Image Resizer Online — Free, Custom Dimensions, No Upload
Resize your images to exact pixel dimensions. Reduce file size while maintaining quality. Secure client-side processing.
Upload an Image
Drag and drop or click to select
Supports JPG, PNG, WEBP, GIF
About This Tool
Resize & compress images to exact dimensions
Set precise pixel dimensions, lock the aspect ratio to prevent distortion, and use the quality slider to compress file size — all locally in your browser without any upload.
After resizing, compress the image to reduce file size further, or convert to WEBP for better web performance.
Custom Dimensions
Scale to any pixel width and height you need.
Aspect Ratio Lock
Prevent distortion automatically.
Compression
Reduce file size with the quality slider.
100% Private
No upload — processed locally in your browser.
Quick Start
How to Resize an Image
Upload Image
Select your JPG, PNG, or WEBP image.
Set Dimensions
Enter new width and height in pixels.
Lock Ratio
Toggle 'Maintain Aspect Ratio' to prevent distortion.
Adjust Quality
Use the Quality slider to compress and reduce file size.
Download
Click 'Download Resized Image' to save.
FAQ
Frequently Asked Questions
What happens if I don't maintain aspect ratio?
You can set width and height independently. This may stretch or squash your image if the proportions don't match the original.
How much can I reduce file size?
Lower quality (60-80%) can reduce file size by 50-70% while maintaining acceptable visual quality for web use.
Can I resize images for Instagram or social media?
Yes! Resize to exact dimensions for any platform: 1080x1080 for Instagram posts, 1200x628 for Facebook, 1280x720 for YouTube thumbnails, or 1080x1920 for Stories.
Is my image data safe?
Absolutely. All processing happens locally in your browser using the Canvas API. Your images never leave your device — nothing is uploaded.
What image formats are supported?
Upload JPG, PNG, or WEBP images. Download your resized image as JPG or PNG.
Can I resize multiple images at once?
This tool resizes one image at a time with full control over dimensions. For batch processing, use our Image Compressor which handles multiple files simultaneously.
Use Cases
When to resize an image
Social Media
Resize to platform-specific dimensions: 1080×1080 for Instagram, 1200×628 for Facebook OG, 1280×720 for YouTube.
Web Performance
Oversized images slow down websites. Resize to the display width and combine with the quality slider to minimize file size.
Email Campaigns
Email clients cap image width at ~600px. Resize header and banner images before embedding to avoid layout breaks.
Print Preparation
Resize images to the exact pixel dimensions your printing service or design template requires.
Game Assets
Game engines require textures at power-of-two dimensions (256×256, 512×512, 1024×1024). Resize precisely.
Storage & Sharing
Reduce large camera photos before uploading to cloud storage or sharing via messaging apps with attachment limits.