Besides Wiki Loves Heritage, you can contribute to Wikipedia and Wikimedia in various ways. A few of these are mentioned below.
A picture is worth a thousand words
Write articles on Wikipedia
Wikipedia is being written by volunteers like you. Anyone can contribute to Wikipedia with new articles or expanding existing ones, but keep in mind the guidelines and basic principles when writing, as those make sure the quality of Wikipedia is assured. If you like, you can ask an experienced user to guide you in your first edits on Wikipedia.
Improve Wikipedia articles
Not only new articles are being written, the quality of existing articles need to be improved as well. You can help with that by clicking edit on top of the article and improve the quality.
Repair vandalism
Sometimes vandals are active on Wikipedia and deliberately attempt to damage Wikipedia articles. All pages have a history in what previous versions can be retrieved and restored. You can help by repairing vandalism and restoring an article to a previous version.
Upload free content
Upload files under a free license and enrich Wikipedia and its sister projects with free media, including images, sound files and videos. An image says more than a thousand words. They are knowledge itself and illustrate written knowledge.
Publish your images to other Wikipedia languages
Just copy the generated image link after uploading to artikels in the different languages
Describe your image to structured metadata
Add a detailed description, and "depicts" property.
