Resize Image
Resize any image to exact pixel dimensions or a percentage of the original. Lock aspect ratio to prevent distortion.
📐
Click or drag an image here
Supports JPG, PNG, WebP
Your files are never uploaded. All processing happens in your browser.
How to Use
- 1
Upload your image
Click to upload or drag and drop any JPG, PNG, or WebP image.
- 2
Set dimensions
Enter width and height in pixels. Toggle the lock to maintain aspect ratio.
- 3
Download
Click Resize & Download to save the resized image.
How It Works
This tool resizes any image to exact pixel dimensions or a percentage of its original size, with an aspect-ratio lock to prevent accidental stretching or squashing — processed entirely in your browser.
Pixel dimensions vs. percentage mode
Pixel mode lets you set an exact width and height (e.g. 1200×800 for a specific platform requirement). Percentage mode scales proportionally — 50% halves both dimensions, 200% doubles them — useful when you want to shrink or enlarge an image without calculating exact target pixels.
Why the aspect ratio lock matters
Changing width and height independently without locking the aspect ratio distorts the image — circles become ovals, faces stretch. The lock (on by default) keeps the original width-to-height proportion intact when you change one dimension, automatically adjusting the other to match.
Examples
Resizing for a social media requirement
Resizing a photo to exactly 1080×1080 pixels for an Instagram post that requires a specific square dimension.
Shrinking for faster web loading
Resizing a 4000×3000 pixel camera photo down to 50% (2000×1500) to reduce file size and load time on a website, without cropping any content.
Common Use Cases
- Meeting exact pixel dimension requirements for social media, ad platforms, or website uploads
- Shrinking large camera or phone photos for faster web page loading
- Enlarging a small image (with some quality tradeoff) for a specific display size
Tips
- Keep the aspect ratio lock on unless you specifically want to intentionally distort the image — unlocking it and setting mismatched dimensions is the most common cause of stretched-looking photos.
- Enlarging an image beyond its original resolution doesn't add real detail — it just stretches existing pixels, so significant upscaling will look softer or blurrier than the original.
Frequently Asked Questions
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