How to compress an image
- Drop your images into the box above — JPG, PNG, WebP or even HEIC.
- Choose an output format and quality level. Watch the size savings appear next to each file.
- Not small enough? Lower the slider and drop the file in again. Then download.
Why compress images?
Oversized images are the #1 cause of slow web pages, rejected uploads and bloated email attachments. Compressing a photo from 4 MB down to 300 KB usually costs no visible quality at all — modern codecs are that good. This tool shows the before → after size and percentage saved for every file, so you can find the sweet spot between quality and size in seconds instead of guessing.
Frequently asked questions
How does image compression work?
Lossy compression discards visual detail your eye barely notices — subtle color variations and fine noise. At 70–85% quality, most photos look identical to the original while shrinking to a fraction of the size.
What quality level should I choose?
75% is a great default for web use. Use 85–90% for photos you care about, and 50–65% only when the smallest possible file matters more than fine detail.
Should I compress to WebP or JPG?
WebP produces smaller files at the same quality and is the better choice for websites. Pick JPG when you need maximum compatibility with older software or upload forms.
Is there a file size limit?
No. Compression runs on your own device, so there are no server-imposed limits — batch-compress as many images as you like, free.