静态图标

Iconfont-阿里巴巴矢量图标库 https://www.iconfont.cn/
图标下载，ICON(SVG/PNG/ICO/ICNS)图标搜索下载 - Easyicon https://www.easyicon.net/

动态图标

Illustrations | unDraw https://undraw.co/illustrations
loading.io - Your SVG + GIF + PNG Ajax Loading Icons and Animation Generator https://loading.io/
Illustration Gallery by ManyPixels | Open-Source Editable Illustrations https://www.manypixels.co/gallery/