Bring your images.
Drop in a photo or a whole batch. Your originals stay untouched.
Compress, convert and resize · No signup needed
Image resizer
Resize images to a maximum width or height while keeping proportions. Choose output format, compare file sizes, and download one image or a ZIP.
Drop your images here
Choose images from your device, then adjust the settings before processing.
Up to 20 images · 10 MB each · No signup needed✓ No watermarks✓ Originals stay yours✓ Real, measured results
Images are processed on our servers and returned to your browser. CDN sharing publishes results only when you choose it. How it works ↗
ONE TOOL. SO MANY POSSIBILITIES.
9 input formatsCompress images by format
Choose a compressor, converter or resizer for your image.
Compress JPEG ↗
Less weight for your favorite photos.
Compress PNG ↗
Crisp graphics. Clear transparency.
Compress WebP ↗
Give your website a lighter footprint.
Compress AVIF ↗
Adjust AVIF quality and dimensions.
HEIC to JPEG ↗
Your iPhone photos, ready to share.
Compress GIF ↗
Keep your animation moving.
Compress TIFF ↗
Optimize TIFF files with multiple pages.
Resize images ↗
Set maximum width and height in pixels.
THREE STEPS TO SMALLER IMAGES
How to compress images online
Choose your files, adjust settings and review the results.
Make them lighter.
Go with Smart, or find your own balance of size, format and quality.
Take a closer look.
Compare the difference. Download one image or grab the whole ZIP.
A PRACTICAL IMAGE GUIDE
Resize an image without stretching its proportions
Pixel dimensions and file size are different measurements. Resizing reduces the number of pixels; compression controls how those pixels are encoded. Use both when preparing thumbnails, attachments or website images.
How to set maximum dimensions
Upload an image, open fine-tune controls and enter a maximum width, height or both in pixels. One value limits that side. Two values fit the image inside that bounding box while keeping its aspect ratio. Small images are never enlarged.
Check both pixels and bytes
Compress after choosing dimensions, then review the reported output width, height and file size. A 1000-pixel-wide image does not have a fixed KB size. Set a target separately if your destination has a byte limit.
GOOD TO KNOW
About this image tool
Understand the result before choosing your download.
Can I resize to an exact square?
This tool fits within maximum dimensions without cropping or stretching. A non-square source stays non-square. ICO output has its own square-icon handling.
Do I need to fill in both width and height?
No. Leave one blank to limit only the other side. Leave both blank to avoid optional resizing.