Compress Image
Drop your images. Set the quality, or type a target size in KB. The work runs in your browser, so your files stay on your computer.
Drop files here
or choose from your computer
JPG, JPEG, PNG, WEBP, GIF, BMP, AVIF, HEIC, HEIF, TIF, TIFF, SVG
Your files never leave your computerHow it works
- Choose your images or drag them into the drop area.
- Set the quality, or type a target size in KB.
- Press Compress, compare the two sizes, download.
Why this tool
- Files stay on your computer. There is no upload.
- Type a target size in KB and the tool finds the quality.
- Reads JPG, PNG, WebP, AVIF, HEIC and TIFF files.
- Compress up to 50 files in one run.
- If the result is larger, you get the original file back.
You compress an image because of a limit. A web form asks for a photo under 100 KB. An email attachment is too heavy. A page loads slowly. One photo from a phone is 4 to 8 MB. On a screen you only need a tenth of that.
Compression means the tool writes the image again. It draws the photo on a canvas and encodes it at the quality you pick. JPG and WebP react to the quality slider. PNG is lossless, so the gain there comes from the pixel size. That is why a PNG gets much smaller as a JPG.
The target size field solves the form problem. Type 100 and the tool lowers the quality in steps, measures the file, and lowers the width if it must. It stops at the first result under your target.
Know the limit. Compression does not bring back lost detail. Do not compress the same file again and again. For print, keep the quality above 90. Keep the original photo and compress a copy.
If the pixel size is also large, use "Resize Image" first. The biggest gain usually comes from there.
Frequently asked questions
Do my files go to a server?
No. The work runs in your browser. Your file never leaves your computer. Open the network tab and see for yourself.
How does the target size work?
The tool lowers the quality step by step and measures the file each time. If that is not enough, it also lowers the width. If it cannot reach the target, it gives the smallest result and a warning.
Why does PNG stay large?
PNG is a lossless format. It does not use the quality slider. For a big drop, select "Turn PNG files into JPG". You lose transparency.
How much quality do I lose?
For photos, 75 percent looks the same to most eyes. For images with text or sharp lines, use 85 percent or more.
What are the limits?
200 MB per file and 50 files per run. Pro allows 2 GB per file.
Can it compress AVIF?
It reads AVIF everywhere. To write AVIF, you need Chrome or Firefox. Safari 17 and later gives partial support. If your browser cannot write it, the output is JPG.