An image resizer for Mac, built into the right-click menu.

In Preview, choose Tools › Adjust Size, then enter a width and a height or choose a size from Fit into; select Scale proportionally to keep the shape. Preview saves changes automatically, so duplicate the picture first if you want to keep the original.

With Ricly, select the pictures, right-click once and set the size once: every copy follows it. Built in, Preview resizes several at once if you open them in one window and select them in the sidebar, and Automator’s Scale Images action resizes by the longer side in pixels or by a percentage.

Yes, macOS includes sips. To fit a picture in 1200 pixels on its longer side, run sips -Z 1200 photo.jpg --out photo-1200.jpg in the Terminal.

Pick 25, 50 or 75 %, choose Custom and type a width or a height in pixels, or choose Under… and a weight. The other side follows the ratio unless you unlink the two. Ricly remembers the mode you used last, and any limit you type.

Yes. Choose Under… and a limit: the panel offers the ones below the picture’s current weight, from 500 KB to 10 MB, or Custom… to type your own, like 3 MB or 300 KB. Ricly keeps the size if it fits at JPEG quality 0.85, otherwise the largest size that does, and writes it once. If a picture cannot get under the limit without shrinking to almost nothing, it says so and points you to Compress Image.

Need it under a size? Quick Resize, Under…: for a site that refuses anything heavier, it changes the dimensions only if it has to. Same dimensions, lighter file, no size target? Compress Image, in the same menu.

Yes. Unlink the two fields and type both; the panel opens up on the picture. Pick Crop (the default, framed on the subject when Ricly finds one), Fit (the whole picture, with margins) or Stretch, and in Crop drag and zoom to choose exactly what is kept. Link them again to keep the proportions.

Preview resizes, yes: Tools, Adjust Size. It shows the resulting file size once you have picked the dimensions, so for a weight limit you guess, check and guess again. Ricly starts from the limit and hands you the file. Apple gives you the settings; Ricly gives you the result.

If you ask for a larger size, yes, and the panel warns you first that it will look softer: scaling up adds pixels, not detail. For a sharp enlargement, that is Upscale Image, in the same menu. A crop, though, is never enlarged: it is saved at the pixels you kept.

JPG, JPEG, PNG, HEIC, WebP, TIFF and BMP go in. A PNG comes out as a PNG, lossless; everything else comes out as a JPEG at quality 0.92, or 0.85 when you resize under a weight.

Yes. Camera, lens, date and orientation are carried into the copy. If you want them gone, that is Strip Metadata, in the same menu.

Beside the original, with the new dimensions in the name — Portrait [1200x1500].jpg. Your original is not modified, moved or deleted.

Select the files and right-click: the menu reads Quick Resize (20 files). You set the size once — a percentage or a width — and it applies to every picture.