1.Pixabay: With more than 4.5 million high-quality pictures and video materials, it can easily cope with various design scenarios.

2. Photo Network: Provide hand-painted illustrations, posters, ppt templates, science and technology, cities, businesses, architecture, scenery, food, home, location, background and other exquisite picture design materials for download.

3. Nitu. Com: provides massive original materials, picture downloads, photographic works, design materials, video materials, ppt templates, PSD source files, vector pictures, AI, CDR, EPS and other high-definition picture downloads.