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Copy inspect
What does this site actually put on my clipboard?
A page can rewrite what you copied. The common version is a "read more at …" line appended to every selection; the less common version replaces the text entirely. A clipboard carries several flavours at once - plain text, HTML, sometimes more - and the one that gets pasted depends on where it lands, so all of them are shown.
Reach itPress ⌘+K on any tab and type copy inspect.Ctrl+Kon Windows and Linux

TWO BUILDS9 browsers
Chromelisting in reviewFirefoxlisting in reviewBravelisting in reviewOperalisting in reviewEdgelisting in review4 moreChromium browsers: Arc, Vivaldi, Chromium, Opera GXthe Chrome buildin the panel · free, no counter
What this actually is
what the page actually puts on your clipboard when you copyOn any site where a paste has arrived with something you did not select, and as a check on your own site: a copy handler that appends a tracking parameter is a thing people notice and resent.
Asked about this tool
4 of themWhy show more than the plain text?
Because a paste into a rich editor takes the HTML flavour and a paste into a terminal takes the plain one. A tool that showed only the second would miss exactly the case where the two disagree.
Does it watch my clipboard?
No. It reads the copy event on a page while the tool is open. Nothing is stored, nothing is transmitted, and it has no access to anything you copied elsewhere.
Is a "read more" line always a problem?
No - it is a decision, and this tool exists to make it a visible one. Plenty of sites do it deliberately; the ones worth knowing about are the ones that do it without saying so.
Can it show what a paste will look like?
It shows the payload as the page produced it. What a particular application makes of that is that application’s business, which is why the flavours are listed rather than merged into one preview.
TWO BUILDS9 browsers
Chromelisting in reviewFirefoxlisting in reviewBravelisting in reviewOperalisting in reviewEdgelisting in review4 moreChromium browsers: Arc, Vivaldi, Chromium, Opera GXthe Chrome build63 of these · no host permissions · three free audits