The files listed below are available from rfc-editor.org via various methods.
|.txt|| Before: plain text file|
After: the text output of xml2rfc (UTF-8-encoded file with a byte order mark)
| Before: (rare cases) a scan of a hardcopy RFC or a PDF with images added by authors (see  for details).|
After: the PDF output of xml2rfc converted to PDF/A-3 using pdfaPilot .
|.html|| Before: HTML created from TXT using rfc2html |
After: the HTML output of xml2rfc.
|.xml|| [Before: if an XML file exists, the RFC Editor can provide it on request.]|
After: the source file; the output of the preptool
RFC 7991 and
xml2rfc Schema Documentation
|.json||metadata file; see  for details.|
|.txt.pdf|| Before: PDF created directly from the TXT file
[After: This file does not exist. It is replaced by the PDF output of xml2rfc.]
|.notprepped.xml|| The source file before using
Note: Generally, the “v3 era” refers to after the format change, i.e., RFC 8650 and higher. Time-wise, this was October 2019 and afterwards. (There exists one exception, which was not published in the v3 format -- RFC 8489, published February 2020. Its RFC number is intentionally lower than RFC 8650.)
Questions about this page should be directed to rfc-editor at rfc-editor.org.