- 100% free
- No sign-up
- Private
Compress Images Online for Free
Reduce image file sizes without sacrificing too much quality. Fast, private and completely free.
Drag & drop your images here
or
JPG, PNG or WebP · up to 40 MB each · max. 50 images
Your images never leave your device. All compression happens directly in your browser.
Simple by design
How it works
Three steps, a few seconds, zero uploads.
- 01
Add your images
Drag and drop or select JPG, PNG or WebP files — one or fifty at a time.
- 02
Choose a size or quality
Pick a target such as 100 KB, set a custom size or adjust the quality slider. Change the output format if you need to.
- 03
Compare and download
Check the before/after view and download each image or all of them in a single ZIP file.
What happens behind the scenes
Your browser decodes each image, redraws it on a canvas and re-encodes it. When you set a target size, the tool repeats this several times, adjusting quality (and, if you allow it, dimensions) until it finds the best result that fits. Everything runs in a background thread on your device, so the page stays responsive and no file is ever sent to a server.
Why use it
A fast compressor that respects your privacy
Private by design
Images are processed on your device. There are no uploads, no accounts and no copies on any server.
Exact size targets
Need a photo under 100 KB for a form? Choose the limit and the tool finds the best quality that fits.
Batch + ZIP download
Compress up to 50 images at once and download them individually or together in a ZIP file.
JPG, PNG and WebP
Keep the original format or convert it. PNG transparency is preserved when the output format supports it.
Honest results
If a target is impossible, we say so and give you the closest result. No inflated numbers.
Works everywhere
Runs in modern versions of Chrome, Edge, Firefox and Safari, on desktop and mobile.
Guides
Compress to the size you need
Step-by-step guides for the most common upload limits.
- Compress JPG to 100 KBFor forms and portals with a 100 KB photo limit.Open guide
- Compress image to 50 KBFor applications that ask for small photos or signatures.Open guide
- Compress image to 200 KBA good balance for websites, stores and email.Open guide
- Compress image to 1 MBFor upload limits — usually keeps full resolution.Open guide
- Compress PNGLighter screenshots, logos and graphics, with transparency.Open guide
- Reduce photo sizeLighter photos for email, sharing and storage.Open guide
Frequently asked questions
Is this image compressor really free?
Yes. There are no paid plans, no watermarks and no sign-up. You can compress as many images as you like.
Are my images uploaded to a server?
No. All compression happens in your browser using your device’s own processing power. Your images never leave your device, and they disappear when you close the page.
How do I compress an image to 100 KB (or any other size)?
Select “Target size”, choose 100 KB (or enter a custom size) and add your image. The tool tries different quality levels — and, if needed, slightly smaller dimensions — until the file fits under the limit.
What happens if the target size cannot be reached?
You get the smallest result we could produce and a clear warning. We never claim a size was reached when it was not. Allowing resizing or choosing WebP usually solves it.
Which formats are supported?
JPG/JPEG, PNG and WebP, both as input and output. Some browsers (Safari) cannot create WebP files; in that case the tool tells you and you can choose JPG or PNG.
Does compressing reduce quality?
JPG and WebP compression removes detail the eye barely notices. At quality 70–85 the difference is usually invisible on screen. Use the before/after view to check. PNG at 100 quality is lossless.
Is 1 KB equal to 1,000 or 1,024 bytes?
We use 1 KB = 1,000 bytes. That is the stricter definition, so a file under “100 KB” here also passes forms that count 1 KB as 1,024 bytes.
Is image metadata (EXIF, GPS location) kept?
No. Compressed images are re-encoded without metadata, which also removes sensitive data such as the GPS location embedded by phones. The orientation is applied to the pixels, so photos stay the right way up.