TSE: Off topic: Drawing a red line in your Google Chrome browser for better concentrating on the current line you are reading

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knud van eeden

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Jan 13, 2026, 2:01:04 PMJan 13
to SemWare TSE Pro Text Editor
Hello,

FYIO

I was reading some text on my large 75 inch screen and was suddenly wondering if I could not have a line drawed at the text line one was reading.

So I asked [<Anthropic Claude>]

Could you create e.g. a JavaScript or otherwise any applicable language that in a Google Chrome Browser creates a horizontal (e.g. slightly colored line) that follows my mouse cursor. This in order to make reading easier by keeping the eyes on the same line.

Method: Create a Bookmarklet (Recommended)

1. -Show your bookmarks bar (Ctrl+Shift+B in Chrome)

2. -Right-click on the bookmarks bar "Add page..."

3. -Name: Type "Reading Line" (or whatever you prefer)

4. -URL: Paste the entire JavaScript code I provided

--- cut here: begin --------------------------------------------------

javascript:(function(){if(window.readingLine){document.body.removeChild(window.readingLine);window.readingLine=null;document.removeEventListener('mousemove',window.updateLine);alert('Reading line removed')}else{window.readingLine=document.createElement('div');window.readingLine.style.cssText='position:fixed;left:0;width:100%;height:3px;background:rgba(255,0,0,0.8);pointer-events:none;z-index:2147483647;box-shadow:0 0 5px rgba(0,0,0,0.5)';document.body.appendChild(window.readingLine);window.updateLine=function(e){window.readingLine.style.top=e.clientY+'px'};document.addEventListener('mousemove',window.updateLine);alert('Reading line activated - move your mouse!')}})();

--- cut here: end ----------------------------------------------------

5. -Click "Save"


Inline image

Inline image


with friendly greetings
Knud van Eeden


line.txt

J. David Boyd

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Jan 15, 2026, 10:32:00 AMJan 15
to sem...@googlegroups.com
That is really cool, and will come in very handy when I have to move between browser windows as I'm looking stuff up.   Hmm, assuming it stays in place in multiple windows.   let's see - and it does.   Very nice!
Thanks very much!

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knud van eeden

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Jan 15, 2026, 12:27:05 PMJan 15
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It stays in 1 webpage only. Opening a new webpage and there it is not present. But only 1 click in the top left menu (e.g. 'Reading Line'  link)  to activate it again in any webpage window.

Of course it is very impressive. It is even transparent.

Sent from Yahoo Mail on Samsung Galaxy S24 Ultra / 1 terabyte / artificial intelligence

J. David Boyd

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Jan 15, 2026, 12:35:29 PMJan 15
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we're saying the same thing, I think - each window is unique in regards to the red line.   I love it!


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