Internet Archive is an American non-profit library based in San Francisco, California. It runs a digital library website, https://archive.org/.

The Wayback Machine (https://web.archive.org/) is a digital archive of the World Wide Web founded by the Internet Archive. Launched for public access in 2001, it backs up web pages and allows users to go "back in time" to see how websites looked in the past. When files and their licensing terms are archived, they remain valid if the licenses are non-revocable.

Tool to directly upload files from IA to Commons

PD works may be uploaded using the IA Upload tool.

See, in particular:

• Commons:Internet Archive/Book Images collection - August 2014 release of 2.4 million images to Flickr, scanned from IA books

How to upload a specific page from a PDF / DJVU on archive.org?

If you want to upload a specific page from a PDF / DJVU file on archive.org, follow the following steps. (You do not need to download the entire file or convert the document to images by yourself, because for each PDF / DJVU, a ZIP file containing individual pages in picture format is available.)

1. Under "DOWNLOAD OPTIONS", click "SHOW ALL".
2. Find the ZIP file you need (usually its filename ends with "jp2.zip"), and click "View Contents".
3. Find the page you want. Clicking jp2 lets you download it in jp2 format. Clicking jpg opens it in jpg format, which you can also download to your device.
4. Special:UploadWizard, upload on Commons.

If the PDF / DJVU in question is freely licensed, you can consider uploading the PDF/DJVU to Commons first (if it has not been), possibly with IA Upload tool, then you can crop a page using CropTool.