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by civilitty
999 days ago
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It's also feasible to track changes this way. Download the PDF and compare the md5/crc/sha hash to an older pdf file - if they're the same, then there haven't been any changes. With web pages, you have to download all the linked files and turn them into a deterministic archive and hope that the Javascript included doesn't pull any dynamic content (which isn't really practical to begin with). |
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