Resize Image
Resize an image online by changing its pixel dimensions. Prepare photos for application forms, websites, printing, PDF pages, and upload limits while keeping proportions when required.
How to use Resize Image
- Upload an image.
- Enter your target width or height.
- Choose whether to keep the aspect ratio.
- Download the resized image.
Resize Image works best when the source files are prepared for the purpose of the final document. If a school, employer, office, website, or printer has a specific format or size requirement, check it before generating the final version.
Why people use this tool
Resize Image is intended for a specific everyday need, such as preparing an image for an upload, organizing document photos, creating a printable PDF, or changing an image format. The important part is to match the source file to the final use case rather than converting a file without checking its quality.
For important files, keep your original copy and review the finished result. An online converter can change a format or dimensions, but it cannot restore detail that was missing from a blurry, dark, cropped, or low-resolution source.
Privacy and safety
Use care with sensitive files. Keep originals on your own device and avoid uploading passwords, highly confidential business records, or other information that does not need to be processed online. File uploads are intended for the requested processing task and should be treated as temporary working files.
For important documents, review the output before sharing it and confirm that all required information is present and readable.
Why image dimensions matter
A modern phone photo can contain far more pixels than a form or website needs. Resizing creates a more practical image for the intended task and can also reduce the size of a later PDF.
The correct dimensions depend on the receiving service. If a form specifies width and height, follow those requirements instead of choosing a random size.
Keep the aspect ratio for normal photos
Keeping the original aspect ratio prevents faces, documents, and objects from looking stretched or compressed. Change both dimensions together unless the destination specifically requires a fixed shape.
For ID photos or other fixed-size images, follow the official dimensions and crop the image appropriately before resizing when necessary.
Resize images before PDF conversion
Large camera images can create unnecessarily heavy PDFs. Resizing suitable source images before conversion can make the final document easier to upload and share.
After resizing, inspect important text or fine details at normal viewing size. Keep the original file if you may need a higher-resolution copy later.
Troubleshooting
Related tools for this task
These links are selected around the same task so you can prepare, convert, or finish your file without searching through the whole site.
Compress JPG after resizing
Reduce file size further when an upload limit is strict.
Next stepCrop the image
Remove unnecessary areas before choosing final dimensions.
Next stepRotate the image
Correct orientation before creating a document.
Next stepConvert resized JPGs to PDF
Create a PDF after preparing image dimensions.
Next stepCreate a PDF from resized images
Combine prepared images into one document.
Frequently asked questions
What does resizing an image change?
Resizing changes the image’s pixel width and height. It does not automatically improve the original image quality.
Should I keep the aspect ratio?
Usually yes for normal photos and documents, because it prevents distortion.
Can resizing reduce file size?
Often yes, because fewer pixels generally require less storage, although the exact size also depends on the image format and compression.
Should I resize before making a PDF?
If the source photos are much larger than needed, resizing first can help create a more practical PDF.