I-PDF ye-OCR

I-Free Online PDF OCR

Khetha amafayela akho

*Amafayela asusiwe ngemva kwamahora angu-24

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Isetshenziswa kanjani

1 Upload your scanned PDF

2 Open this page in the language of the document; the text is recognised in that language

3 Click Process to extract text

4 Download your searchable PDF

I-PDF ye-OCR Imibuzo Evame Ukubuzwa

Indlela i-OCR PDF iguqula ngayo isikhangiso sibe umbhalo?

Ngokucacile, ikhasi ngalinye libonisa, lihamba nge-Tesseract text-recognition pass ezilimi ezingaphezu kuka-100, futhi amagama ayaziwayo abhalwe emuva njenge-text layer engabonakali ebekwe phezu kwesithombe sakuqala - ngakho ikhasi libukeka lishintshiwe kodwa lifunaka futhi likhethwa. Ikhasi libukeka ngokucacile njengoba likwenze - umbhalo owaziwayo uhlala engekho ngemuva kwesithombe ngakho ukufuna nokukhethwa kusebenza ngaphandle kokushintsha ukubonakala.

Iyini ulwimi oluzokwazi ukuwaqonda?

Kungaphezu kuka-100, kufaka phakathi isiLatini, isiCyrillic, isiGreki, isiArabhu, isiHebhere, isiChinese, isiJapane, isiKorea kanye ne-Indian scripts. Ukutshela ukuthi iyiphi ulwimi olindele ukulisebenzisa kuthuthukisa ngokuqinile ukuthembeka ngaphezu kokushiya ukucabanga.

Ingabe ifomethi yomsuka ithinta ukuphawula?

I-PDF ilungisa ikhasi: amafonti, ama-vectors, izithombe ze-raster kanye nemibhalo exhunywe ifakwe efrijini ukuze wonke umfundi abone isitayela esifanayo. Indlela ikhasi eligcinwayo ngayo isinquma ukuthi yini isinqumo kanye nombala wolwazi owaziyo kufanele asebenze nalo.

Ingabe kukhona okuthile okukhethekile ku-PDF lapha?

Yebo - i-PDF iyi-object graph, hhayi isithombe sekhasi, ngakho umbhalo uhlala ukhethwa futhi ama-vectors ahlala aqinile noma yini ekwenzeke ku-raster content ngaphakathi kwayo. Kuthinta lokho okukwaziyo ukukubona.

Ingabe ilungile?

Ku-300 DPI ukuhlola okuhlanzekile kwesihloko esiphrintiwe, okuphezulu ngokwanele ukuthi amaphutha avame ukutholakala futhi avame ukutholakala kumagama ajwayelekile. Ukunemba kuwela phansi ngokuqinile ngesinqumo esiphansi, ukusakazeka, izithunzi kusuka kwikhamera yefoni, amafonti ajwayelekile nokushicilelwa ngesandla — ukushicilelwa ngesandla ngokukhethekile akuyona into enjalo.

Yini okufanele ngiyiskena ukuze ngithole imiphumela engcono kakhulu?

300 DPI kugreyscale yindawo emnandi. ngaphansi kuka-200 DPI, izimpawu ziqala ukulahleka; ngaphezu kuka-400 DPI, awutholanga lutho futhi ukhokhe ngesayizi yefayela nesikhathi sokusebenza.

Yini engikwazi ukuyifaka ku-OCR PDF?

Noma yiziphi i-PDF ezijwayelekile, kufaka phakathi ezikhiqizwa yi-scanner, yi-word processor noma yi-print driver. Amafayela anegama lokungenisa elisemthethweni elivimbela kuphela ukuhlela aphathwa; amafayela adinga igama lomsebenzisi lokungenisa elivulekile aphathwanga, futhi asizama ukuphula ukufihla.

Ingabe kunesikhawulo sobukhulu befayela ku-OCR PDF?

Yebo: ama-akhawunti amahhala aphatha amadokhumende afinyelela ku-25 MB ngalinye, okubandakanya izixhumanisi eziningi nezivumelwano kodwa akuyona i-documenti engakapheli isikhathi eside esakazwe ku-600 DPI; i-Ghostscript ne-qpdf zenza umsebenzi. Ama-PDF asakaziwe yizinto ezijwayelekile ezidlula lokhu, futhi ukucindezela idokhumende kuqala kulungile ukuletha emuva ngezansi.

Ingabe i-OCR PDF izonciphisa ukhwalithi yamadokhumende ami we-PDF?

Umbhalo kanye nemisebenzi yezandla ye-vector yizinto ezingaphezu kwama-pixels, ngakho zihlala ziqinile nganoma yisiphi isibonisi noma yini ekwenzekayo. Izithombe ze-raster ezifakwe kuphela ezingakwazi ukuncipha, futhi uma umsebenzi okhethiwe uphinde uphinde uzame.

Ingabe ngingakwazi ukuqala i-OCR PDF kumadokhumende we-PDF amaningi ngasikhathi sinye?

Yebo — thumela iset futhi baqhubekela phambili ngokufanayo ngaphansi kweset eyodwa yezinhlelo, okuwukuphela kwento eyenza ukuphuma kwedokhumende lapha ngaphezu kokuchofoza ku-desktop reader.

Ingabe amabhukwana, amakhonkco namafomu ahlala?

Izinhlamvu, izixhumanisi zangaphakathi kanye neziphawulo zigcinwa lapho umsebenzi uvumela khona. Izinhlamvu zedijithali ziyisinqumo: noma yikuphi ushintsho kwifayela kudinga ukuvimbela isiphawulo, ngoba lokho kulungile ukuthi yini isiphawulo.

Ingabe i-OCR PDF ibiza noma yini?

Akuna. OCR PDF imahhala ngaphandle kwe-akhawunti, futhi akukho okushiwo kudokhumende. Ukulayisha kanye nemiphumela isuswa ngokuzenzakalela cishe amahora angama-24 ngemuva komsebenzi, oshiya isikhathi sokulanda imiphumela.