1. The Noun Project
The Noun Project offers one of the biggest icon libraries available on the web, with over 3 million icons. Most of this site’s icons are available in SVG and PNG formats, and most of the icons available on this site are in black and white styles.
The site’s library is made up of icon files designed by a variety of independent designers. It’s a place where creators and creative professionals alike can collaborate to sell their designs and find a seemingly endless library of premium icons.
Price: Many icons are available for free with a Creative Commons license. Pro downloads are priced at $2.99 per icon, or you can a year’s subscription for $39.99
2. Icon Monstr
iconmonstr offers over 4,400 simple, black-and-white icons. Every icon on this site is available for free, and icon files come in such formats as SVG, AI, PSD and PNG. The files can be used for free and commercial purposes.
If you don’t want to browse through all 4,400+ icons available on the site, use the site’s search feature or browse its 313+ collections.
Price: Every icon is available for free.
3. Flat Icon
Flaticon is a subsidiary of Freepik. Its icon library contains over 3.5 million vector icons. It also has a premium service, which enables you to download up to 2,000 icons per day. The free plan requires you to give attribution to the authors of the icons you use while the premium version does not.
Icons come in PNG, SVG, EPS, PSD and BASE 64 formats. There are over 79,000 icon packs available for a variety of different purposes. There’s even a free pattern generator to create repeating patterns from your choice of icons, as well as a Google app to integrate icons into Google Docs and Google Slides.
Price: Limited free plan & premium plans from $11.99 a month with a discount if you pay annually
Icons8 offers a collection of over 145,000 icons. All of these icons are available for free, but you’ll need to pay extra if you want premium features. If you don’t have a premium account, you must credit and link to the Icons8 site.
Free icon files come in PNG formats and are available in dimensions up to 100×100. Premium icons are available in SVG, large PNG, and other formats.
One handy feature of Icons 8 is that you can customize icons to change the color or add text or overlays before you download. You can also request new icons and the site’s designers draw 20 new icons a day based on the top requests.
Price: Free with limited features. Per icon cost is $5, and the lifetime membership is $249, as of May 2016.
5. Icon Finder
Iconfinder is one of the most popular icon resources on the net. It offers almost 5 million icons in a wide range of styles and categories. The way you use and pay for this site’s icons varies. Individual icons are available for free or a small fee, usually $1. You can also sign up for the shop’s premium plans.
Icon files are available in SVG, PNG, ICO, ICNS, and Adobe Illustrator formats, and dimensions range between 16×16 to 512×512. You can also work with some of the site’s best designers if you can’t find something you like or simply want custom icons designed especially for you and your brand.
Price: Some icon packs are available for free. Individual premium icons start from $2. Premium icon packs range from $9 – $35. Premium membership plans start from $9 a month for 10 downloads a month.