Provide the URL checking tools available in R 4.1+ as a package for earlier versions of R. Also uses concurrent requests so can be much faster than the serial versions.
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1.0.0 by Jim Hester, 8 months ago
https://github.com/r-lib/urlchecker
Report a bug at https://github.com/r-lib/urlchecker/issues
Browse source code at https://github.com/cran/urlchecker
Authors: R Core team [aut] (The code in urltools.R adapted from the tools package) , Jim Hester [aut, cre] , RStudio [cph, fnd]
Documentation: PDF Manual
GPL-3 license
Imports cli, curl, tools, xml2
See at CRAN