There are sights like visualwatermark.com or makewatermark.com or if you want to do it on your phone you can just google free watermark apps... Or you could google how to watermark your photos for free :). Source: over 2 years ago

How large are your images? You can save a lot of space by using https://www.iloveimg.com/compress-image All the graphic assets that come with the augur occupy less storage space than what users have available, I compressed most of them using that website. Source: about 1 year ago

Just like in this tool you can choose to resize an image and then put padding in the areas to not stretch it. By doing this and making all images 1:1 ratio they will look nice in dynamic ads. Source: over 2 years ago

Bulk Resize Photos: Allows dragging and dropping of multiple images, setting max widths, converting pngs to jpgs, and a whole bunch of other actions that I used to have to do in Photoshop. I don't use the compression option here, only resizing. - Source: dev.to / over 2 years ago

Bulkresizephotos.com - compresses images to any file type/size you need and you can bulk upload a ton of photos at once, making it super simple for CMS work. Source: about 3 years ago

I found https://bulkresizephotos.com/ which is a lot easier and faster than doing them all manually. Source: about 3 years ago