Image Resizer — Free Online Image Resizing Tool
Resize images by pixel dimensions or percentage, with common preset sizes and aspect ratio lock to prevent distortion. Batch processing, no upload, no watermark.
Resizing an image changes its width and height in pixels. This is commonly used to meet upload requirements, standardize asset dimensions, or shrink images for the web. Keeping the aspect ratio locked prevents distortion; enlarging beyond the original resolution will cause blurriness. Processing runs entirely in your browser — no upload required.
When Do You Need to Resize Images
Meet Upload Requirements
Profile photos, ID pictures, and platforms often require exact dimensions.
Standardize Asset Sizes
Batch-resize images to a uniform size for consistent layouts.
Shrink for Faster Loading
Scale web images to their display size to reduce file weight.
Aspect Ratio & Enlarging
Lock Aspect Ratio to Prevent Distortion
Aspect ratio is locked by default: changing the width automatically adjusts the height proportionally so the image is never stretched. Unlock it only when you need to force exact dimensions.
Enlarging Causes Blurriness
Scaling an image beyond its original resolution stretches pixels through interpolation, resulting in a blurry output. Downscaling does not have this issue.
Related Tools
Image Resizing FAQ
No. The format is preserved; only the dimensions change. Use the converter if you need to change format.
No. Enlarging uses pixel interpolation, which makes the image blurrier. Resizing is best for downscaling or fitting exact dimensions.
Yes. Set the target dimensions or percentage once and batch-process all images, then download them as a zip.
No. Processing runs entirely in your browser.