Free Image Resizer Online –
Resize by Pixels or Percent
Change the width and height of any JPG, PNG, WEBP or GIF image instantly. Type exact pixel dimensions, scale by percentage, or pick a ready-made social media preset — all processed directly in your browser. No upload to any server. No signup required.
Resize Your Image
Drag & drop an image here or
How to Resize an Image Online
Getting the exact dimensions you need takes less than 10 seconds — no design software required.
Upload Your Image
Drag and drop your file into the upload area, or click to browse and select it from your device.
Set New Dimensions
Enter a width and height in pixels, switch to percentage mode, or tap a ready-made preset size.
Keep Proportions Locked
Leave the lock icon active to avoid stretching, or unlock it to set a custom width and height freely.
Download the Result
Click Download to save your newly resized image straight to your device, ready to use anywhere.
Popular Image Resize Presets
These are the sizes people search for most often — pick one directly in the tool above or type your own.
The standard size for Facebook link previews and Open Graph meta images used across most social platforms.
The recommended square resolution for Instagram feed posts, keeping images sharp on every device.
A widescreen resolution ideal for YouTube thumbnails, presentation slides and desktop wallpapers.
A versatile square size used for product thumbnails, marketplace listings and profile pictures.
A common base resolution for app icons and favicons before further export to smaller sizes.
Switch to Percent mode to shrink or enlarge an image proportionally without calculating exact pixels.
Pixels vs Percentage – Which Should You Use?
Choosing the right resize method depends on whether you need an exact target size or a proportional scale.
| Method | Best For | Precision | Aspect Ratio |
|---|---|---|---|
| Pixels | Uploading to a platform with exact size requirements (banners, thumbnails, icons) | Exact — you set the precise width and height | Optional lock to prevent stretching |
| Percent | Quickly shrinking or enlarging an image without a specific target size | Proportional — scales relative to the original | Always preserved automatically |
Frequently Asked Questions About Resizing Images
Everything you need to know about resizing images online quickly and safely.
How do I resize an image online for free?
Will resizing reduce my image quality?
What's the difference between resizing by pixels and by percentage?
Does this tool upload my images to a server?
Can I resize JPG, PNG, WEBP and GIF images?
Do I need to install any software?
Why Use Our Image Resizer?
Thousands of users trust WebToolOcean for fast, private, and reliable image resizing every day.
Instant Results
Resizing happens locally using your browser's own processing power — no server round-trip, no waiting.
100% Private & Secure
Your images never leave your device. All processing happens locally — no cloud storage, no data collection.
Exact or Proportional
Set precise pixel dimensions or scale by percentage, with an aspect-ratio lock to prevent distortion.
Works on Any Device
Fully optimised for desktop, tablet, and mobile. No app download or installation required.
High Quality Output
Smooth image scaling algorithms keep your resized images sharp and true to the original.
Free Forever
No trials, no subscriptions, no credit card. Every feature of this tool is permanently free to use.
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