Unicode-Table.com VS W3C Markup Validation Service

If your terminal supports unicode characters you can add an unicode characters to the status bar. - Source: dev.to / over 1 year ago

The character code for r is 72, so you'd use that instead - https://unicode-table.com/en/. Source: over 1 year ago

Second, check for a character that you'll never use or a character you know your server members won't use. Use this website to find a random symbol and copy the code.*. Source: over 1 year ago

₸ℌᎥᏕ ֆĪ⍡ҿ ŁĮŠṪక ᎯȴĿ Ա⋒ΐᏨỢᗫε ÇĦǞ尺Ⱥ₡†ҿᚱ₰. Source: over 1 year ago

So what you need is look up the Unicode table. For example, https://unicode-table.com/en/ though it doesn't seem to load for me beyond the initial table. Source: over 1 year ago

Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / about 1 month ago

===> Click here to run your code through the HTML validator. - Source: dev.to / 5 months ago

Try looking at tools like https://validator.w3.org/. Source: 5 months ago

I'm looking for either that specific validator (older version of https://validator.w3.org/) or an equivalent that can validate pre-HTML5 (DTD-based) files in a similar fashion. I would appreciate any pointers in the right direction. Thanks in advance. Source: 11 months ago

Not an addon, but maybe it helps Https://validator.w3.org/. Source: 11 months ago