How to use it
- Drop your images onto the box below.
- Enter a width, or switch to percentage to scale everything evenly.
- Press Process files and download the resized images.
Set one side and leave the other blank
With Keep aspect ratio on, filling in only the width lets the height follow so nothing is stretched. Filling in both treats them as a box to fit inside rather than exact dimensions, which is almost always what people actually want. Turn the option off if you genuinely need to force an exact size and do not mind distortion.
Sensible widths to aim for
A full-width image on a web page rarely needs to be wider than 1920 pixels, and an image inside an article is usually fine at 1200. Profile pictures and thumbnails seldom exceed 500. A modern phone photo is often 4000 pixels wide, so resizing before compressing is usually the larger saving of the two.
Enlarging is not recovery
Never enlarge smaller images is on by default because scaling a small picture up cannot invent detail that was not captured. The result looks soft rather than sharper. Leave the option on unless you specifically need a larger canvas.
Questions
Can I resize many images to the same width?
Yes. Drop them all in and set a width once. Each image keeps its own aspect ratio.
Does resizing also compress the file?
Fewer pixels means a smaller file, and the quality slider controls the encoding on top of that. Resizing is usually the bigger saving.
Is there a maximum size?
Very large images are scaled to fit what a browser canvas can hold, so the job completes instead of failing.