Shutterstock: This is a very popular picture material library, with millions of high-quality pictures, videos and music materials to meet various needs.
Adobe Stock: This is a picture material library provided by Adobe, which contains millions of high-quality pictures, videos, music and illustrations.
Jusotu: This is a free picture material library, providing millions of high-quality picture materials, which can be used for commercial and non-commercial projects for free.
Pexels: This is another free picture material library, which provides millions of high-quality picture materials and can also be used for commercial and non-commercial projects for free.
Canva: This is an online graphic design tool, which provides a lot of picture materials, icons, templates and other resources, and can be used to make posters, business cards, social media pictures and so on.
These softwares have their own advantages and characteristics, and the specific choice can be decided according to their own needs and budgets.