Can I set custom width and height?
Yes. This page is designed for exact dimension control as well as proportional resizing.
Resize Image
Set exact width and height or keep aspect ratio for proportional resizing.
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Drop image hereChoose ImageUp to 25MB • JPG, PNG, WEBP, HEIC, AVIF
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Supported Input and Output
- Accepted input
- JPG, PNG, WebP, AVIF, GIF, TIFF, HEIF/HEIC, BMP, SVG, ICO, and other formats reported by the runtime
- Output
- An image at the entered dimensions and selected format
- Upload limit
- Up to 25 MB per file under the default server configuration
- Controls
- Width, Height, Aspect-ratio option, Output format and quality
What This Processing Changes
Resizing changes the pixel grid. Enlarging an image cannot create original detail, and disabling aspect-ratio preservation can distort the picture.
How to Check the Result
- Expect 320 × 180 pixels for this 16:9 sample, not a square crop.
- Check that circles remain round.
Limits and Troubleshooting
- Keep aspect ratio enabled for proportional resizing.
- Enter only the dimensions required by the destination and verify the downloaded width and height.
What This Image Resizer Helps With
This resize image tool is useful when a file needs exact width and height, smaller dimensions, or a more appropriate size for a destination platform. Common cases include website images, form uploads, marketplace listings, blog assets, and social media preparation.
Enter dimensions in pixels, not centimetres or kilobytes. With aspect ratio enabled, a landscape source fits inside the requested box; it is not automatically cropped into a square.
Choosing Dimensions Carefully
If you know the final display area, resize the image close to that target rather than keeping very large dimensions. This usually improves page speed and keeps file handling simpler.
When the image must not stretch, keep aspect ratio enabled. If a platform requires an exact frame size, custom width and height settings may be more useful.
Frequently Asked Questions
Should I keep aspect ratio on?
Yes when you want to avoid distortion. Turn it off only when you need to force a specific frame size.
Is resizing different from compression?
Yes. Resizing changes dimensions, while compression mainly changes how much data is used to store the image.
Related Tools
- Compress Image
Reduce file size after dimensions are set.
- Passport Size Photo
Use a preset workflow for ID-style image sizing.
- Remove EXIF Data
Clean camera and location metadata before sharing resized photos.
Worked Example: Fit a landscape diagram inside a 320 × 320 box without stretching.
- Upload the sample linked below and keep a separate copy of your original.
- Set Output format: png, width: 320, height: 320, Keep aspect ratio: on.
- Process the image, download it, and perform the checks below.
Check Your Download
- Expect 320 × 180 pixels for this 16:9 sample, not a square crop.
- Check that circles remain round.
Limit: The image resizer does not enlarge smaller sources or crop to fill a square.
Download the example input and repeat the steps above. These are generated test files, not customer uploads.
- Input bytes
- 11,646
- Output bytes
- 8,131
- Verified result
- 320 × 180 pixels; PNG
- Test date
- 2026-10-06
Measurements apply to this sample and these settings. Other inputs and codec versions can produce different sizes and results.