Image Resizer
Resize images pixel-perfect
Free forever — no sign-up, nothing uploaded. Files never leave your device.
Image Resizer
Resize images pixel-perfect
Drop your file here
or browse from your device
Browse filesdocument.pdf
1.2 MB
report.pdf
860 KB
100% private
Nothing is uploaded — everything runs in your browser.
Free forever
No account or payment required.
No sign-up
Open the tool and start using it right away.
Local processing
Processing time depends on your input and device.
About this tool
Change image dimensions with aspect-ratio lock and preview, then download the result.
BrainCoder's image resizer lets you quickly resize images to any custom dimensions — perfect for social media profiles, website banners, email headers, document inserts, and more. Just upload your image, enter the desired width and height, and download the resized version in seconds. You can lock the aspect ratio to prevent distortion or unlock it for custom dimensions.
This tool is essential for anyone who works with images regularly. Social media platforms have specific image size requirements, websites need optimized dimensions for fast loading, and documents often require images at particular sizes. BrainCoder's resizer handles all these use cases with a simple, intuitive interface that requires no design software or technical expertise.
Like all BrainCoder tools, the image resizer processes everything locally in your browser. Your photos and graphics never leave your device, making it safe to use for personal photos, proprietary designs, confidential documents, and any images you don't want uploaded to external servers. It's fast, free, and respects your privacy.
Key features
Everything you get with Image Resizer — no premium upsell.
Resize to any custom width and height in pixels
Popular preset sizes for social posts and screens
Lock aspect ratio to prevent stretching or distortion
Export the result as JPG, PNG, or WebP
Preview the resized image and its file size before downloading
Entirely client-side — nothing is uploaded
How to use Image Resizer
Follow the steps below to use the tool.
- 1
Upload Your Image
Click the upload area or drop an image to load it. The image loads and shows its original width and height.
- 2
Set Target Dimensions
Enter a target width and height or choose a common preset. Keep the aspect-ratio lock on to stay in proportion, or turn it off for free-form dimensions.
- 3
Preview and Download
Click 'Resize image', preview the result, then click 'Download' to save it. The new dimensions and file size are shown.
Still free, still private — your files never leave your device.
Launch Image ResizerFrequently asked questions
Quick answers before you launch the tool.
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