Highcharts Logo Lab
Use square for square layouts, or when greater readability is required.
Use outlined for the logo to stand out in a grayscale print, for print on clothes etc.
Sets white text/logo stroke for use on a darker background.
Use the cropped version when aligning the logo to something, and when used on the same background as the logo. Use tight or padded when the logo is in a frame or on a different coloured background.
Use bolder text for better legibility, for example in a mixed layout with other logos, when the logo is small etc.
Use SVG or PDF whenever possible. They are lossless and scalable, so pixels don't appear when the logo is scaled up. Use PNG when the others are not technically possible due to software restraints.