Hvordan kan jeg kopiere tekst fra en PDF, mens formatering bevares?

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Video: Hvordan kan jeg kopiere tekst fra en PDF, mens formatering bevares?

Video: Hvordan kan jeg kopiere tekst fra en PDF, mens formatering bevares?
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Hvordan kan jeg kopiere tekst fra en PDF, mens formatering bevares?
Hvordan kan jeg kopiere tekst fra en PDF, mens formatering bevares?
Anonim
PDF, det allestedsnærværende dokumentformat, er fantastisk til deling af dokumenter, samtidig med at skrifttyper, billeder og det generelle layout på tværs af platforme bevares. Er der imidlertid en nem måde at bevare den meget formatering, når man kopierer og indsætter tekst ud af dokumentet?
PDF, det allestedsnærværende dokumentformat, er fantastisk til deling af dokumenter, samtidig med at skrifttyper, billeder og det generelle layout på tværs af platforme bevares. Er der imidlertid en nem måde at bevare den meget formatering, når man kopierer og indsætter tekst ud af dokumentet?

Dagens Spørgsmål & Svar session kommer til os med venlig hilsen af SuperUser-en underafdeling af Stack Exchange, en community-driven gruppe af Q & A-websteder.

Spørgsmålet

SuperUser-læser Colen søger efter en måde at udtrække tekst fra PDF-filer samtidig med at formateringen bevares:

When I copy text out of a PDF file and into a text editor, it ends up mangled in a variety of ways. Formatting like bold and italics are lost; soft line breaks within a paragraph of text are converted to hard line breaks; dashes to break a word over two lines are preserved even when they shouldn’t be; and single and double quotes are replaced with ? signs.

Ideally, I’d like to be able to copy text from a PDF and have formatting converted to HTML codes, “smart quotes” converted to” and ‘, and line breaks done properly. Is there any way to do this?

Er der en hurtig og nem måde for Colen (og resten af os) at få fat i tekst uden at ofre formateringen?

Svaret

SuperUser bidragyder Frabjous tilbyder en løsning kombineret med en stor dosis forsigtighed:

Firstly, you have to understand what a PDF is. PDFs are designed to mimic a printed page, and they are designed only as an output format, not an input format. a PDF is basically a map containing the exact location of characters (individual letters or punctuation, etc.) or images. In most cases, a PDF does not even store information about where one word ends and another begins, much less things like soft breaks vs. hard breaks for paragraph endings.

(A few recent PDFs do store some information about this stuff, but that’s a new technology, and you’d be lucky to find PDFs like that. Even if you did, your PDF viewer might not know about it.)

Anyway, it’s up to your software to implement some kind of “artificial intelligence” to extract merely from the locations of individual characters what is a word, what is a paragraph, and so on. Different software is going to do this better than others, and it’s also going to depend on how the PDF was made. In any case, you should never expect perfect results. Having the output PDF is not the same as having the source document. Far better to try to obtain that if you can.

The standard solution to your kind of problem is to use Adobe Acrobat Professional (the expensive one, not the free reader) to convert the PDF to HTML. Even that is not going to get perfect results.

There is free software that can be used to extract text from PDFs with some of formatting intact, but again, don’t expect perfect results. See, e.g., calibre (which can convert to RTF format), pdftohtml/pdfreflow, or the AbiWord word processor (with all import/export plugins enabled). There’s also a PDF import plugin for OpenOffice.

But please don’t expect perfection with any of these results. You’re going against the grain here. PDF just is not meant as an editable input format.

Hvis du har problemer med at bestemme hvilket værktøj der skal begynde med, er Caliber et ægte dokument Swiss Army knife. Du kan også bruge den til at konvertere PDF-filer til brug på din ebook-læser og organisere dit e-bog / dokumentbibliotek.

Har du noget at tilføje til forklaringen? Lyde af i kommentarerne. Vil du læse flere svar fra andre tech-savvy Stack Exchange brugere? Tjek den fulde diskussionstråd her.

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