I like Irfanview for PC. Here's the author's own website.
https://www.irfanview.com/
In addition to Resize, sometimes Image / Auto-adjust Colors can make a boring picture sparkle.
And Edit / Crop. Put a box around the area you want, hit this, and the area in the box is a new picture. Save it, to your desktop or somewhere you can find it again. Very useful to emphasize a part of a picture, or if you wish you had zoomed in your camera.
Shift / printscreen on a PC keyboard copies the screen to 'Clipboard'. Then open Irfanview, Edit / Paste (which brings in the clipboard picture), Crop, and save your screenprint as a .jpg picture.
Irfanview is not just an editor, it is also the fastest photo viewer. Use it to open the first picture in a folder. Then Spacebar or PageDown will jump through showing each picture in the folder much faster than anything else would.
Enjoy!