Site Log

What's new and what's changed — reverse chronological order.

2026-03-23 08:43 UTC

  • Fix search dead-ends on mobile and add sticky section navigator
  • Remove broken YouTube video embed from Bio HL guide
  • Add feedback button with floating FAB, modal form, and GitHub Issues API
  • Add curated video sections to Math AA HL, Chemistry SL, and History SL guides
  • Convert Chemistry SL guide to .mdx to fix KaTeX in HTML blocks
  • Add collapsible video sections to guides with curated YouTube embeds
  • Add tap-to-expand lightbox for SVG diagrams on mobile and tablet
  • Add "Made for and by IB students" hero message and contributor credits in footer

2026-03-22 18:28 UTC

  • New: Navigation reorganized — subjects now grouped under IB and AP dropdown menus with breadcrumb trails
  • New: PDF exports now include an auto-generated table of contents
  • Chemistry SL: Added back the nucleophilic substitution section, clearly marked as HL-only so SL students know what's examinable
  • Biology HL: Added separate photosynthesis vs respiration comparison diagram
  • Math AA HL: Added counter-clockwise angle convention note with unit circle visual
  • Biology HL: Corrected several factual details in process descriptions and enzyme names
  • New: Google Analytics added for usage tracking (anonymized)
  • Fixed: MCQ answer options no longer display on a single line
  • Math AA HL: Added formula booklet integration — key IB formulas shown alongside relevant content
  • Chemistry SL: Added 40 new IB-style practice questions with worked solutions
  • Chemistry SL: Added esterification section and expanded homologous series coverage
  • Biology HL: Added 10 detailed SVG diagrams covering cell structure, chloroplast, ETC, and more
  • Launched with 3 verified IB study guides: Biology HL, Math AA HL, and Chemistry SL — all with downloadable PDFs