Click to choose an image, or drag & drop it here
Supports JPG, PNG and WebPWhat is the Image Resizer Tool?
The Image Resizer lets you change the width and height of any image — either to an exact pixel size or a ready-made preset like Instagram Post or Facebook cover size. It works entirely inside your browser, so your photos are never sent to a server; everything happens on your own device.
How Does This Tool Work?
Upload an image
Click the drop zone or drag and drop a JPG, PNG, or WebP file directly into it.
Set dimensions or pick a preset
Type an exact width and height, or choose a social-media preset. The lock icon keeps width and height proportional.
Click Resize Image
The image is redrawn onto an in-browser canvas at your chosen pixel dimensions.
Preview & download
Compare the original and resized image side by side, then download the resized file in one click.
When the aspect-ratio lock is on, changing the width automatically recalculates the height (and vice versa) to keep the image from looking stretched or squashed. Turning the lock off lets you set an exact width and height independently — useful when you need to match a strict size requirement like a specific social media dimension.
Who Should Use This Tool?
- Social media managers preparing images for Instagram, Facebook, or stories
- Bloggers and website owners fitting images to a theme's layout
- Online sellers matching marketplace image size requirements
- Anyone needing a quick, exact-pixel resize without installing software
Why Use ToolNova's Image Resizer?
- Ready-made presets — common social media sizes in one click
- Aspect-ratio lock — resize without distorting your image
- Privacy-friendly — images are resized on your device, never uploaded
- 100% free — no sign-up, no watermarks, no limits