Why we built this
Good slide decks are some of the most under-archived artefacts in education. A well-made lecture deck encodes hours of teaching judgment — what to leave out, what order to introduce ideas in, where to pause for a worked example — but most decks are filed away on personal hard drives or buried inside larger course pages and effectively disappear once the semester ends. Slide Collection exists to make those decks findable: every presentation lives at a stable URL, is classified by subject and grade band, and links straight back to the original source so the contributor and license remain intact.
Where the decks come from
The catalogue is seeded from openly-licensed educational archives. Our primary source is the Internet Archive's presentations collection, which preserves thousands of slide decks contributed by educators, universities and open courseware projects. We query the Archive's stable JSON metadata API across a range of academic subject queries, deduplicate the results, and classify each deck against our own taxonomy of subjects and grade levels using keyword heuristics over the original title, description, and subject tags.
We do not host or rehost the original files. Each detail page embeds the upstream viewer and links back to the original archive entry, where the contributor, license, and downloadable file are available in full.
How the catalogue is organized
Two axes structure the catalogue. The first is subject — sixteen academic areas drawn from a fairly conventional university course catalogue, from mathematics and physics through literature, philosophy, and the arts. The second is grade level — five bands running from elementary classrooms through graduate seminars. Most decks sit cleanly in one cell of that grid; a few span several, and we make a best-effort guess based on vocabulary and framing.
Trending and Recent feeds cut across both axes. Trending is a straight popularity sort by upstream view count; Recent is a date sort using whatever upload date the original archive recorded. Neither feed is editorially curated.
Our editorial promise
Every link on every page leads to a real, fully-built page. There are no placeholder stubs, no "coming soon" notices, and no dead categories. If a subject or grade level appears in the navigation, it has presentations in it. If a deck appears in the index, it has a working detail page with substantive context, study guidance, and a link back to the source.
What Slide Collection is not
Slide Collection is not a presentation editor, a slide-hosting service, or a paid templates marketplace. It is a directory and a study companion. If you want to download a deck, follow the source link to the upstream archive; if you want to remix a deck, do so under its original license and credit the original creator.