Image Compressor. Free, private, no upload.
Shrink JPG, PNG and WebP images on your device. Auto quality finds the smallest file that still looks identical. No upload, no batch caps, no monthly quota.
Most image compressors run on someone else's server, which is why they meter you: a fixed number of images per month, twenty files per batch, a few megabytes per file, and a paid tier waiting behind each limit. Filexum has no server in the loop. The compression runs inside this page, on your own device, so there is nothing to meter and nothing to upload. Drop in a whole folder of mixed JPG, PNG and WebP files and get the same pictures back at a fraction of the size, while the originals never leave your machine.
How it works
- 1 Drop your images into the box above, or click to browse. JPG, PNG and WebP all work, in any mix and any number.
- 2 Leave quality on Auto. It measures each image and picks the smallest file that still looks identical, photo by photo. Prefer full control? Switch to Manual and set your own level.
- 3 Check any result with the before and after slider, then download files one by one or grab the whole batch as a .zip.
Yes. Nothing is uploaded, so nothing is metered.
Server-based compressors have to limit you: every image they take costs them compute and bandwidth, and your photos sit in their infrastructure while it happens. Filexum does the work inside your browser instead. That is both the privacy story and the reason there are no quotas here. Switch off the Wi-Fi and it keeps compressing, which is all the proof you need that your images stay with you. See how on the how we can't see your files page.
- Your images are uploaded to a stranger's server
- Monthly quotas, batch caps and size ceilings
- The good limits sit behind a paid plan
- Needs a working internet connection
- Images are compressed on your device, nothing is uploaded
- No quotas or caps: your hardware does the work
- Everything is free, there is no server bill to cover
- Works with the Wi-Fi off, because nothing is ever sent
What to expect
| Content | Typical saving | Notes |
|---|---|---|
| Camera and phone photos (JPG) | 40 to 70% | Auto quality, tuned per photo |
| Screenshots and UI graphics (PNG) | 50 to 80% | Smart palette reduction |
| Illustrations and logos (PNG) | 60 to 90% | Transparency is preserved |
| WebP images | 10 to 40% | Depends on how they were made |
| Already optimized files | 0% | Returned unchanged, never larger |
Measured on real photos and screenshots. Your numbers depend on how the files were made; the one guarantee is that a file never comes back larger.
Frequently asked
Are my images uploaded to a server?
No. The compressor is code that runs inside your browser, on your own device. No image, thumbnail, filename or hash is sent anywhere. You can switch off Wi-Fi and it keeps working.
How many images can I compress?
As many as you like, as often as you like. There is no monthly quota, no files-per-batch cap and no size ceiling, because there is no server whose bill those limits would protect. The only practical bound is your device's memory.
Will I see a quality difference?
The Auto mode is built not to let you. It re-encodes each image at progressively lower quality and measures the result against the original, stopping at the smallest file that still scores as visually identical. Use the before and after slider on any photo to judge with your own eyes.
How much smaller will my images get?
Typical photos straight from a camera or phone shrink by 40 to 70 percent. Screenshots and graphics saved as PNG often drop by 50 to 80 percent. Files that are already tightly compressed shrink less, and if nothing can be saved you simply get your original back, never a bigger file.
What happens to EXIF data like location and camera model?
It is removed. Compressed copies are rebuilt from pixels, so GPS coordinates, camera serial numbers and editing history do not ride along. That makes files smaller and safer to share. Your originals keep their metadata untouched.
Which formats does it support?
JPG, PNG and WebP today, and each file keeps its own format by default. You can also convert everything to WebP while compressing, which is usually the smallest of the three. HEIC photos from iPhones are handled by our HEIC converter.
Why is this free? What's the catch?
There is no catch to fund. Because your device does the work, serving this page costs about as much as serving any web page, so there is no compute bill to pass on. No ads, no account, no watermark.