You are correct, my apologies. I should have clarified; this massive HTML string is actually a concatenation of hundreds of smaller HTML files. I realize this sounds stupid, but I am combining hundreds of files into few (about 10) and then checking if any of these is too big. This is necessary for reasons I won't go into too much (table of contents generation, internal pdf linkage...). Ideally I would split the string at the first closing </html> tag past 500,000 characters. This is why I was looking to use a regex  /(.{500000,}?<\/html>/gs

In reply to Re^2: Split very big string in half by fpscolin
in thread Split very big string in half by fpscolin

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