Image Resizer
Resize images online for a target layout or web component, then verify the output dimensions.
Resize images to any dimension. Perfect for social media, websites, and print.
Drop your image here
or click to browse • PNG, JPG, WebP, GIF
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About This Tool
Resize images to exact pixel dimensions or by percentage, locally in your browser. Typical jobs: fit a photo to a form's exact requirement (like 600×600 for a visa application), shrink a 4000 px camera file to 1600 px for the web, or produce consistent thumbnail widths for a shop grid. The tool can keep the aspect ratio automatically, pad to an exact canvas with a background color, or crop-to-fill when exact both-dimensions output is required.
How to Use This Tool
- Drop your image.
- Enter the target width or height — the other side updates automatically when the lock is on.
- Pick a mode: fit (keeps ratio), exact canvas (pads with your chosen color), or stretch (distorts — rarely wanted).
- Choose the output format; resampling to JPG at 85 keeps photos sharp.
- Resize and download. For multiple target sizes, run the tool again from the same original — never resize an already-resized image twice.
Advantages & Use Cases
Meet marketplace photo specs (Amazon 1600 px, eBay 1600 px longest side), prepare app store screenshots at exact resolutions, or batch-normalize a blog's images to a 1200 px content width. Consistent dimensions make grids and galleries align perfectly.
Supported Formats & Recommendations
- Downscaling is visually safe at any ratio; upscaling beyond 150% starts to soften — prefer re-shooting or an AI upscaler for big enlargements.
- PNG for UI screenshots and logos, JPG for photos, WebP when size matters most.
- For padding, PNG or JPG with a solid white/black background both work; pick PNG to keep text crisp.
How We Test This Tool
A release passes when a 4000×3000 input resized to 800 px wide is pixel-compared against the reference resampler (no visible aliasing), exact-canvas mode centers correctly with the chosen background, and EXIF orientation is applied before resizing so rotated phone photos come out upright.
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Helpful Resources
Frequently Asked Questions
Does resizing reduce quality?
Downscaling with a proper resampling filter actually makes images look sharper at their new size. Quality loss mainly comes from re-encoding: use quality 85+ for JPG output.
How do I get an exact 600×600 image from a 3:2 photo?
Use the exact-canvas mode: set 600×600, and the tool fits the photo inside and pads the short sides with your background color. For a full-bleed result, use crop-to-fill instead.
Should I resize before or after compressing?
Resize first, then compress — compressing a smaller image is faster and gives the encoder a cleaner result than compressing large and shrinking later.