How to Use Common Rendering Utilities in Python
Overview
RenderModelBuilder, PdfWriter, and RasterRenderer are the low-level rendering
components shared across all Aspose.Page FOSS conversion pipelines. Use RenderModelBuilder
to construct a RenderDocument programmatically, then pass it to PdfWriter or
RasterRenderer to produce PDF bytes or a RasterSurface respectively.
Build a RenderDocument
from aspose.page.render.model import RenderModelBuilder
builder = RenderModelBuilder()
builder.begin_page(595, 842)
builder.end_page()
doc = builder.document()Write to PDF
from pathlib import Path
from aspose.page.render.model import RenderModelBuilder
from aspose.page.pdf.writer import PdfWriter
from aspose.page.pdf.metadata import PdfMetadata
builder = RenderModelBuilder()
builder.begin_page(595, 842)
builder.end_page()
doc = builder.document()
metadata = PdfMetadata(
title="Doc",
creator="App",
producer="Aspose.Page FOSS for Python",
creation_date="D:20260609000000",
mod_date="D:20260609000000",
trapped=False,
)
Path("output.pdf").write_bytes(PdfWriter(metadata).write(doc))Render to RasterSurface
from aspose.page.render.model import RenderModelBuilder
from aspose.page.image.raster_renderer import RasterRenderer
builder = RenderModelBuilder()
builder.begin_page(400, 300)
builder.end_page()
doc = builder.document()
renderer = RasterRenderer()
surface = renderer.render(doc, page_index=0)
print(surface.width, surface.height)