Faster, steadier public pages

Public lesson and activity pages stay fast when a lot of people are browsing at once, shared links show a polished preview card, and the homepage loads cleanly without flicker.

• ImprovedPublic lesson and activity pages stay fast when a lot of people are browsing at once.
• ImprovedSharing a link to The PE Dept shows a polished preview card with the right image.
• ImprovedThe homepage loads cleanly, without content shifting as it appears.