- Must be public domain (not copyrighted)
- JPEG Format (.jpg or .jpeg)
- Use medium compression when saving
- Must be 1920px wide by 1440px high resolution
- DPI does not matter
- Should be bout 400K +/- filesize when saved
- Please provide photo credit (name/organization)
We receive images from many sources. If you see an image which is copyrighted, please let us know so we can remove it.