There are many sites offering royalty free photos, here is a loooooong list to choose from...
I have bolded my personal favourites:
Ablestock
www.ablestock.com
Alamy
www.alamy.com
Alaska Stock
www.alaskastock.com
Big Stock Photo
www.bigstockphoto.com
Corbis
www.corbis.com
Creatas
www.creatas.com
Crestock
www.crestock.com
Digital Juice
www.digitaljuice.com
Dreams Time
www.dreamstime.com
Fotolia
Foto Search
www.fotosearch.co.uk
fStop Images
www.fstopimages.com
Getty Images
www.gettyimages.com
Glasshouse Images
www.glasshouseimages.com
Image Vortex
www.imagevortex.com
Inmagine
www.inmagine.com
iStock Photo
Jupiter Images
www.jupiterimages.com
Laughing Stock
www.laughing-stock.com
Media Bakery
www.mediabakery.com
Panorama Stock
www.panoramastock.com
Photos.com
www.photos.com
Photo Alto
www.photoalto.com
Photocase
www.photocase.com
Shutter Stock
www.shutterstock.com
Stockphoto
www.stockphoto.com
SuperStock
www.superstock.com
Think Stock
www.thinkstock.com
Feel free to add more....
Yes, you are right. I have used pixels it is a very good site. I will also check the other two that you have mentioned.Hey, there is some websites with free photos:
https://www.pexels.com/
https://picjumbo.com/
https://pixabay.com/
images on flickr are also subject to copyright.You can also try to https://www.flickr.com/
Or sometimes they ask for fee for their photos.images on flickr are also subject to copyright.
You'd need to ask permission from the photographer.
I've done this in the past and mostly good response and people have no issues, but you need to get the permission.
Depends on budget.Or maybe I am wrong?
tineye and google reverse image can help with the obvious checks but I can't think of one off the top of my head for a deep dive.Is there any tool to check if the image I'm using is free?