pypdf4

library1.27.0pypypi✓ verified 86d ago

PyPDF4 is a pure-Python PDF toolkit capable of splitting, merging, cropping, and transforming PDF files. Current version is 1.27.0. The library is in maintenance mode with slow updates.

serialization data

pip install pypdf4

package ↗

INSTALL

IMPORT

SIG · PYPDF4

pypdf4

serializationpythonv1.27.0

Install

2.4s avg

Import

30ms

Disk

17MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.27.0 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.032s · 19.6MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 2.4s · import 0.028s · 20MB

17MB installed

● package 17MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

PdfFileReader

✓ from PyPDF4 import PdfFileReader

✗ import PyPDF2 from PyPDF4 import PdfFileReader

PyPDF4 is a separate fork; do not mix with PyPDF2.

Basic example: read a PDF and write its first page to a new file.

from PyPDF4 import PdfFileReader, PdfFileWriter # Read a PDF reader = PdfFileReader(open('example.pdf', 'rb')) print(f"Number of pages: {reader.numPages}") # Write a PDF writer = PdfFileWriter() writer.addPage(reader.getPage(0)) with open('output.pdf', 'wb') as f: writer.write(f)

Debug

Known issues

breakingPyPDF4 is not compatible with PyPDF2. Do not install both; they use similar imports and can conflict.

fix

Uninstall PyPDF2 if you intend to use PyPDF4, or vice versa. Use only one library.

affects: all

deprecatedThe numPages and getPage() methods are deprecated in favor of len(reader.pages) and reader.pages[index]. Future versions may remove the old API.

fix

Transition to the modern API: pages = reader.pages; len(pages); pages[0].

affects: >=1.27.0

gotchaThe library uses a mix of camelCase and snake_case method names (e.g., numPages vs getPage).

fix

Refer to the documentation for each method's exact name; future versions may standardize to snake_case.

affects: all

Errors

Common errors & fixes

ImportError: cannot import name 'PdfFileReader' from 'PyPDF4'

PyPDF4 is not installed or you have PyPDF2 installed instead.

fix

Run: pip install pypdf4

TypeError: 'PdfFileReader' object is not callable

Using PyPDF4's PdfFileReader as a function instead of a class instantiation.

fix

Use: reader = PdfFileReader(stream)

AttributeError: module 'PyPDF4' has no attribute 'PdfFileMerger'

PyPDF4 removed PdfFileMerger in favor of merging via PdfFileWriter.

fix

Use PdfFileWriter and its appendPagesFromReader method.

Upgrade

Version history

1.27.0latest on PyPI · released Aug 7, 2018

Audit

Dependencies

No dependency data recorded yet.

Agent activity

11 hits · last 30 days

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Resources

packagehttps://pypi.org/project/pypdf4/ ↗