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Page Limit for Technical Drawings¶

WERK24 helps protect its platform partners by setting default limits on the number of pages processed in multi-page documents containing technical drawings. This prevents the risk of excessive processing costs from documents with hundreds of pages. By default, WERK24 processes only the first page of each document.

However, you can adjust this limit using the max_pages parameter in the read_drawing function. Currently, WERK24 supports processing up to the first 5 pages of a document.

Each W24TechreadMessage includes the page_number attribute, allowing you to track which page is being processed.

How to Specify the `max_pages` Parameter¶

You can specify the number of pages to process by setting the max_pages parameter in the read_drawing function.

Specifying the `max_pages`¶

Python

from werk24 import Hook, W24AskPageThumbnail
from werk24.models.techread import W24TechreadMessage
from werk24.utils import w24_read_sync

# define a function to read a file and return it as bytes
from . import get_drawing_bytes


def recv_thumbnail(message: W24TechreadMessage) -> None:
    """ Store the Thumbnail locally
    """
    if not message.is_successful:
        return

    page_number = message.page_number
    with open(f"page_thumbnail-{page_number}.png", "wb+") as fid:
        fid.write(message.payload_bytes)


if __name__ == "__main__":

    # get your drawing bytes from a file or buffer
    drawing_bytes = get_drawing_bytes()

    # define what information you want to receive from the API
    # and what shall be done when the info is available.
    hooks = [Hook(ask=W24AskPageThumbnail(), function=recv_thumbnail)]

    # submit the request to the Werk24 API
    w24_read_sync(drawing_bytes, hooks, max_pages=5)