Svglib is a Python library for reading SVG_ files and converting them (to a reasonable degree) to other formats using the ReportLab_ Open Source toolkit.

Used as a package you can read existing SVG files and convert them into ReportLab Drawing objects that can be used in a variety of contexts, e.g. as ReportLab Platypus Flowable objects or in RML_. As a command-line tool it converts SVG files into PDF ones (but adding other output formats like bitmap or EPS is really easy and will be better supported, soon).

Tests include a huge W3C SVG test suite_ plus ca. 200 flags from Wikipedia_ and some selected symbols from Wikipedia_ (with increasingly less pointing to missing features).

Features

convert SVG_ files into ReportLab_ Graphics Drawing objects
handle plain or compressed SVG files (.svg and .svgz)
allow patterns for output files on command-line
install a Python package named svglib
install a Python command-line script named svg2pdf
provide a PyTest_ test suite with over 90% code coverage
test entire W3C SVG test suite_ after pulling from the internet
test all SVG flags from Wikipedia_ after pulling from the internet
test selected SVG symbols from Wikipedia_ after pulling from the net
support Python 3.9+ and PyPy3

Known limitations

@import rules in stylesheets are ignored. CSS is supported, but the range of supported attributes is still limited
clipping is limited to single paths, no mask support
color gradients are not supported (limitation of reportlab)
SVG ForeignObject elements are not supported.

Examples

You can use svglib as a Python package e.g. like in the following interactive Python session:

.. code:: python

>>> from svglib.svglib import svg2rlg
>>> from reportlab.graphics import renderPDF, renderPM
>>>
>>> drawing = svg2rlg("file.svg")
>>> renderPDF.drawToFile(drawing, "file.pdf")
>>> renderPM.drawToFile(drawing, "file.png", fmt="PNG")

Note that the second parameter of drawToFile can be any Python file object_, like a BytesIO buffer if you don't want the result to be written on disk for example.

In addition a script named svg2pdf can be used more easily from the system command-line. Here is the output from svg2pdf -h::

usage: svg2pdf [-h] [-v] [-o PATH_PAT] [PATH [PATH ...]]

svg2pdf v. x.x.x
A converter from SVG to PDF (via ReportLab Graphics)

positional arguments:
  PATH                  Input SVG file path with extension .svg or .svgz.

optional arguments:
  -h, --help            show this help message and exit
  -v, --version         Print version number and exit.
  -o PATH_PAT, --output PATH_PAT
                        Set output path (incl. the placeholders: dirname,
                        basename,base, ext, now) in both, %(name)s and {name}
                        notations.

examples:
  # convert path/file.svg to path/file.pdf
  svg2pdf path/file.svg

  # convert file1.svg to file1.pdf and file2.svgz to file2.pdf
  svg2pdf file1.svg file2.svgz

  # convert file.svg to out.pdf
  svg2pdf -o out.pdf file.svg

  # convert all SVG files in path/ to PDF files with names like:
  # path/file1.svg -> file1.pdf
  svg2pdf -o "%(base)s.pdf" path/file*.svg

  # like before but with timestamp in the PDF files:
  # path/file1.svg -> path/out-12-58-36-file1.pdf
  svg2pdf -o {{dirname}}/out-{{now.hour}}-{{now.minute}}-{{now.second}}-%(base)s.pdf path/file*.svg

issues/pull requests:
    https://github.com/deeplook/svglib

Dependencies

Svglib depends mainly on the reportlab package, which provides the abstractions for building complex Drawings which it can render into different fileformats, including PDF, EPS, SVG and various bitmaps ones. Other dependancies are lxml which is used in the context of SVG CSS stylesheets.

Previous versions of this package included a way to run cairo without explicit installation by the user; the dependency that took care of that no longer does this installation, and as such, the user must install cairo themselves. For installation instructions, see the official website: https://www.cairographics.org/download/

Installation

There are three ways to install svglib.

Using pip ++++++++++++++++

With the pip command on your system and a working internet connection you can install the newest version of svglib with only one command in a terminal::

$ pip install svglib

You can also use pip to install the very latest version of the repository from GitHub, but then you won't be able to conveniently run the test suite::

$ pip install git+https://github.com/deeplook/svglib

2. Using conda ++++++++++++++++++

If you use Anaconda_ or Miniconda_ you are surely using its respective package manager, Conda_, as well. In that case you should be able to install svglib using these simple commands::

$ conda config --add channels conda-forge
$ conda install svglib

Svglib was kindly packaged for conda by nicoddemus_. See here more about svglib with conda_.

Manual installation +++++++++++++++++++++++

Alternatively, you can install a tarball like svglib-<version>.tar.gz after downloading it from the svglib page on PyPI_ or the svglib releases page on GitHub_ and installing it via pip:

$ pip install svglib-<version>.tar.gz

This will install a Python package named svglib in the site-packages subfolder of your Python installation and a script tool named svg2pdf in your bin directory, e.g. in /usr/local/bin.

Development and Testing

To develop svglib, install uv_ and run uv sync to install the requirements and development dependencies. To run the test suite with pytest, run: uv run pytest.

.. _uv: https://docs.astral.sh/uv/

Distribution Testing

The svglib tarball distribution contains a PyTest_ test suite in the tests directory. There, in tests/README.rst, you can also read more about testing. You can run the testsuite e.g. like shown in the following lines on the command-line::

$ make test
========================= test session starts =========================
platform darwin -- Python 3.9.6, pytest-8.4.2, pluggy-1.6.0
rootdir: /Users/dinu/dev/svglib
configfile: pyproject.toml
plugins: cov-7.0.0
collected 115 items

tests/test_basic.py ............................................ [ 43%]
..................                                               [ 53%]
tests/test_fonts.py ............s.....................s.....     [ 88%]
tests/test_samples.py .s.s.s.s.....                              [100%]

============== 109 passed, 6 skipped, 1 warning in 33.32s =============

Bug reports

Please report bugs on the svglib issue tracker_ on GitHub (pull requests are also appreciated)! If necessary, please include information about the operating system, as well as the versions of svglib, ReportLab and Python being used!

.. _SVG: http://www.w3.org/Graphics/SVG/ .. _W3C SVG test suite: http://www.w3.org/Graphics/SVG/WG/wiki/Test_Suite_Overview .. _flags from Wikipedia: https://en.wikipedia.org/wiki/Gallery_of_sovereign_state_flags .. _symbols from Wikipedia: https://en.wikipedia.org/wiki/List_of_symbols .. _ReportLab: https://www.reportlab.com/opensource/ .. _RML: https://www.reportlab.com/software/rml-reference/ .. _svglib issue tracker: https://github.com/deeplook/svglib/issues .. _PyTest: http://pytest.org .. _svglib page on PyPI: https://pypi.org/project/svglib/ .. _svglib releases page on GitHub: https://github.com/deeplook/svglib/releases .. _Python file object: https://docs.python.org/3/glossary.html#term-file-object .. _Anaconda: https://www.anaconda.com/download/ .. _Miniconda: https://conda.io/miniconda.html .. _Conda: https://conda.io .. _svglib with conda: https://github.com/conda-forge/svglib-feedstock .. _nicoddemus: https://github.com/nicoddemus

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svglib

====== Svglib

A pure-Python library for reading and converting SVG

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