For anyone developing games, there is always a huge demand of high-quality graphics for the characters, objects, backgrounds and more.
Game-Icons is a project providing 900+ free icons (and growing) to be used for games but they can also be used for any other projects.
The items are in .SVG and .PNG formats, they are very well-categorized and can be used in commercial projects as well.
Everybody loves high-quality and free icons with a massive number of items and Gemicon is an exciting set that will surely get your love.
This set consists of 600+ icons that are available in both PNG and PSD.
It is offered in multiple sizes (16*16px, 32*32px, 64*64px) and PSD version is created as a shape layer so that it can scale.
Gemicon is completely free to be used in both personal + commercial projects.
Endless Icons is a website which regularly features a new icon every few days.
All the icons are black and white colored and there are sketchy/hand-drawn ones as well.
It features icons of charts, foods, sports and various other elements (kinda random).
They are all free-to-use in personal + commercial projects and come in PNG format.
There are various solutions exist for compressing and minimizing the size of images (like Smush.it, PNGGauntlet, punypng, Kraken.io and more).
Here is another good one: TinyPNG that only works with PNG files, shrinks them -nearly- without loss that an eye can see and by keeping the transparency.
It works by drag 'n' drop uploading the images to be minimized to the web interface and auto-generates the compressed ones.
Using TinyPNG, it is easily possible to get 50%+ smaller sized images as they are converted to 8-bit PNGs (rather than 24bit) by using smart techniques.
Codrops is sharing a beautiful freebie that web designers/developers will like so much.
It is a pack of 120 slick icons named "Application Icon Set" where the set comes in 3 sizes: 16*16px, 32*32px and 64*64px.
There are 3 formats provided: transparent PNG, PSD and CSH (custom shape) which is great as we can scale them as needed.
As the name suggests, the icon set is focused on apps and includes items that are frequently used in them.
Modern UI Icons (also named Windows Phone Icon Pack) is a set of 750+ very beautifully designed icons.
The icons are created with Windows Phone and Windows 8 developers in mind, however, they can fit very well to any web/mobile/desktop project.
This set was featured at WRD before when there was ~140 icons but it has grew so much, moved into a new domain and deserves a 2nd shot.
They are designed with Expression Design and comes with 48*48px PNG (light and dark), .design and .XAML versions.
It includes many items from actions to filetypes, weather, charts and much more.
IconShock, the well-known icon design company, is sharing a very nice set of free user icons.
The set includes 100 items in different combinations, single users (male/female) and groups of users with different designs.
They are offered in multiple versions: iPhone, Android, Windows and colored. And, the items are packed in PNG + PSD files.
Also, a vector version (.AI) is included for maximum customization.
And, if you are in search for for more freebies, check this site for free vector.
iconmonstr is a free set of mono-colored and very simplistic yet beautiful icons.
The set includes 600+ items and it is possible to find multiple variations for almost each element.
Icons are mostly focused for web apps as most of them are actions, charts, badges or social networking-related.
They are available as PNG + SVG files and completely free to be used in free + commercial projects.
P.S. The only bad part is that the set is not offered as a single download pack but you have to browse pages to view/download each of them.
There is never too much icons and new, high-quality sets are always welcome for web designers/developers.
Koloria is a fresh set of pixel-perfect icons that includes items like files, file types, folders, actions, charts, media player controls and more.
The set consists of 160+ items in .PNG format which are sized 32*32px.
They are completely free to be used in any type of projects (free or commercial).
Many projects need high quality file icons, whether it is a web application or a simple website that may be offering downloads of files. Visualizing the file types help the user quickly understand what a file or link is about.
File Type Icons is a free set of slick icons that features 20 of the most popular file types including image, PDF, Word, Excel, text, PSD, HTML,CSS and more.
The icons come in 2 formats: PNG (128*128px) and well-layered PSD files.
P.S. The download of the icons require a free membership to the e-mail list of the website.