Free online image resizer — resize and crop images
Free online image resizer. Resize images by pixels or percentage, crop to exact dimensions, lock aspect ratio — no upload, runs in your browser.
The resize, compress, and check tools load in your browser. Nothing is uploaded to a server — all processing happens on this device. If you are reading this, the interactive tool is still loading or JavaScript is disabled.
Resize an image to the exact width and height you need, or scale it by a percentage. This free online image resizer works entirely in your browser: no upload, no sign-up, and your image never leaves your device.
Turn on the aspect-ratio lock to keep the original proportions, or turn it off to set width and height independently. Choose fit mode to keep the whole image inside your target box, or crop mode to fill the target exactly — useful for resizing to Instagram post dimensions, Facebook post size, YouTube thumbnail size, or any other platform format.
Pick your output format — WebP, PNG, or JPEG — and download the resized file. The preview matches the download exactly.
FAQ
- Is it free?
- Yes. Every tool on this site is free to use, and no account or sign-up is required.
- Does it work on mobile?
- Yes. The tools run in your mobile browser and adapt to small screens. Very large images can take longer to process on a phone because all the work happens on your device rather than on a server.
- Can I use this as a free image crop tool?
- Yes. Select crop mode, enter your target dimensions, and choose a crop position (center, top, left, and so on). The tool crops and resizes in one step, entirely in your browser.
- What is the standard Instagram post size?
- Instagram supports square posts at 1080 x 1080 px, portrait posts at 1080 x 1350 px (4:5 ratio), and landscape posts at 1080 x 566 px. Use the Social Media Resizer on this site to crop and resize to any of these in one step.
- Can I resize an image by pixels or percentage?
- Yes. Choose dimensions to enter an exact width and height, or choose percentage to scale the image relative to its current size.
- What is the difference between fit, crop, and stretch?
- Fit keeps the whole image and may leave empty areas. Crop fills the target dimensions by trimming some image edges. Stretch fills the target by changing the image proportions.