Google rules for mobile compatibility: 
A few years ago Google got everybody scared that they had to make their pages mobile device friendly or they would not show up in searches.  First of all it is not as much of a problem as Google made out, and second it only applies to searches made on a mobile device.  Plus people can turn their cellphone to horizontal to read larger pages and make the print smaller, so rankings are not going to be affected as much.  I'd say you only need to work on a few pages such as index pages that have to be navigated faster.  If you try to fix every page you could make things worse for working on very large screens if you vary the relative pixel rates and you may have to work in the opposite direction for something that would surely be builtin to browsers.

Google rules for compatibility:

above rules are in links below, testing is performed at https://www.google.ca/webmasters/tools/mobile-friendly/ and that testing does not go well unless you include the  meta viewpoint tag as shown below.

Check the spelling on all pages you update with a bookmarklet: sp - spelling  or with Grammarly which can be installed on Firefox, Chrome, Windows, I have had mixed success within browser itself as opposed to text entry areas, very good when it does it's thing.

You can read your persdict.dat file in your Firefox profile by opening it in your browser, you can then sort the list and copy to a text file. You can find my list of words (1,078) that I added here, or as a txt file here. It is an accumulation and as dictionaries improve you would need to add fewer words to your own dictionary. Add words that come up as spelling erros into your own dictionary.  Just checked Chrome and practically all of them have to be added, and adding them one at a time is not going to happen.

Two examples of large text boxes:  dict, and dict2; the first includes an earlier copy of my dictionary additions, the second is more streamlined.  Purpose of both is to look at text for possible additions to the current browser's dictionary.

The bookmarklet above works in Firefox, you may have to toggle off/on spell check in preferences or in your context menu after running bookmarklet. This is the reason I made large text areas they work better at checking spelling.

 

Basically changes made to main page and search page for testing:

Find  “pre>”, this will find both  <PRE> and </PRE>

Use of PRE  messes up font and underscored links  and extends width, use only for code and wrap code so it is kept within bounds, 

Change   "<a "   to  "<br><a "   use find to find next to see if it is at beginning of line formerly in the  <PER> range; or just prefix each line within  the removed  Preformatted text tags with  <BR>

Find "width="    then change  nnnpx to a   nnn%,   like 80%  or 95%  instead of 780px

Use a spelling checker to examine your current pages.  You can do that for free with Firefox and a bookmarklet and your own dictionary additions.   I'll give you a list of mine, you can use it to add words that appear as spelling errors in your own browser if you accept them individually as correctly spelled .

If in doubt don't add words to your dictionary unless you are sure they are correcty spelled

Test these Links with Mobile-Friendy Test

Shortcomings of Mobile-Friendy Test

LINKS:

This page was created on Feb 26, 2018.
Questions concerning this page can be emailed to me: David McRitchie send email comments (site comments/corrections)