Source: https://seerepo.com/compare/py-pdf/pypdf/vs/SeleniumHQ/selenium
Markdown source: https://seerepo.com/compare/py-pdf/pypdf/vs/SeleniumHQ/selenium.md
Description: pypdf and selenium share 8 technologies: alabaster, cryptography, docutils, imagesize, jinja2, markdown-it-py, markupsafe, and mdurl. pypdf is written in Python and selenium in Java.

# pypdf vs selenium

pypdf and selenium share 8 technologies: alabaster, cryptography, docutils, imagesize, jinja2, markdown-it-py, markupsafe, and mdurl. pypdf is written in Python and selenium in Java.

- [py-pdf/pypdf](https://seerepo.com/r/py-pdf/pypdf): A pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
- [SeleniumHQ/selenium](https://seerepo.com/r/SeleniumHQ/selenium): A browser automation framework and ecosystem.

## What they share and what sets them apart

- In common: alabaster, cryptography, docutils, imagesize, jinja2, markdown-it-py, markupsafe, mdurl
- Only in pypdf: sphinx-rtd-theme, fonttools, defusedxml, fpdf2, mdit-py-plugins, myst-parser, sphinxcontrib-jquery, pillow, execnet
- Only in selenium: Tokio, React, react-router-dom, MCP, Express, pydata-sphinx-theme, soupsieve, Rich, keyring, beautifulsoup4, nh3, filetype, infer, zip, rfc3986, System.Diagnostics.DiagnosticSource, env_logger, log, logger, MUI, react-modal, @mui/icons-material

## Side by side

| | pypdf | selenium |
|---|---|---|
| Size | 85,910 lines written, 61 code files | 555,515 lines written, 2,434 code files |
| Who writes it | 1.5% of its commits signed by AI. With Claude Code, GitHub Copilot, Codex, and Cursor | 0.1% of its commits signed by AI. With Claude Code, GitHub Copilot, and Cursor |
| Activity | Last push November 13, 2026, 2,649 commits, 10,299 stars | Last push November 7, 2026, 35,296 commits, 34,577 stars |
| Tests | 47 test files. 55.7% of its code files have a test that imports them | 1,371 test files. 44.3% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, pypdf or selenium?

selenium, with 555,515 lines written; pypdf has 85,910.

The proof: [SeleniumHQ/selenium's code at commit b9fa6bb](https://github.com/SeleniumHQ/selenium/tree/b9fa6bb772cea0bf9971e3b7ba21338159669310)

### Which has more GitHub stars, pypdf or selenium?

selenium, with 34,577 stars; pypdf has 10,299.

The proof: [SeleniumHQ/selenium on GitHub](https://github.com/SeleniumHQ/selenium)

### Which has more tests, pypdf or selenium?

selenium, with 1,371 test files; pypdf has 47.

The proof: [SeleniumHQ/selenium's code at commit b9fa6bb](https://github.com/SeleniumHQ/selenium/tree/b9fa6bb772cea0bf9971e3b7ba21338159669310)

### Which was updated more recently, pypdf or selenium?

pypdf: its last push was on November 13, 2026, and selenium's on November 7, 2026.

The proof: [py-pdf/pypdf's commits on GitHub](https://github.com/py-pdf/pypdf/commits)

### Which has more commits signed by AI, pypdf or selenium?

pypdf: an AI signed 1.5% of its commits, with Claude Code, GitHub Copilot, Codex, and Cursor; in selenium, 0.1%.

The proof: [the commits each tool signed in py-pdf/pypdf](https://seerepo.com/r/py-pdf/pypdf/ai)

## Sources

- py-pdf/pypdf: Read on November 13, 2026, at commit 5f2fa46 (https://github.com/py-pdf/pypdf/tree/5f2fa4697ea5cb14f35d769edd80e4d0f15af46e)
- SeleniumHQ/selenium: Read on November 7, 2026, at commit b9fa6bb (https://github.com/SeleniumHQ/selenium/tree/b9fa6bb772cea0bf9971e3b7ba21338159669310)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.