svg2pdf-py 1.1.0

Fast SVG to vector PDF conversion via typst/svg2pdf

svg2pdf-py

Fast, accurate SVG → PDF conversion for Python, powered by the svg2pdf Rust crate from Typst. Built with PyO3 and Maturin.

Unlike rasterization-based approaches, svg2pdf-py produces true vector PDFs — text stays selectable, paths stay sharp at any scale, and custom fonts are fully embedded.

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Features

• Vector-accurate SVG → PDF (no rasterization)
• Custom font support via usvg / fontdb
• Batch conversion for multi-page PDFs
• Exposes raw PDF chunks for embedding into existing documents
• Pre-built wheels for Windows, Linux, and macOS (Python ≥ 3.9)

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Installation

pip install svg2pdf-py

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Quick Start

import svg2pdf_py

# Load custom fonts
db = svg2pdf_py.FontDatabase()
db.load_font_file("/path/to/MyFont.ttf")
db.load_font_file("/path/to/MyFont-Bold.ttf")

# Convert SVG string → PDF bytes
svg_str = open("diagram.svg", encoding="utf-8").read()
pdf_bytes = svg2pdf_py.svg_to_pdf(svg_str, db)

open("diagram.pdf", "wb").write(pdf_bytes)

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API

FontDatabase

Manages fonts used during SVG rendering.

# Empty database
db = svg2pdf_py.FontDatabase()

# Pre-loaded with system fonts
db = svg2pdf_py.FontDatabase.system()

db.load_font_file("/path/to/font.ttf")   # load a single font file
db.load_fonts_dir("/path/to/fonts/")     # load all fonts in a directory
db.load_system_fonts()                   # add system fonts to existing db
len(db)                                  # number of loaded font faces

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ConversionOptions

Controls PDF output quality.

opts = svg2pdf_py.ConversionOptions(
    compress=True,      # deflate-compress streams (default: True)
    raster_scale=1.0,   # scale factor for rasterized elements (default: 1.0)
    embed_text=True,    # embed text as real PDF text, not outlines (default: True)
)

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svg_to_pdf

Convert a single SVG string to a standalone PDF.

pdf_bytes: bytes = svg2pdf_py.svg_to_pdf(
    svg_str,   # str — SVG content
    db,        # FontDatabase
    options,   # ConversionOptions (optional)
)

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svg_to_chunk

Convert a single SVG string to a raw PDF chunk (XObject), suitable for embedding into an existing PDF document.

chunk_bytes: bytes = svg2pdf_py.svg_to_chunk(
    svg_str,
    db,
    options,   # optional
)

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svg_pages_to_pdfs

Convert a list of SVG strings to individual PDF byte strings — one per page.

pages: list[bytes] = svg2pdf_py.svg_pages_to_pdfs(
    svg_strings,   # list[str]
    db,
    options,       # optional
)

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Multi-Page Example

Combine multiple SVGs into a single PDF using PyMuPDF:

import svg2pdf_py
import pymupdf

db = svg2pdf_py.FontDatabase()
db.load_fonts_dir("/path/to/fonts/")

svg_pages = [open(f"page{i}.svg").read() for i in range(1, 5)]
pdf_pages = svg2pdf_py.svg_pages_to_pdfs(svg_pages, db)

doc = pymupdf.open()
for pdf_bytes in pdf_pages:
    part = pymupdf.open("pdf", pdf_bytes)
    doc.insert_pdf(part)
    part.close()

doc.save("output.pdf", garbage=4, deflate=True)
doc.close()

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Credits

This package is a thin PyO3 binding over the excellent svg2pdf crate by Typst, which in turn uses usvg for SVG parsing and fontdb for font resolution.

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License

MIT