Free Image Resizer Online
ImgToolkit's image resizer lets you scale any image to exact pixel dimensions in seconds — no software, no login, no cost. Whether you're hitting a platform's upload size requirement, creating a consistent set of thumbnails, or optimizing images for faster page loads, this tool handles it. Everything runs in your browser so your files stay private.
Quick Answer
ImgToolkit's image resizer lets you scale any image to exact pixel dimensions in seconds — no software, no login, no cost. Whether you're hitting a platform's upload size requirement, creating a consistent set of thumbnails, or optimizing images for faster page loads, this tool handles it.
Try it now — free, no signup
Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
4 steps · takes under 1 minute
Upload your image
Drag and drop your JPG, PNG, or WebP file. Current dimensions are shown automatically.
Enter target dimensions
Type your target width and/or height in pixels. Lock the aspect ratio to scale proportionally.
Or enter a percentage
Scale by percentage instead — 50% halves both dimensions, 200% doubles them.
Download the resized image
Your resized image downloads immediately in the same format as the input.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
All processing happens in your browser using WebAssembly and the Canvas API. No files are sent to any server — your images stay completely private.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
Related Free Tools
All tools run in your browser — no account or upload needed
Frequently Asked Questions
3 questions answered