Image scales in Preview

When I open multiple images in Preview, they are all at different zoom levels. Some of them are at 155%, some of them are 86%, and so on. How do I make them all open at 100%?

Thanks

Go into Preview preferences and select the Images tab. Set the Default Image Size to 'Actual Size' and you're good. If you don't properly set the DPI in your images (usually for printing purposes) and just want them to appear at their actual 'pixel size'. make sure you uncheck 'Repesct image DPI for "actual size"'.

There are separate tabs for other file types (e.g. PDFs) and you can set them how you like

thread moved. not the right section.