Image Resizer
Resize images by pixels or percentage, preserve aspect ratio, preview, and download.
About the tool
What it does and what to expect
About the tool
What it does and what to expect
Create exact image dimensions
Content creators, developers, and marketplace sellers resize images to meet upload limits, thumbnail dimensions, or layout requirements. Aspect-ratio locking prevents accidental stretching while width and height are adjusted.
A worked example
A 4000 × 3000 photo resized to 1200 px wide with aspect ratio preserved becomes 1200 × 900. The PNG preview confirms the dimensions before download.
How it works
A simple, local workflow
How it works
A simple, local workflow
- 1Select or drop a JPG, PNG, or WebP image, then enter the required width or height.
- 2When aspect ratio is locked, changing one dimension recalculates the other from the original proportions.
- 3The browser redraws the image at the new pixel size for preview and PNG download.
FAQs
Common questions
FAQs
Common questions
What does preserve aspect ratio mean?
It keeps the original width-to-height proportion so the resized image is not stretched or squashed.
Will making an image larger improve quality?
No. Upscaling creates more pixels by interpolation but cannot restore detail that was not present in the source.
How do I resize an image to a specific width?
Keep aspect ratio enabled, enter the target width, and the matching height is calculated automatically.
Why is the downloaded file PNG?
The resizer exports PNG to retain a predictable high-quality result; file size may be larger than a compressed JPG or WebP.
Documents
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Comments & feedback
Help make this tool better
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