Tried your suggestion from private (please excuse my shyness) message. 
 Found out that this is well beyond my abilities.  Got node installed. 
 Installed readability-cli.  Discovered that I had to have an init.lua 
file.  Found one and saved it in directory holding pandoc.  Copied your 
script and saved it as readable.lua, in the same directory.  Discovered 
that I don't seem to know where init.lua and readable.lua need to go.  So 
far, when I run "pandoc -f readable.lua [et cetera]", the response is: 
"error running Lua: [new line] cannot open readable.lua: No such file or 
directory."  All this was on MacOS.  Tried same on MSFT WinOS; similar 
result.
My weariness convinces me that I am Well Out of My Depth.  Don't seem to 
know enough about Node, Lua, or whatever pandoc is written in.  Learned 
some things about Node and Lua.  Success is over an horizon too far. 
 Someday.
Thanks anyway.
Pandoc is still wonderful.
 

On Sunday, January 16, 2022 at 1:59:14 PM UTC-5 John MacFarlane wrote:

>
> I've added a new example of a custom reader, which runs
> the 'readability-cli' program on HTML input before processing
> it with pandoc, extracting the content and omitting navigation
> and layout.
>
> See
>
> https://pandoc.org/custom-readers.html#example-extracting-the-content-from-web-pages
>
> This shows how the new custom reader interface, when combined
> with pandoc.read in the Lua API, can be used to add
> preprocessors.
>
> (Of course, you could do something similar in a shell script.
> But doing it this way ensures that pandoc will be able to
> retrieve resources (e.g. images) from the URL. In addition,
> the filter does some further processing to remove structural
> Divs that clutter the output, and it is easily customizable.)
>

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