Image
Image Resizer by Pixels
- Browser-based
- No signup
- Stays on your device
- Your file is processed in your browser and is not uploaded to our servers.
This image resizer by pixels targets precise dimensions for ads, favicons, and platform requirements. Enter width and height in pixels, maintain aspect ratio if needed, and export a correctly sized image without desktop software.
Platforms publish required pixel sizes—YouTube thumbnails, Open Graph images, and favicons all have exact specs.
When both dimensions are specified without aspect lock, the image may stretch—use lock unless intentional cropping follows.
100% Client-Side
Your data never leaves your computer.
How to use this tool
Upload your image, enter pixel width and height, enable aspect lock if proportional scaling matters, then download.
Worked example
Example: resize a logo to exactly 512×512 pixels for an app icon submission without distortion.
When to use this
- App store and favicon asset generation.
- Banner ads with fixed IAB sizes.
- Documentation screenshots needing uniform width.
Common examples
- 4000×3000 phone photo → 1200×900 for a blog content column at 2× retina width.
- LinkedIn headshot 2000×2000 → 800×800 avatar export.
- Banner 2400×800 → 1200×400 for faster email newsletter load times.
- 3000×2000 blog hero → 1600×1067 for faster LCP while keeping 3:2 ratio.
- Square logo 1024×1024 → 256×256 favicon source before Favicon Generator.
What people search for
- resize image
- scale image online
- change image dimensions
- resize photo for web
- image resizer pixels
Common mistakes
- Confusing pixel dimensions with DPI for screen use.
- Cropping instead of resizing when aspect ratios differ.
- Using non-uniform stretch on logos.
Related long-tail tasks
- resize to 1920x1080 pixels
- resize image to 100x100 favicon
- batch resize by pixels
How it works
Upload a JPG, PNG, WebP, or GIF image, choose new dimensions or a scale percentage, and download the resized file. Aspect ratio can be locked, and you can keep the original format or export as JPG, PNG, or WebP. Resizing runs entirely in your browser—files are not uploaded to a server.
Limitations
Upscaling cannot recover detail that was not in the original image. Extreme aspect-ratio changes may crop or distort if not constrained.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Related Resize Image guides
These pages use the same resize image with guides tailored to specific search intents.
Frequently asked questions
Pixels vs inches?
Screen display uses pixels. Inches depend on DPI—this tool sets pixel dimensions directly.
Will quality stay sharp?
Downscaling usually looks fine. Upscaling beyond original size may blur.
Can I resize PNG with transparency?
Yes. PNG alpha channels are preserved in standard browser resize paths.
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Related pages
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