Copier

Spec sheet

Purpose

Copier is a library and command-line app for rendering project templates.Read 5 Oct 2026 · copier.readthedocs.io

Intended users

Copier describes template creators who want to reduce repeated coding and template consumers who want to start projects quickly or evolve them comfortably.Read 5 Oct 2026 · copier.readthedocs.io

Security

Jinja extensions, migrations, and tasks can execute arbitrary code, so these features are disabled by default and require explicit trust.Read 5 Oct 2026 · copier.readthedocs.io

License

The project’s GitHub repository identifies its license as MIT.Read 5 Oct 2026 · github.com

File handling

Copier avoids overwriting existing files unless instructed to do so.Read 5 Oct 2026 · copier.readthedocs.io

Install methods

The docs list pipx, uv, pip, conda-forge, and Homebrew installation methods; Homebrew is listed for macOS or Linux.Read 5 Oct 2026 · copier.readthedocs.io

Project creation

Template questionnaires collect answers that Copier uses to generate project files and directory structures.Read 5 Oct 2026 · copier.readthedocs.io

Project updates

Copier can update generated projects from evolving templates, though not all templates support updates.Read 5 Oct 2026 · copier.readthedocs.io

Python API

Copier can be used programmatically through Python functions such as run_copy.Read 5 Oct 2026 · copier.readthedocs.io

Rendering

Copier uses Jinja2 to render files with the .jinja suffix or a configured alternative suffix.Read 5 Oct 2026 · copier.readthedocs.io

Requirements

The documentation lists Python 3.10 or newer and Git 2.27 or newer as installation prerequisites.Read 5 Oct 2026 · copier.readthedocs.io

Template input

It works with local paths and Git URLs, including GitHub and GitLab URL shortcuts.Read 5 Oct 2026 · copier.readthedocs.io

Update conflicts

Project updates can produce inline conflict markers or .rej files, which the docs say should be reviewed manually.Read 5 Oct 2026 · copier.readthedocs.io

Plans and prices

Every Copier plan and price →

Where Specifiction places it

• Code Generators#13 of 338.1