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@Simon Thank you. I've tried to follow your description. The actual versions have changed: pdftools.pdfposter-0.8.tar.gz and PyPDF2-2.6.0.tar.gz If I carry out the install command the following error message occurs: $ pip install --user pdftools.pdfposter-*.tar.gz PyPDF2-*.tar.gz Processing ./pdftools.pdfposter-0.8.tar.gz ERROR: Command errored out with exit status 1: command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-lsq8tuq0/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-lsq8tuq0/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-req-build-lsq8tuq0/pip-egg-info cwd: /tmp/pip-req-build-lsq8tuq0/ Complete output (33 lines): Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-req-build-lsq8tuq0/setup.py", line 74, in <module> setup(cmdclass=cmdclass) File "/usr/lib/python3.6/site-packages/setuptools/__init__.py", line 140, in setup return distutils.core.setup(**attrs) File "/usr/lib64/python3.6/distutils/core.py", line 121, in setup dist.parse_config_files() File "/usr/lib/python3.6/site-packages/setuptools/dist.py", line 495, in parse_config_files ignore_option_errors=ignore_option_errors) File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 114, in parse_configuration meta.parse() File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 400, in parse section_parser_method(section_options) File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 373, in parse_section self[name] = value File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 177, in __setitem__ value = parser(value) File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 466, in _parse_version version = self._parse_attr(value, self.package_dir) File "/usr/lib/python3.6/site-packages/setuptools/config.py", line 323, in _parse_attr module = import_module(module_name) File "/usr/lib64/python3.6/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 994, in _gcd_import File "<frozen importlib._bootstrap>", line 971, in _find_and_load File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 665, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/tmp/pip-req-build-lsq8tuq0/pdftools/pdfposter/__init__.py", line 27, in <module> from PyPDF2 import PdfWriter, PdfReader, PageObject ModuleNotFoundError: No module named 'PyPDF2' ---------------------------------------- ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output. Apart from that: will it be possible in pdfposter program to work with overlapping or will the program slice just at the edge of page?