Result will appear here.
Scale an image up or down by a percentage of its original size — with a no-upscale option, entirely in your browser.
Below 100 shrinks the image, above 100 enlarges it. Both sides scale by the same amount so proportions are preserved.
Enlarging past 100% loses sharpness; turn on “do not upscale” to cap the output at the original size.
Keep the input format or convert to JPG, PNG, or WebP. Quality applies to JPG and WebP only. JPG fills transparency with the background color.
It reports the final pixel dimensions and file size so you know exactly what the percentage produced.
Resize Image by Percentage scales an image relative to its current size instead of to fixed pixel dimensions. Enter 50% to halve each side, 200% to double it, or any value in between, and the proportions are always kept.
Output can stay the same format as the input or convert to JPG, PNG, or WebP. The quality slider applies to JPG and WebP; PNG export ignores it. JPG fills any transparency with the background color you choose.
Turn on “do not upscale” so a percentage above 100% will not enlarge the image past its original size, and read the result panel for the final pixel dimensions and the new file size.
Scale by a percentage so the image keeps its exact proportions without working out pixel dimensions yourself.
Prevent a percentage above 100% from enlarging and softening a small image.
Keep the original format or convert to JPG, PNG, or WebP, with an honest note about the PNG quality slider.
The image is scaled in your browser and never uploaded to a server.
Halve or quarter an image with one percentage instead of calculating new pixel sizes.
Scale a set of images to the same percentage so they shrink consistently.
Scale a large photo down by percentage to make it lighter to upload or email.
Scale an image from a phone, tablet, or computer browser with the file staying local.
No. The image is scaled in your browser using the HTML canvas and is never uploaded to imgtoolsbase or any server.
The percentage is applied to both the width and the height, so the image keeps its proportions. 50% halves each side; 200% doubles each side.
Yes. Turn on “do not upscale” and any percentage above 100% is capped at the original size to avoid blurring.
Keep the same format as the input or convert to JPG, PNG, or WebP. Quality applies to JPG and WebP; PNG export ignores the quality slider.
It shows the original dimensions, the scaled percentage, the final pixel dimensions, the output format, and the new file size.
Tools that pair well with Resize Image by Percentage.