why there is nothing for anyone to store or leak.
Why does the file sometimes get bigger, especially with PNG?
PNG is lossless and works well for flat graphics but badly for photographs — a photo saved as PNG can grow. If a row shows a plus percentage, switch the output format to JPG or WebP and compress again.
How much smaller can a photo get?
A typical phone photo drops 70–90% with no visible difference, because camera sensors produce far more detail than a screen or a WhatsApp message needs. Around 70–80 quality is the usual sweet spot for web use.
Which format should I choose, JPG or WebP?
Use JPG for email, forms, government portals and anything you do not control — every device opens it. Use WebP for your own website, where it is usually about 30% smaller at the same visual quality.
Will reducing the pixel size hurt my image?
Only if you need it that big. A 1920-pixel longest side is enough for a full-screen web image, 800 is enough for a form upload or an attachment, and 480 is a thumbnail. Keeping the original pixels and only lowering quality preserves sharpness on zoom.
Does this work offline?
Once the page has loaded, compression runs entirely on your device, so it keeps working on a weak or dropped connection. Re-adding new files after a reload obviously needs the page again.