Icons8 is an online library of 300k+ icons in 38 styles.
All of the icons are available in multiple formats (PNG, SVG, PDF). An online icons editor allows changing icon colors, adding text or elements, etc.
If you want to learn more about our icon library, here are some articles for you:
How and where can I use your icons?
Can I download a pack of icons/illustrations at once?
Can I edit an icon on your website?
Can I add icons to a collection?
Can I recolor a collection of icons?
Where can I find my collections?
Can I add edited icons to my collection?
Where can I find the icons I’ve downloaded?
Can I share a collection with my teammate?
If I download the same icon in multiple formats/sizes, would that count as multiple downloads?
How does the icon limit work with collections?
What is Line Awesome? How can I use it?
How to use Line Awesome in Photoshop
How do I add an icon to my HTML code?
Can I use an icon for my logo?
What is the maximum icon size in pixels?
I have downloaded icons, but they didn’t appear in my Downloads
Where can I check how many downloads I have?
Do you have icons in the ICO format?
If you have any questions left or just want to share your thoughts, feel free to start a conversation.
Thanks for creating such an extremely cozy atmosphere for all user levels, it makes me feel like home. I came across icons8 just a couple of hours ago and find myself reading the hell out of your FAQ and this community thing, so it feels like we’ve known each other for ages 
YOU ROCK!!!