About Resize Images Online
Scale your photos to exact pixel dimensions with optional aspect-ratio locking. Resize for social media, websites, print, or any custom requirement. Processed entirely in your browser for complete privacy. No signup, no upload, no limits.
How to Resize Images Online
- Upload your photo, logo, or image file.
- Enter target width and height in pixels.
- Toggle aspect-ratio lock to prevent stretching.
- Click 'Process Files' to resize and download.
Frequently Asked Questions
Q.Does aspect-ratio locking prevent distortion?▼
Yes. When enabled, changing the width automatically updates the height proportionally and vice versa.
Q.Can I resize images to larger dimensions?▼
Yes, but upscaling beyond the original resolution may cause pixelation depending on the source image quality.
Q.Where are my files processed?▼
Entirely in your browser. No image data is ever sent to any server or cloud service.
Q.What formats are supported for resizing?▼
JPEG, PNG, and WebP images can all be resized. The output maintains the original format.
Q.Can I resize images for social media?▼
Absolutely. Enter the platform's recommended dimensions (e.g., 1080×1080 for Instagram) and resize instantly.
Best Free Online Image Resizer — PDFDock
Resize your images with pixel-perfect precision without uploading them to any server.
| Feature | PDFDock | Others |
|---|---|---|
| File Upload Required | No — browser-based | Yes |
| Aspect Ratio Lock | Yes — toggle on/off | Varies |
| Privacy | 100% private | Images on servers |
| Free Usage | Unlimited | Limited |
| Custom Dimensions | Exact pixel control | Preset sizes often |
| Works Offline | Yes | No |
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Your Privacy is Guaranteed
Canvas resizing draws the image on adjusted grid bounds locally before generating the final blob.PDFDock operates 100% offline after the initial page load. We have no backend servers, no database, and no file storage. Your documents are processed entirely in your browser's memory and are never transmitted over the network. This makes PDFDock inherently compliant with GDPR, CCPA, HIPAA, and other global privacy regulations.