Resize IMAGE
Resize JPG, PNG, SVG or WebP images by defining new height and width pixels or by percentage. Resize images in bulk online.
Upload an image
or drag & drop images here
Maximum file size: 50 MB
Step-by-Step Instructions
Upload Your Images
Select one or multiple JPG, PNG, WebP, or BMP images from your device or cloud storage.
Choose Dimensions or Percentage
Enter your desired width and height in pixels with optional aspect ratio lock, or scale down by percentage.
Download Resized Images
Download your resized image instantly or get all images packaged in a convenient ZIP file.
Technical Overview & Specifications
Displaying high-resolution camera images without resizing wastes browser memory, slows down website page speed, and can lead to uneven visual layouts.
High-Fidelity Lanczos Resampling: PDFEditor4U employs high-precision Lanczos filtering that smooths diagonal lines, prevents staircasing aliasing, and preserves razor-sharp contrast across fine typography and product details.
Privacy & Confidentiality: All image uploads are encrypted via TLS 1.3, processed in isolated memory sandboxes, and permanently purged automatically within 1 hour.
Practical Everyday Use Cases
Social Media & Profile Pictures
Resize avatars and cover photos to exact specifications for Instagram, LinkedIn, YouTube, and Twitter.
E-commerce & Product Catalogs
Standardize catalog image dimensions across Shopify, Amazon, and WooCommerce for consistent grid layouts.
Passport & Exam Signatures
Quickly set exact pixel dimensions required for online job applications and government forms.
Website Page Speed & Thumbnails
Scale down oversized camera photos to thumbnail dimensions to accelerate web loading times.
Key Features & Capabilities
Resize by Exact Pixels
Define precise width and height measurements for social media banners, passports, websites, and displays.
Aspect Ratio Locking
Automatically sync width and height to prevent image stretching, distortion, or squishing.
Batch Image Resizing
Upload multiple photos at once and resize them simultaneously with high-speed parallel processing.
Do Not Enlarge Protection
Prevent lower-resolution images from being upscaled and pixelated if they are smaller than target dimensions.
Best Practices & Optimization Tips
- Keep "Maintain aspect ratio" checked to prevent your images from looking distorted or stretched.
- Turn on "Do not enlarge if smaller" when resizing folders of mixed resolution photos to avoid pixelation.
- Batch resize multiple photos to easily download them bundled in a single ZIP file.
Privacy & Security Guarantee
Your documents are processed securely via TLS 1.3 encryption and automatically purged from our servers within 1 hour. We never read, share, or store your files.
Frequently Asked Questions
Will resizing images reduce their visual quality?
We use high-grade Lanczos resampling algorithms to ensure downscaled images remain crisp, clear, and free from blurriness or distortion.
Can I resize multiple images at once?
Yes! You can upload multiple images simultaneously. Our tool will resize all of them and offer a single ZIP download.
What happens if I enter width without height?
When "Maintain aspect ratio" is checked, typing a new width automatically calculates the proportionate height for you.
What is the "Do not enlarge if smaller" option?
It ensures that if any uploaded image is already smaller than your target dimensions, it will not be stretched or pixelated.