Our first steps tour and our frequently asked questions will help you a lot after registration. They explain how to customize the interface (for example the language), how to upload files and our basic licensing policy (Wikimedia Commons only accepts free content).
You don't need technical skills in order to contribute here. Be bold when contributing and assume good faith when interacting with others. This is a wiki.
Tip: Categorizing images
Thanks a lot for contributing to the Wikimedia Commons! Here's a tip to make your uploads more useful: Why not add some categories to describe them? This will help more people to find and use them.
1) If you're using the UploadWizard, you can add categories to each file when you describe it. Just click "more options" for the file and add the categories which make sense:
2) You can also pick the file from your list of uploads, edit the file description page, and manually add the category code at the end of the page.
For example, if you are uploading a diagram showing the orbits of comets, you add the following code:
When picking categories, try to choose a specific category ("Astronomical diagrams") over a generic one ("Illustrations").Thanks again for your uploads! More information about categorization can be found in Commons:Categories, and don't hesitate to leave a note on the help desk.
- Image:Radium 2.jpg was uncategorized on 13 November 2011 CategorizationBot (talk) 19:37, 14 November 2011 (UTC)
Image doesn't match
You have uploaded this image to Wikipedia: https://commons.wikimedia.org/wiki/File:Nuclear_particle_in_a_diffusion_cloud_chamber.png
However, you have the same image in your website, but with different labels for the particles, on this page: http://www.cloudylabs.fr/wp/phys/
Your website lists one trace as being an electron, while the Wikipedia image shows it as being a gamma ray, for example. Which image is correct? I suggest changing updating either your website or the Wikipedia image to be the correct version.
Hi, I dont know how to answer you but both pictures are correct. Physician and students in nuclear physics will understood the difference. Delta ray is electrons, but there is no gamma ray. Maybe the wikipedia picture is more detailled than the one in my website. — Preceding unsigned comment added by Mauswiesel (talk • contribs) 16:42, 23 December 2016 (UTC)
File:CW building.jpg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.
If you created this file, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue. Please see Commons:But it's my own work! for a guide on how to address these issues.
220.127.116.11 17:11, 15 August 2019 (UTC)