Free Image Resizer — Pixels & Percentage Online
Resize images by pixel dimensions or percentage with aspect ratio lock. Batch resize multiple images. Free, no signup required.
What is Image Resize?
The Pix2Doc Image Resizer lets you change image dimensions by specifying exact pixel values or a percentage scale. It includes an aspect ratio lock so proportions are maintained automatically — no manual math required. All resizing is done client-side using the browser Canvas API, meaning your files never leave your device. Batch resizing is fully supported: drop multiple images and resize them all to the same target dimensions in one step. This is an essential tool for preparing images for social media platforms (which have specific dimension requirements), creating product thumbnails for e-commerce, or simply making images load faster on websites.
Common Use Cases
- Resizing a banner image to exact pixel dimensions required by a website CMS
- Scaling down high-resolution photos from a camera for web publishing
- Creating thumbnails at 200×200px for an e-commerce product grid
- Batch resizing 50 images to 50% of their original size for a gallery
How to Use Image Resize
Drop your images
Select or drag one or more images. Supports JPG, PNG, WEBP, and BMP.
Set target dimensions
Enter width and/or height in pixels, or choose a percentage (e.g., 50% to halve the size). Toggle the lock icon to preserve or unlock the aspect ratio.
Resize and download
Each image is resized instantly. The original dimensions and new dimensions are shown for confirmation before download.
Supported Formats
| Input | Output |
|---|---|
| JPG / JPEG | JPG |
| PNG | PNG |
| WEBP | WEBP |
| BMP | BMP / PNG |