Retrieve image ids for TF2 skins.
This API has no cooldown.
These were scraped by us from SCM. We do not update this list much, if at all. One-time copy/paste usage by a developer should be sufficient. IDs should be prefixed with "https://steamcommunity-a.akamaihd.net/economy/image/". The URL accepts a suffix at the end for an alternative size. We recommend /128x128 for small images, then downscaling with CSS (or another dynamic mechanism), so the images remain crisp on high dpi screens.