Put simply, Liner is a virtual highlighter. It works on PDFs and webpages in the same way a regular highlighter works on books and magazine clippings. Read more about Liner.
Citation Saver Alternatives
SaaSHub's Down Detector checks the status of services automatically and regularly. However, we cannot promise 100% accuracy. That is why we depend on user reported issues as well. The Citation Saver status here can help you determine if there is a global outage and Citation Saver is down for everyone or it is just you that is experiencing problems. Please always report any issues to help others know the current status.