Before you thematic set – Question Vector Free Icon Set. It is great for sites, applications or presentations. To use the graphics, simply download the archive. The license allows you to use icons for personal or commercial purposes. Read more on the license page: graphicsurf.comlicense/” target=”_blank” rel=”nofollow noopener noreferrer”>graphicsurf.comlicense/ Graphics is vector. You can change the size without losing quality. The archive contains the following formats: AI, EPS, PNG with a resolution of 256×256.