Three straightforward steps
- Choose or paste the input requested by this tool.
- Configure the options and run the operation locally.
- Review and download or copy the result.
Images TOOL
Image Resizer
Resize images to exact pixel dimensions in your browser while preserving aspect ratio when requested.
ON-DEVICESelected input is processed in this browser.
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The selected input stays under your control
On-device processing means the input is handled by browser APIs on the device running this page. Closing or refreshing the page normally clears the active in-memory working session.
Read the Privacy Policy →Resize an image to exact display dimensions
Change pixel width and height while choosing whether to preserve the original proportions.
How to use it
- Choose an image and note its original dimensions.
- Enter the required width or height and keep aspect ratio enabled when appropriate.
- Preview and download the resized copy.
Supported input
- JPEG, PNG and WebP images
- Images the browser can decode into a canvas
Worked example
Resize a 4032×3024 camera photo to 1600 pixels wide for a web article while preserving its aspect ratio.
Limitations
- Enlarging a small image cannot create real detail.
- Animated images are not preserved as animations.
Troubleshooting
- If the image looks stretched, enable aspect-ratio locking.
- If processing stops, try a smaller source on memory-limited phones.
Tool-specific questions
Are dimensions measured in pixels?
Yes, the width and height controls use pixels.
Will resizing reduce file size?
Often, but format and image complexity also affect the final size.
Before you process
Can I use this image resizer online without uploading my input?
Yes. This tool is labelled On-device, so the selected input is processed in your browser and is not sent to a ForgeMyFile processing API.
What happens if the browser cannot process it?
The tool shows a readable error and stops. It does not silently fall back to a cloud upload.
Why can performance differ between devices?
The browser is doing the work locally, so speed and practical file size depend on available memory, CPU and browser capabilities.