LinkOut XML File Validator
The LinkOut File Validator validates the XML files that full text and database and other LinkOut providers supply to NCBI. These XML files must be valid against the NCBI LinkOut DTD. Learn more about the LinkOut XML file specifications.
Libraries that use Outside Tool with their linking service do not need to upload or validate any XML files. Learn more about Outside Tool for Libraries.
LinkOut File Validator Options
- Enter or paste the contents of your LinkOut XML file into a text box (30KB size limit)
- Upload your LinkOut XML file (5MB file size limit)
Frequently Asked Questions
The Validator uses strict syntax. Errors in one part of a file will affect how the program validates the rest of the file. The best approach to fixing a file is to check the lines around where an error occurred, fix the syntax errors, then submit the file for validation again.
The Validator will only find errors in XML syntax, e.g. missing element tags, spelling errors in elements, elements in the wrong order. It does not validate whether the URLs in your XML files are correct or if your query is a valid NCBI database query.
Full Text providers may transfer new versions of current LinkOut XML files or add new LinkOut XML data at any time. Validate all files before uploading the files to your assigned FTP account. If you cannot find your FTP login information, write to linkout@ncbi.nlm.nih.gov
Need more help?
- Send email to linkout@ncbi.nlm.nih.gov
- Help Information for Full Text Providers
- Help Information for Scientific Databases