Image Compressor
Shrink image file sizes without losing visible quality. Adjust the compression level or let the tool pick the best balance for you. Supports JPG, PNG and WebP files.
How to image compressor
Three steps. No Photoshop skills needed.
Upload your image
Drop any JPG, PNG or WebP file into the compressor.
Adjust quality
Use the slider to balance file size and image quality.
Download compressed file
Save the smaller file. Original quality stays visually intact.
What You Can Do with This Tool
Image compression reduces file size by removing redundant data from the image. There are two types: lossy and lossless. Lossy compression discards some image data permanently, which reduces quality slightly but saves much more space. Lossless compression reorganizes the data more efficiently without losing any quality.
The tradeoff is always quality versus file size. A 5MB product photo compressed to 500KB at 80% quality will look nearly identical to the original in most contexts. Push the quality too low and flat blocks start showing up around lettering, borders and fine detail. The sweet spot for most web images is 70-85% quality.
Compress images when they're going on websites (every KB affects page load time), in emails (large attachments bounce or get blocked), in presentations (50 slides with 5MB images each makes a 250MB file) or in apps (mobile users don't want to burn through their data plan).
This tool lets you control the compression level so you can find the right balance. Preview the result before downloading to make sure it looks good enough for your purpose.
Frequently Asked Questions
How do I compress images without losing quality? Is that even possible?
It depends on the format. PNG compression is lossless. The file gets smaller but every pixel stays identical. JPEG compression is lossy. It throws away some detail to shrink the file. At quality levels above 80%, most people can't see the difference. Below 60%, things start looking rough. Our tool shows you the file size and a preview at each quality level so you can find the sweet spot.
What's the difference between lossy and lossless compression?
Lossless means the image looks exactly the same after compression. Not a single pixel changes. PNG uses this. Lossy means some detail gets removed to make the file smaller. The image looks almost the same but isn't identical. JPEG and WebP use this. For photos, lossy at 80-85% is usually the best balance of size and quality.
Is there a compressor that works in my browser so my photos don't get uploaded to someone else's server?
That's exactly how this tool works. Everything runs locally in your browser. Your images never leave your device and never touch our servers. You can verify this by checking your browser's network tab while using the tool. Zero image uploads.
Which format compresses best: JPG, PNG, WebP or AVIF?
For photos: WebP gives you the smallest files at the best quality, about 25-35% smaller than JPEG at the same visual quality. JPEG is the most compatible format that works everywhere. PNG is much larger for photos but preserves exact colors and transparency. AVIF is even smaller than WebP but doesn't work everywhere yet.
I'm scared of ruining my original photo. Will this tool overwrite my file?
No. The tool creates a new compressed copy. Your original file on your device stays completely untouched. You download the compressed version as a separate file.