Resize Image — Pixels, Percentage or Print Size
Change an image’s dimensions three ways: exact pixels, a percentage of the original, or a standard print size at 300 DPI. It all happens in your browser — your image never leaves your device.
Resize an Image Online — Pixels, Percent or Print Size
Different jobs ask for image sizes in different languages: a website wants “800 pixels wide”, a form wants the photo “half the size”, a print shop wants a passport photo at 35×45 mm. This resizer speaks all three. Pixels mode gives you exact control with an aspect lock so faces and logos never stretch; percentage mode scales the whole image up or down in one move; print mode produces standard sizes at a true 300 DPI, the resolution print shops expect.
How to use it
- Choose your image — it stays on your device; nothing is uploaded.
- Pick a mode: By pixels, By percentage, or Print size.
- Set your width and height, a scale, or a print size such as passport 35×45 mm or A4.
- Choose JPEG, PNG or WebP, tap Resize image, and download.
Practical notes
Shrinking an image always works cleanly. Enlarging is different: the tool can stretch the pixels you have, but it cannot invent detail that was never captured, so a tiny photo blown up to A4 will look soft in print. For profile pictures and web use that rarely matters; for a printed ID photo, start from the largest, sharpest original you have. PNG is the right output when the image has a transparent background or crisp text and lines; JPEG is smaller for photographs; WebP usually beats both on size where the destination accepts it.
Frequently asked questions
What does 300 DPI mean for a passport photo?
DPI is dots per inch — how many pixels are packed into each printed inch. A 35×45 mm passport photo at 300 DPI works out to 413×531 pixels, which is what this tool’s print mode produces, centre-cropped to the exact passport shape.
Why did my image change shape in print mode?
Print sizes have fixed proportions — a passport photo is taller than it is wide. If your image has different proportions, something has to give: print mode fills the frame and crops the overflow from the centre, exactly like a print shop would. If you need to choose which part survives the crop, use the passport photo maker, where you position the photo yourself.
Does resizing reduce the file size too?
Usually yes — fewer pixels means a smaller file. But the relationship is loose: a noisy photo at 800 px can outweigh a clean one at 1600 px. If a form limits the file in KB rather than pixels, use the image compressor, which targets an exact KB size.
Will resizing remove my photo’s transparency?
Only if you output JPEG, which has no transparency — transparent areas become white. Choose PNG or WebP output to keep transparency intact.