About the Image Compressor
The Image Compressor reduces the file size of your photos so web pages load faster and uploads go through quicker. Large images are the most common reason websites feel slow, especially on mobile data. Compressing an image from several megabytes to a few hundred kilobytes usually makes no visible difference to visitors but a big difference to page speed and Google's Core Web Vitals.
How to Use the Image Compressor
- Choose an image from your computer or phone.
- Set the quality. Around 70–80 is a good balance for website photos.
- Click Compress and compare the original and new file sizes.
- Download the compressed image and use it on your website, blog or marketplace listing.
Choosing the Right Quality
The compressor saves images as JPEG, which is ideal for photographs. Quality 80 keeps photos looking sharp while cutting size dramatically. Quality 60–70 is fine for thumbnails and background images. Below 50 you may start to see blocky artifacts around edges and text. Try a couple of settings and compare.
Resize Before You Compress
A photo straight from a phone camera is often 4000 pixels wide, but a blog column may only be 800 pixels wide. Resizing the image to the size it is actually displayed at saves far more than compression alone. Then compress the resized image for the best result.
JPEG, PNG and WebP
Use JPEG for photos. Use PNG for logos, screenshots and images that need transparency, because JPEG has no transparent background. WebP and AVIF are modern formats that are smaller still and are supported by all current browsers. Read our guide to image formats on the blog for more detail.
Frequently Asked Questions
Will compression reduce quality?
JPEG compression is lossy, but at quality 70–85 the difference is very hard to see while the file becomes much smaller.
What happens to transparent PNGs?
The output is JPEG, which does not support transparency, so transparent areas become solid. Keep logos with transparency as PNG.
Is my image stored?
Your image is processed to create the compressed version and is not published on the website.
What file size should website images be?
Aim for under 200 KB for large photos and under 100 KB for regular content images.