Compress Image
Make photos lighter without making them look worse.
Processed on this device. Nothing is uploaded.
How to use Compress Image
- 1
Click "Select files" or drag your files onto the box.
- 2
Change the options if you need to.
- 3
Click "Compress images" and download the result.
Phone photos are often 4 to 8 MB each, far more than a website or email needs. Set the quality, optionally cap the longest side, and download smaller files. If a file can't get smaller in its own format, you get the original.
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How to compress an image without uploading it
Drop one or more JPG, PNG or WEBP files onto the page. Your browser opens each image, applies the quality you picked and saves a new copy. The work happens on your own computer or phone, so the photos are never sent to a server. That matters for ID scans, payslips or pictures of your children that you would rather not hand to a random website.
Three settings control the result. Quality starts at 70 percent, which is a sensible point for photos that will be viewed on a screen. Max dimension caps the longest side of the image, for example at 1920 px, and keeps the shape. Output format lets you keep the original type or switch to JPG or WEBP. When you keep the format and the new file would come out bigger, the tool hands back the original, so you never end up worse off.
Compression here is lossy for JPG and WEBP. The encoder drops fine detail that the eye barely notices, such as tiny colour shifts in grass or sky. PNG files compressed in their own format stay PNG, which keeps sharp edges but rarely shrinks as much. Each result is named with _compressed at the end, so it will not overwrite your originals when you download it.
Image compression problems and how to fix them
The file is still over the upload limit
Lowering quality alone has a ceiling. A 6000 px wide photo stays heavy even at 50 percent. Set Max dimension to 1920 px or 1280 px first. Most forms and websites never show an image larger than that, and the file usually drops below the limit without touching quality.
My PNG barely got smaller
PNG is a lossless format, so there is less to throw away. If the image is a photo or a screenshot with lots of colours, change Output format to JPG or WEBP. Keep PNG only for logos, icons or anything that needs a transparent background.
The photo looks blotchy after compressing
Blocky patches in skies or soft gradients mean the quality is too low. Run the original again at 80 percent and reduce the dimensions instead. A smaller image at decent quality looks cleaner than a big image at very low quality.
The transparent background turned white
This happens when you pick JPG as the output, because JPG cannot store transparency. Choose WEBP instead. It keeps transparent areas and still gives a small file.
Compress vs resize: which one shrinks the file more?
Compressing keeps the same width and height and lowers how much detail is stored per pixel. Resizing cuts the number of pixels. Halving both sides leaves a quarter of the pixels, so the file falls a lot even at high quality.
For photos going online, do both: cap the size with Max dimension and keep quality between 70 and 80 percent. Use the separate Resize Image tool when you need an exact size such as 1080 by 1080 for a social post.
Questions
How much smaller will my photos get?
Straight-from-the-phone JPGs usually drop by 60 to 80 percent at 70 percent quality, more if you also limit the size.
Is EXIF data removed?
Yes. The compressed image is redrawn, so location and camera details are not copied over.
Can I compress a GIF with this tool?
You can add a GIF, but the result is a still image made from its first frame. Animation is not kept. For moving GIFs you need a dedicated GIF optimiser.
Will compressing the same image twice make it even smaller?
A little, but each lossy pass removes more detail and artefacts add up. Always start again from the original file if the first result is not small enough.
Does compressing an image make it safe to share?
It removes hidden EXIF data such as GPS location, which helps. It does not blur faces, number plates or text, so check what is visible in the picture itself.
Are my files uploaded anywhere?
No. The tool runs in your browser and the files never leave your device. Close the tab and nothing is left behind.