# Cypress vs Playwright: source lines of code compared

The Cypress vs Playwright comparison on OctoCounts shows side-by-side source line counts for cypress-io/cypress and microsoft/playwright, counted with the same engine and analysis options on the dates shown in the methodology line: files, total lines, code lines, comment lines, blank lines, and per-language totals, pinned to the exact commits listed below.

As of 2026-09-16, cypress-io/cypress contains 619,123 total lines (491,974 code) across 5,303 files, while microsoft/playwright contains 364,397 total lines (221,177 code) across 1,161 files as of 2026-09-16. cypress-io/cypress is about 2.2x the size of microsoft/playwright by code lines. Code size is not code quality: a larger count only means more source material, not a better or worse project.

| Metric | [cypress-io/cypress](https://octocounts.com/github/cypress-io/cypress) | [microsoft/playwright](https://octocounts.com/github/microsoft/playwright) |
| --- | ---: | ---: |
| Files | 5,303 | 1,161 |
| Total lines | 619,123 | 364,397 |
| Code lines | 491,974 | 221,177 |
| Comment lines | 51,610 | 115,568 |
| Blank lines | 75,539 | 27,652 |
| Languages counted | 12 | 12 |

Top languages in cypress-io/cypress: TypeScript (40.4% of code), JSON (32.8% of code), JavaScript (18.0% of code). Top languages in microsoft/playwright: TypeScript (72.5% of code), JSON (6.9% of code), JavaScript (6.2% of code). TypeScript, JSON, JavaScript, TSX appear in both top language lists; HTML appears only in cypress-io/cypress's top languages; CSS appears only in microsoft/playwright's top languages.

Methodology: both counts come from cached OctoCounts reports generated with tokei. cypress-io/cypress was counted at ref 7e9f631a660456ebf520c435fe2ed3adbdff6c27 (commit 7e9f631a6604) on 2026-09-16; microsoft/playwright was counted at ref 18205280b6112a4a08238195942c4fa30c199a62 (commit 18205280b611) on 2026-09-16. See the [counting methodology](https://octocounts.com/docs/methodology) for ignored directories and analysis options.
## About this comparison

cypress-io/cypress counts the Cypress monorepo: the browser driver, the Electron-based desktop runner app, CLI, and their test suites. microsoft/playwright counts the Playwright repository: the browser automation library and test runner, including its Node.js, Python, .NET, and Java language ports in one tree. Both were counted on the dates shown above, but the two trees have different internal shapes.

Playwright's per-language table is polyglot by design — the repository maintains client libraries for several languages in parallel — while Cypress's counted code is concentrated in TypeScript/JavaScript, so the language mix partly measures how many language bindings a project keeps in one repo.

Both trees carry heavy fixture and test-corpus material: each project counts web pages, apps, and suites used to prove the tool works, not just the code that ships.

_Repository size does not measure test execution speed, flakiness, or browser support — and because Playwright's count spans multiple language ports while Cypress's spans a desktop app, the totals are not directly like-for-like either._

Sources: [cypress-io/cypress repository (driver and desktop runner)](https://github.com/cypress-io/cypress) · [microsoft/playwright repository (multi-language automation library)](https://github.com/microsoft/playwright). Statements verified 2026-09-16.

Evidence and next steps:

- [cypress-io/cypress SLOC report](https://octocounts.com/github/cypress-io/cypress)
- [microsoft/playwright SLOC report](https://octocounts.com/github/microsoft/playwright)
- [Compare cypress-io/cypress and microsoft/playwright interactively](https://octocounts.com/compare?left=https%3A%2F%2Fgithub.com%2Fcypress-io%2Fcypress&right=https%3A%2F%2Fgithub.com%2Fmicrosoft%2Fplaywright)

Note: code size is not code quality. OctoCounts only reports reproducible line counts and makes no claim that either project is better.

## Compare FAQ

### Which has more lines of code, cypress-io/cypress or microsoft/playwright?

cypress-io/cypress has more code: 491,974 code lines versus 221,177 for microsoft/playwright, about 2.2x as much, based on cached OctoCounts reports as of 2026-09-16.

### Does more source lines of code mean more complexity?

Not necessarily. SLOC measures size, not complexity, quality, or maintainability. A larger codebase can mean more features, more generated or vendored code, more verbose language idioms, or more tests — none of which imply the code is harder to work with. Use SLOC to gauge the scale of what you'd be reading or maintaining, not as a quality signal for cypress-io/cypress, microsoft/playwright, or any repository.

### How is this comparison calculated?

Methodology: both counts come from cached OctoCounts reports generated with tokei. cypress-io/cypress was counted at ref 7e9f631a660456ebf520c435fe2ed3adbdff6c27 (commit 7e9f631a6604) on 2026-09-16; microsoft/playwright was counted at ref 18205280b6112a4a08238195942c4fa30c199a62 (commit 18205280b611) on 2026-09-16. See the counting methodology for ignored directories and analysis options.

### Can I compare a different branch, tag, or commit?

Yes. This page shows the default branch for each repository. Use the interactive comparison tool to pick any public GitHub repository, branch, tag, or commit SHA for both sides and get a fresh side-by-side report.

## Related OctoCounts pages

- [Interactive repository comparison](https://octocounts.com/compare)
- [Recently analyzed repositories](https://octocounts.com/recent)
- [Popular SLOC reports](https://octocounts.com/popular)
- [Trending GitHub repositories](https://octocounts.com/trending)
- [Hall of Monoliths](https://octocounts.com/hall-of-monoliths)
- [Original research: how filtering changes SLOC counts](https://octocounts.com/research)
- [GitHub SLOC counter guide](https://octocounts.com/docs/github-sloc-counter)
- [Counting methodology](https://octocounts.com/docs/methodology)
- [SLOC and code metrics glossary](https://octocounts.com/docs/glossary)
- [OctoCounts API docs](https://octocounts.com/docs/api)