Steam Trading Cards are virtual cards earned by playing games on Steam that can be combined into game badges.

We've made some changes to badge crafting and improvements to inventory page performance. Here's what's changed:

• Sale badges remain craftable after cards expire, provided you had enough cards in your inventory when the cards expired. If you forgot to craft at the end of a past sale, now's your chance!
  
• When crafting a badge, you can now craft multiple levels at once.
  
• The mobile view of the inventory page should load much faster.
  
• The find-as-you-type filter for inventory should perform better.

• In general large inventories should load much faster when first visiting the inventory page.
  
• Results for the find-as-you-type filter should appear immediately with more results appearing as inventory items load in the background.
  
• When turning items into gems or selling items on the market, instead of automatically reloading, the used items will be grayed out. When you're done, there's a button to refresh the inventory with the results. This makes it a bit faster when turning multiple items in to gems.

• Crafting badges from past sales won't drop coupons, sale cards for other sales, or any of the sale-specific items they dropped during the sale (like Salien items).
  
• Crafting multiple levels at a time is limited to 100 at a time. When crafting more than 5 levels at a time, the animation will only show 5 sets of cards. The results screen will still show all the items obtained.