A [wiki](https://en.wikipedia.org/wiki/Wiki) is a collaborative space on the web. It is a common practice to use wikis to collect knowledge and share information.
Codeberg allows you to add a wiki to a repo for additional documentation.
The user in these examples is `knut`, the polar bear and its repository is `foobar`.
## Activation and Permissions
To enable the wiki for a repository, visit the `Settings` page and activate `Enable Repository Wiki` in the `Advanced Section`. It will default to the built-in wiki which is described here, but you can add an URI to an external site the "Wiki" tab should link to.
> Be aware that the wiki, once enabled, is accessible for *everyone* who has `read` access to your repository - on public repositories even anonymous guests can access the wiki.
Editing locally allows you to use your favorite editor (preferably with Markdown syntax check and highlighting) and manage additional assets like images.
### Adding images
You can add images to the root directory or a specific subfolder (like `assets` or `images`) using your local Git client.
A feasible workflow might look like this:
```shell
# create a subfolder for images
mkdir images
cd images
# copy the image into this folder
git add images/image.png
git commit -m "add image"
git push
```
Now, you can reference the image in Markdown, like this:
```markdown
```
After saving your changes, the image should be visible.
> In contrast to embedding external images, images in Git are only rendered after saving the wiki or Markdown file changes.
## Adding a sidebar and a footer
To enhance the usability of your wiki you can add a custom sidebar and a footer that are shown on every page. The sidebar will be displayed to the right of the main content and the footer below.
To enable the sidebar, just add a file named `_Sidebar.md` to your wiki. For a footer the file must be named `_Footer.md`.
Both file types allow common Markdown syntax to adjust the presentation to your needs.
Very basic example for a sidebar:
```markdown
- [[Home]]
### Content
- [Page 1](Page-1)
> knuts wiki
```
> These files starting with `_` are hidden, so in the web UI you need to manually browse for the files. E.g. for our user *knut* and his *foobar* repo:
