Load your image
Select an image file from your computer or drop a graphic into the upload box. The tool displays the original dimensions in pixels immediately.
Image tools
Image Resizer
Source image
Local processingResized preview
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
Image Resizer scales photos to exact pixel dimensions or preset sizes using high-quality browser canvas resampling. It preserves aspect ratios automatically and processes images locally without uploading them.
Change the pixel dimensions of pictures, banners, and digital assets with accurate aspect ratio locking. Choose custom width and height values or select common presets for social feeds and website layouts while keeping processing on your device.
Built for daily work
- Resize high-resolution camera photos to web-friendly dimensions before uploading to blog posts.
- Prepare Open Graph share cards at 1200x630 pixels for social media link previews.
- Scale user avatars and profile pictures to consistent square sizes like 400x400 or 1080x1080.
- Resize application screenshots to standard Full HD (1920x1080) for documentation and pitch decks.
How to use this tool
How to use this tool
Select resize mode or presets
Choose custom pixel dimensions or select a standard preset like Full HD (1920x1080) or Social share card (1200x630).
Enable aspect ratio locking
Keep aspect ratio checked so that updating width automatically adjusts height to prevent distorted pictures.
Export the resized graphic
Review the live resized preview and download the finished PNG or JPG file directly to your computer.
Key features
Key features
Custom width and height inputs
Enter exact pixel dimensions to prepare images for strict banner ads, hero headers, or thumbnail layouts.
Automatic aspect ratio lock
Prevents stretching and squishing by linking width and height changes automatically.
One-click web presets
Quickly select common resolutions like 1920x1080, 1280x720, 1080x1080 square, or 1200x630 cards.
High-quality canvas resampling
Uses browser smoothing algorithms to produce clean edges and smooth gradients when scaling down photos.
Local privacy assurance
No images are transmitted to external servers. All resizing happens on your local processor.
Practical use cases
Practical use cases
- Resize high-resolution camera photos to web-friendly dimensions before uploading to blog posts.
- Prepare Open Graph share cards at 1200x630 pixels for social media link previews.
- Scale user avatars and profile pictures to consistent square sizes like 400x400 or 1080x1080.
- Resize application screenshots to standard Full HD (1920x1080) for documentation and pitch decks.
- Create uniform image thumbnails for e-commerce galleries without installing desktop software.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
Input formatsJPG, PNG, WebP, AVIF, GIF
Output formatsJPG, PNG, WebP
ProcessingLocal browser Canvas resampling
Task controlsWidth, height, preset selector, aspect ratio toggle
Maximum local file25 MB per image file
Workspace featuresLive resized preview, dimension calculations, preset shortcuts
Limitations and important notes
Limitations and important notes
- Up-scaling images beyond their original pixel resolution cannot add missing photographic detail.
- Extremely large target dimensions above 10000 pixels may exceed browser canvas memory limits on older mobile devices.
- Animated GIF inputs are resized as static single frames.
- Always check the preview before using resized images in print or commercial production workflows.
Frequently asked questions
Frequently asked questions
Locking aspect ratio ensures that photos do not look stretched or flattened when you change width or height.
Yes, but scaling small raster images to much larger dimensions can cause blurriness or pixelation. Downscaling generally produces sharper results.
Yes. Reducing the pixel dimensions of an image significantly reduces total pixel count and file size.
No. Resizing is performed entirely inside your web browser using local Canvas rendering.
Related guides and solutions
Related guides and solutions
Meet marketplace image size limits before uploading
Etsy, eBay, and Amazon each have minimum image sizes, and uploading too-small photos disables zoom or blocks the listing. The [image resizer](tool:image-resizer) applies the right dimensions locally, and the [marketplace guide](guide:resize-images-marketplaces) lists the exact requirements.
Learn moreHow to resize images for Etsy, eBay, and Amazon
A guide to resizing product photos for Etsy, eBay, and Amazon listing requirements with correct dimensions, aspect ratios, and file sizes.
Learn moreHow to reduce image size for a website without visible quality loss
A practical guide to reducing image size for the web with the [image compressor](tool:image-compressor): why image weight matters, format selection, compression levels, resizing, and verification before publishing.
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