Image Resizer
Upload an image and resize it for websites, documents or social media.
PRACTICAL WORKFLOW NOTES
Resize for the Final Dimensions, Not Just a Smaller Image
Image Resizer changes pixel dimensions. Enter a width, a height, or both, then create resized JPG, PNG, or WebP output in the browser. When only one dimension is entered and Keep aspect ratio is enabled, the other dimension is calculated automatically. When both width and height are entered, the current tool resizes to those exact values, which can change the image proportions if the target ratio differs from the source.
Upload one or more JPG, PNG, or WebP files. Set the pixel dimension you need. Enter one dimension to preserve proportions automatically when Keep aspect ratio is enabled. Enter both width and height when the output must use those exact pixel values.
The useful controls in Image Resizer are meant to solve different file situations. Enter only width or only height and the other value is calculated from the source proportions. Enter both dimensions to force the output canvas to those values. A different target ratio can stretch or squeeze the image. The general Image Resizer changes dimensions directly; it is not the same as the social tools that offer Fill and crop or Fit with background.
The current Image Resizer decodes the source image, draws the requested pixel dimensions, and creates the result on your device. If the next task changes, Resize Image to 16:9 is the better follow-up when you need to use the fixed 1280×720 widescreen preset.
How to Use Image Resizer
Follow the workflow below and review the result before downloading.
Add images
Upload one or more JPG, PNG, or WebP files.
Enter width or height
Set the pixel dimension you need. Enter one dimension to preserve proportions automatically when Keep aspect ratio is enabled.
Set both dimensions when exact size matters
Enter both width and height when the output must use those exact pixel values.
Choose output format and compression
Keep the source format or choose JPG, PNG, or WebP, then use the available compression setting.
Resize and download
Create the resized images and save them individually or together as a ZIP.
Know When the Aspect Ratio Is Preserved
The tool can calculate one dimension from the other, but an exact width-and-height pair takes priority when both values are supplied.
One dimension + Keep aspect ratio
Enter only width or only height and the other value is calculated from the source proportions.
Exact width and height
Enter both dimensions to force the output canvas to those values. A different target ratio can stretch or squeeze the image.
No automatic crop mode
The general Image Resizer changes dimensions directly; it is not the same as the social tools that offer Fill and crop or Fit with background.
Same, JPG, PNG, or WebP output
Keep the source format or choose a different supported image format for the resized result.
Compression controls
JPG and WebP can use lossy compression settings. PNG output remains lossless.
Multiple images and ZIP
Resize several files in one session and download successful results individually or together.
Continue With Related Tools
Use the next tool only when it matches the next step in the file workflow.
Resize Image to 16:9
Use the fixed 1280×720 widescreen preset.
Resize Image to 9:16
Use the fixed 1080×1920 vertical preset.
Resize Image to 1:1
Use the fixed 1080×1080 square preset.
YouTube Thumbnail Resizer
Resize images to 1280×720 for YouTube thumbnails.
PRIVACY & RESPONSIBLE USE
Resizing Happens in Your Browser
The current Image Resizer decodes the source image, draws the requested pixel dimensions, and creates the result on your device.
See File Security & Processing and the Privacy Policy for broader site-level details.
Exact dimensions can change proportions
When both width and height are forced to a different aspect ratio, the image can look stretched or compressed.
Resizing cannot add true source detail
Making an image larger creates more pixels but does not recreate detail that was never present in the source.
Use authorized images
Changing image dimensions does not change copyright or licensing.
Copyright: Processing or converting a file does not grant permission to reproduce third-party material or bypass passwords, encryption, DRM, or document restrictions. See Copyright & Intellectual Property.
COMMON QUESTIONS
Frequently Asked Questions
Can I resize images online for free?
Yes. The current Image Resizer is free to use and does not require an account.
Which formats can I resize?
The current tool accepts JPG, PNG, and WebP images.
Can I keep the original aspect ratio?
Yes. Enter only one dimension and keep the aspect-ratio option enabled so the other dimension is calculated automatically.
What happens if I enter both width and height?
The current tool resizes to those exact values. If the target ratio differs from the source, the image proportions can change.
Can I choose the output format?
Yes. Use Same as original, JPG, PNG, or WebP output.
Can I resize several images at once?
Yes. Add multiple files and download the resized results individually or as a ZIP.
Are my images uploaded to a server for resizing?
The current resizing workflow runs in your browser.
Image Resizer
Resize images by width and height.