The Free Version of the PDF-XChange Editor is a light weight, easy to use application with many free features including: direct text editing of text-based PDF documents, OCR a PDF, annotations and markup tools, the ability to save and send fillable PDF form data, and free plugins allow easy access to third-party storage sites and servers such as Google Drive & SharePoint. You can also try out licensed features including add/reorder/remove pages, digital signing and much more.
M. Gärtner, F. Kleinkopf, M. Andresen, und S. Hermann. Proceedings of the Workshop on Challenges in the Management of Large Corpora (CMLC-9) 2021. Limerick, 12 July 2021 (Online-Event), Leibniz-Institut für Deutsche Sprache, (2021)