Pin designs exported from editors are often several megabytes, far more than a 1000 pixel wide image needs. Large files upload slowly, take longer to load on the blog post the pin links to, and fill up your storage. This compressor scales images to a sensible width and re-saves them as JPG or WebP at a quality you choose, then shows exactly how much smaller each file got.
It runs entirely in your browser, so you can compress private images and client work without uploading anything. Your settings are remembered on this device for the next batch.
Good settings for pin images
Pinterest recommends a 2:3 image such as 1000 × 1500 pixels, so a max width of 1000 px is enough for standard pins. Go up to 1080 px for 9:16 long pins. Quality between 80 and 85 keeps text and edges clean for most photos. Drop to 70 for large background photos and stay at 90 or above for pins with small text on flat color.
JPG has no transparency, so transparent areas are filled with the background color you choose. If you need a different format or want to keep transparency, use the image format converter.
Why smaller files matter
The biggest benefit is on your own website. Pins send people to a page, and if that page loads heavy images it loads slowly on phones. Compressing blog images and pin graphics before you upload them is one of the easiest speed improvements you can make.
Pinterest compresses uploads on its side as well, so a smaller, cleanly compressed file also gives you more control over how the final pin looks. Check the proportions afterwards with the aspect ratio checker.