Compress images online
Make photos and screenshots smaller without visible loss. Set a quality, or type the file size you need, such as 100 KB for a form upload. Up to 50 images at once, and nothing is uploaded.
Free · No sign-up
How to use it
- Choose your images, drop them on the box, or paste a screenshot with Ctrl+V.
- Keep Quality at 75, or switch to Target file size and enter the limit, such as 100 KB.
- Check the result in the comparison. Drag the slider and turn on actual pixels to look for blur or blocks.
- Download each image, or all of them as one ZIP file.
Why use this tool
Exact size in KB
Type a limit like 50 KB, 200 KB or 1 MB. The tool finds the highest quality that fits and only shrinks the image if it must.
JPG, PNG and WebP
Photos are re-encoded at your quality. PNG files are reduced to a smart colour palette, which often saves 60-80% and keeps transparency.
Before and after
A comparison slider shows the original and the compressed image side by side, also at 100% zoom.
Private by design
Everything runs in your browser. Your images are not uploaded, stored or seen by anyone.
Location data removed
The compressed file is drawn from the pixels only, so GPS position and camera details are not copied.
Batch and ZIP
Compress up to 50 images with the same settings and download them together. Change a setting and all of them update.
Which setting should I use?
| Purpose | Setting | Typical result |
|---|---|---|
| Website photos | Quality 70-80, max. width 1600-2000 px | 150-400 KB per photo |
| Email attachment | Quality 70, max. width 1600 px | 200-300 KB per photo |
| Online form or ID upload | Target size 100 KB or 200 KB | Just under the limit |
| Screenshots and logos (PNG) | Same as original, quality 75 | PNG 60-80% smaller, still sharp |
| Smallest file for modern browsers | WebP, quality 75 | About 25-35% smaller than JPG |
How the target size works
When you enter a size, each image is encoded several times at different quality levels to find the highest one that stays under your limit. If even the lowest quality is still too big, the image is made smaller step by step until it fits. The note under each image tells you the quality used and whether it was resized.
Some forms count 1 KB as 1,000 bytes and others as 1,024 bytes. This tool uses 1,024, which always passes both checks.
Lossy and lossless compression
Lossy compression, as used by JPG and WebP, removes detail the eye barely notices. At quality 70-85 most photos look the same while being several times smaller. Below about 50 you start to see blocks around edges and banding in skies.
PNG is lossless, so the tool compresses it by reducing the number of colours to at most 256, like TinyPNG does. Screenshots, charts and logos usually look identical. Photos saved as PNG get much smaller as JPG or WebP.
Why did my image get bigger?
A file that was already compressed hard cannot shrink much more, and saving it again at a higher quality makes it larger. In that case the original file is kept and the note says so. Choose a lower quality, a smaller size or WebP to save more.
Frequently asked questions
How do I compress an image to 100 KB?
Choose Target file size, click 100 KB and add your image. The tool picks the best quality under 100 KB and resizes only if needed. The new size is shown under the image.
Does compressing reduce the quality?
JPG and WebP compression removes some detail, but at quality 70-85 the difference is hard to see. Use the comparison slider at 100% zoom to check before you download.
Can I compress PNG without losing transparency?
Yes. Keep the format on Same as original or PNG. Transparency is kept. Only JPG has no transparency, so transparent areas turn white there.
Are my images uploaded?
No. Compression runs in your browser, so the images never leave your device. The page keeps working even if you go offline after it has loaded.
How many images can I compress at once?
Up to 50 per batch. Large photos from modern phones take a second or two each. Download them all at once as a ZIP file.
What is the best format for the web?
WebP is usually 25-35% smaller than JPG at the same visual quality and works in all current browsers. Use JPG when a site or form only accepts JPG.
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