Free image resizer.
Any size, no upload.
Resize by dimensions or by percentage, with the aspect ratio locked unless you tell it otherwise. It all happens on your machine.
Free Image Resizer
Resize images to any dimension instantly. 100% private. Your images never leave your device.
Drag & drop images here or browse files
Supports JPG, PNG, and WebP. Up to 50MB per file
Resize Results
How it works
- 1
Upload your images
Drag and drop, or browse to select the files you want resized.
- 2
Set the dimensions
Enter a width or height, or scale by percentage. The aspect ratio stays locked unless you unlock it.
- 3
Download
Resize and save immediately, with no server round trip.
Why resizing beats letting the browser do it
A 4000 pixel wide photograph displayed in a 400 pixel wide slot still downloads all four thousand pixels. The browser scales it down after paying the full cost in bandwidth and decode time.
The most common site-speed mistake
Uploading straight from a phone or camera is the usual cause. Resizing to the largest size the layout will actually display, then compressing, routinely cuts an image's weight by 90% or more.
What size do you need?
A rough guide: full-width hero images around 1600 to 2000 pixels wide, in-content images around 800 to 1200, thumbnails at 400. Double those if you are targeting high-density screens.
Need something else?
After resizing, run the file through the image compressor for the rest of the saving, or the image converter to move it to WebP.
About resizing images
Will resizing reduce image quality?
Scaling down generally preserves quality well. Scaling up (enlarging) can cause some blurriness since the browser must interpolate new pixels. For best results, start with the largest version of your image and resize down.
What dimensions should I use for social media?
Common social media sizes include: Facebook post (1200x630), Instagram post (1080x1080), Twitter/X post (1600x900), LinkedIn post (1200x627), and Pinterest pin (1000x1500). Use the preset buttons or enter custom dimensions.
Can I resize multiple images at once?
Yes! Select or drag-and-drop multiple images, and all will be resized to the same dimensions. You can download them individually or all at once.
What does the aspect ratio lock do?
When the aspect ratio is locked, changing the width automatically adjusts the height proportionally (and vice versa) to prevent image distortion. Unlock it if you need specific non-proportional dimensions.
Are my images uploaded to a server?
No. All resizing happens entirely in your browser using the Canvas API. Your images never leave your device, making this tool completely private and secure.
Is there a maximum image size?
The tool supports files up to 50MB. Since processing happens in your browser, very large images may take a moment depending on your device's processing power.
Images still slowing the site down?
Resizing is half the job. Call and I will tell you what else is costing you load time. Websites are $99 a month.
