Automation library · Documents and files

Generate structured exams from PDFs with OpenAI and HTML

Started by another system calling it, and works across Telegram. It hands the judgement calls to OpenAI. 16 steps, 2 branches: a working afternoon to understand properly.

MediumCalls a model: OpenAI

Download free
16 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 3Model 1Logic 7Service 5

The steps in the order they run, from what starts it.

  1. 1WebhookWebhookStarts it
  2. 2Validate Parameter & PDFCodeLogic
  3. 3Condition ValidIfLogic
  4. 4Extract from FileExtract From FileService
  5. 5Respond Valid ParameterRespond To WebhookStarts it
  6. 6Clean TextCodeLogic
  7. 7Length Estimation LayerCodeLogic
  8. 8Validate Token > 8.000IfLogic
  9. 9Respond to WebhookRespond To WebhookStarts it
  10. 10Message a modelOpen AiModel
  11. 11Parse JSONCodeLogic
  12. 12Format Exam TextCodeLogic
  13. 13Convert HTML to PDF - ExamHtmlcsstopdfService
  14. 14Convert HTML to PDF - AnswerHtmlcsstopdfService
  15. 15Send a text messageTelegramService
  16. 16Send a text message1TelegramService

How it's built

Starts on
Another system calling it
Steps
16, with 2 branches
Size
Medium: a working afternoon
Connects to
Telegram
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Telegram account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 16 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 16 steps before you point it at anything that matters.