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From your own material

Turn a PDF into a course you can study from.

Slides, a textbook chapter, a compliance deck, a folder of lecture notes. Upload it and get an ordered path of lessons written from what is actually in it — with practice built from the same pages, and a plan to get through it.

Upload somethingSee what a lesson looks like
Your own material

Drop anything in.

It actually teaches from it. A semester of slides, the company handbook, lecture subtitles, a stack of links — BiliMind pulls them apart and weaves the passages that matter into your lessons. You study the syllabus you’ll be examined on, not a generic internet average.

Sources are verified before you see them. Dead links don’t ship. Made-up citations don’t exist here.

What happens to the file

Four steps, and none of them is summarise.

A summary of your PDF is a shorter PDF. What you want is the thing that teaches you what is in it and then checks whether it worked.

  • 1 · It reads the file, not the filename

    Text is extracted with its structure intact — headings, tables, captions, the order things were in. A slide deck keeps the relationship between a slide and its notes. A PDF with no text layer at all is refused straight away, with the reason, rather than quietly producing a course about nothing.

  • 2 · It splits it into what it teaches

    Your document is not a syllabus, and it is not treated as one. The material is broken into the ideas it contains, which are then ordered by what depends on what — so a course out of chapter 7 can start before chapter 1 if that is the honest prerequisite order.

  • 3 · It writes lessons grounded in your text

    This is the part that matters for accuracy. Each lesson is written against the passages it came from rather than from what a model remembers about the subject, so a course from your compliance deck teaches your policy, not the industry average.

  • 4 · It builds the practice from the same source

    Questions come out of the material, so they test what your document says — which is what makes a course from a textbook chapter usable for the exam on that chapter, and a course from a manual usable on the job.

What it takes

Not just PDFs.

Anything a course could reasonably be built out of, including the zip file of a whole module and the notes you typed on your phone.

  • Documents

    PDF, Word, PowerPoint, EPUB, plain text, Markdown, rich text and CSV or spreadsheet files.

  • Links and pages

    Paste a URL and the readable article is pulled out — no navigation, no cookie banner, no sidebar.

  • Video and audio

    Subtitle and transcript files, so a recorded lecture or a conference talk becomes a course you can be tested on.

  • Images — with a caveat

    A photographed page or whiteboard is stored and can hang beside a lesson, but there is no OCR here: it asks you to type what the picture says. Told up front, not discovered after the course is built.

  • Archives

    A zip of a whole module — thirty files at once instead of thirty uploads.

  • Just typing

    Paste your own notes straight in. Messy is fine; the structure is what gets rebuilt.

Checked, not just shown

Practice that checks your work.

A chat tells you “great answer!” every time. Here a written answer is marked against a rubric written first, code runs against real tests, and a speaking drill hears what actually came out of your mouth.

  • 9question types, all graded
  • 4live code runtimes
01You write · rubric grading

A rubric marks it, line by line.

7/8Check yourselfMark complete
Check yourself
2Short answerMarked by AI1 attempt

Your shot tastes sharp and sour. What went wrong, and what would you change?

Sour means the water rushed through before the sweetness dissolved. More contact fixes it: grind finer. Bitter is the opposite — go coarser.
24 words
Submit
Passed
80 / 100 · pass mark 70

You tied the sourness to the water leaving too soon and named the right lever. You didn’t say why a finer grind slows it down.

Rubric
Explains the cause· weight 0.590%
Proposes a specific fix· weight 0.570%
Try a different answer
02You code · it runs it

It runs your code. The tests decide.

5/8ExerciseMark complete
Exercise3 checksPYTHON

total() must refuse a negative price. Make all three cases pass.

Write the functionpython · sandbox · 5sready
1def total(prices):2    """Sum a cart."""3    if any(p < 0 for p in prices):4        raise ValueError("negative")5    return sum(prices)
  • returns the right totalinput [3, 1, 5] → 9
  • handles an empty cartinput [] → 0
  • rejects a negative priceinput [3, -1, 5] → ValueError
Run again3/3 passing · 38ms
03You talk · it talks back

It hears you, and coaches the slip.

4/7Say itMark complete
Say it

At the ticket desk in Madrid. Say each one out loud.

¿Dónde está la estación de tren?

Where is the train station?

/ˈdon.de esˈta la es.taˈθjon de tren/

Speak
100%heard: “dónde está la estación de tren”
¿Dóndeestálaestacióndetren?

That’s the one: es-TÁ, “is”. Next phrase.

Questions

Questions about uploading material.

The six we hear most. The intro film answers most of them in a minute and a half.

How large a PDF can I upload, and how many?

On the free plan: 20 MB per file, 100 MB of storage in total, up to 200 files. On Pro: 50 MB per file, 2 GB in total, up to 2,000 files. A text-based PDF of a few hundred pages is usually two or three megabytes, so a whole textbook chapter — or a whole textbook — normally fits well inside the free limit; it is scans and image-heavy decks that get large. A zip archive counts as one upload while carrying as many files as you like.

Is the course actually built from my document, or does it just use the topic?

From the document. Lessons are written against the specific passages they came from, and that grounding is the reason to use this mode: it is how a course teaches your company policy rather than a generic version of it, and how a course from chapter 7 covers what chapter 7 says. Where your material is silent on something the path needs, the lesson says it is filling a gap rather than pretending the source covered it.

Can I combine several files into one course?

Yes — that is the usual case. Upload the slide deck, the reading list and your own lecture notes together and you get one course built across all of them, with the overlaps merged rather than repeated. You can also attach material to a course that already exists and then regenerate a lesson so it takes the new source into account.

What happens to my files? Are they used to train a model?

No. Your uploads are stored for you, used to build your course, and never used as training data. You can delete a material at any time, and deleting it removes the extracted text with it. If you would rather not have files stored at all, you can paste text directly instead.

Can it handle a scanned book or photographed pages?

Not directly, and it says so immediately rather than half-trying. There is no OCR in BiliMind: a PDF with no text layer is refused on upload with that as the stated reason, and an uploaded image asks you to type or paste what it says, after which it is treated as text like anything else. The reason it works this way is that a silent partial read is the worse failure — you would get a course built around the one chapter that happened to have a text layer and no indication that the rest was dropped. If your source is a photocopy, run it through any OCR tool first and upload the result.

Does it work for non-English material?

Yes, in 20 languages, and the course is generated and taught in the language rather than translated into it — so the explanations read as though they were written in that language, because they were. You can also upload material in one language and ask for the course in another.

Free to start · no card

Learn anything. Finish it.

27 lesson formats · 20 languages · web, iOS, Android and Telegram
The intro · 1:25