Kyauta Mai Raba PDF

Yadda Yake Aiki

Rabon PDF yana gudana gaba ɗaya a burauzarka ta amfani da pdf-lib don kwafi shafuka zuwa sabbin takardu da pdfjs-dist don zana thumbnails masu rai — fayil ɗinka ba ya taɓa loda shi zuwa kowace uwar garke ba.

1. 1
   pdf-lib yana karanta tsarin PDF

   Lokacin da ka jefar da fayil, pdf-lib yana loda ArrayBuffer danye kuma yana nazarin bishiyar shafi na cikin gida na PDF. Yana ƙidaya shafukan kuma yana sanya su samuwa don kwafi babu fassara kowane font ko hoto da aka lulluɓe.
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   pdfjs-dist yana zana thumbnails na shafi

   A layi ɗaya, pdfjs-dist (an loda shi ta CDN worker) yana zana kowane shafi zuwa wani abin Canvas a wajen allo a fadi tsayayye na 220 px. URL na bayanan JPEG suna cika grid na thumbnail a hankali yayin da kowane shafi yake zanawa, don ka fara zaɓen shafuka kafin dukkan takardar ta shirya.
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   Kana zaɓen dabarar rabo

   Yanayoyi uku suna samuwa: raba kowane shafi zuwa PDF ɗinsa, raba zuwa gutsuttsura na shafuka N a lokaci guda, ko zaɓen shafuka na musamman ta danna thumbnails ko rubuta zango kamar '1-3, 7, 10-12'. Grid na thumbnail yana haskaka shafukan da aka zaɓa da iyakokin gutsutsu masu musanya don shirin rabo ya bayyana kafin ka aikata shi.
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   pdf-lib yana rubuta sabbin PDFs; JSZip yana haɗa fitarwa

   Don kowane rukunin fitarwa, pdf-lib yana ƙirƙirar wani sabon PDFDocument kuma yana kwafi shafukan da aka zaɓa kawai zuwa ciki ta amfani da copyPages(). Lokacin da sakamakon yake fayiloli da yawa, JSZip yana tara su zuwa ZIP guda ɗaya. Zango guda da aka cire yana sauke kai tsaye a matsayin PDF babu zip.

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