How do I reduce the file size of my jpeg files.

In Photos select the image. Press cmd and d buttons this will create a duplicate image.

Select the copied picture & double click.

(You may Click 'Edit' in the top right corner if you wish to make some colour changes etc.

Save changes)

Making sure you have selected the image you want use,

Go to 'File' move down to 'Export' follow the triangle to 'export 1 item' (if you have a few photos selected it will display the number of photos)

In the Dialog box you have the option of setting the desired 'Photo Kind' (JPEG, Tiff [for commercial print] & PNG)

In the size Dropdown menu you can select Small, Medium, Large, Full Size or Custom (There you can set the pixel width or height as desired)

Press export or return, Find & select the folder where you would like to save the image.

Photos output images as RGB colour

For Newspapers CYMK colour is required.

I suggest you ask at the newspaper, what kind of images can they use. They may be willing to do the colour changes for you.

Alternatively select you image then via File, Export the image at 'Full size' and edit in another photo editing app.

Export the images out of Photos first. This will create copies, leaving the originals in Photos. Then use Preview to resize them.

There are many ways

select the photos in Photos and export (file Menu ==> export)

you can crop the photos in the Photos application to make them smaller

You can use the quality attribute in the export window to increase the compression and thereby decrease file size

You can use the size attribute in the export window to reduce the pixel size and thereby decrease file size

If these controls are not visible in the export window click on the v to the right of JPEG to open the full window

LN

Thank you so much for reminding me to click the full window sign for more choices! I just changed to El Capitan and Photos. The familiar size choices were not visible...creature of habit that I am AND Apple, who does not say much about small changes, left me looking and looking, almost downloading a third party app to resize my photos as in previous systems!

I thought the "fuller" window was for other choices such as png and tiff...

I am sincerely grateful!

You are welcome -- glad to assist

LN