Ek taraf chhape kagaz ke dher ko duplex scan karne par aisa document banta hai jisme har doosra page khaali hota hai, aur unhe haath se dhoondhna wahi kaam hai jo kisi ko nahi karna chahiye. Dikkat ye hai ki scan kiya page kabhi sach mein khaali nahi hota: usme kagaz ke dhabbe, lamp ka halka grey aur aksar wahan ek kaali patti hoti hai jahan sheet khatam hui. Isliye yahan khaalipan naapa jaata hai, maana nahi jaata. Har page render hota hai aur ink wale pixel ka hissa gina jaata hai, threshold aap badal sakte hain.
Features
Har page ki ink coverage naapta hai, text layer par bharosa nahi karta
Har sheet ka khaali peeth naap se milta hai, page number se nahi.
Common errors aur troubleshooting
Halke pencil ya halke letterhead wale page hat jaate hain. — Threshold kam kijiye taaki kam ink bhi content maani jaaye. Har thumbnail ke neeche ka aankda batata hai kaunsi value unhe rakhegi.
Sach mein khaali page bache reh jaate hain. — Scanner shor daal raha hai. Threshold thoda badhaiye, ya ignore kiya jaane wala kinara badhaiye agar nishaan kinare par hain.
Sirf text wale PDF mein har page khaali dikh raha hai. — Dekhiye ki page render ho bhi raha hai — gayab font wala document khaali aa sakta hai. Thumbnail dikhate hain ki kya naapa gaya.
Download button available nahi hai. — Ya to hataane ke liye kuchh nahi chuna gaya, tab export sirf copy hoti, ya sab chuna gaya hai, jisse khaali document bachta. Thumbnail par click karke faisla badliye.
Aksar pooche jaane wale sawaal
Khaali page kaise pehchana jaata hai?
Har page chhota render hota hai aur har pixel ek darkness cutoff se milaya jaata hai. Ink maane gaye pixel ka hissa coverage hai, aur threshold se neeche wala page khaali maana jaata hai.
Kitni coverage khaali maani jaati hai?
Default 0.35% ink wale pixel hai, jo scanner ke aam shor se upar hai aur ek line wale page ko bacha leta hai. Saaf digital PDF theek shunya naapta hai.
Mere scan ke har page par kaala kinara kyun hai?
Scanner ka dhakkan ya sheet ka kinara glass ke kinare par chhaya daalta hai. Bahar ke 2 se 5 pratishat ignore karne se wo naap se hat jaata hai, export par asar nahi.
Kya rakhe gaye page dobara compress hote hain?
Nahi. Page jaise hain waise naye document mein copy hote hain, text select hota rehta hai aur images ki quality bani rehti hai — sirf page ki list badalti hai.
Kya isse khaali ke bajaye separator sheet hata sakte hain?
Apne aap nahi, kyunki separator par aksar barcode ya rang ka block hota hai jo content ginaa jaata hai. Un thumbnail ko haath se chun sakte hain.
Related tools
PDF Split karein — Pages ya ranges (jaise 1-3,5,7-9) ko ek naye PDF mein extract karein.
PDF Organize karein — Thumbnails se pages reorder, rotate aur delete karein aur export karein.
PDF se Images — PDF pages ko PNG ya JPG images mein convert karein jinhe aap download kar sakte hain.
PDF Merge karein — Kai PDFs ko ek mein merge karein, reordering ke saath.
PDF Compress karein — Har page ko chuni hui quality aur resolution par JPEG mein re-render karke PDF chhota karein.
PDF se Text — PDF se selectable text plain text ya Markdown ke roop mein extract karein.
PDF ke aur tools
Text to PDF — Type ya paste kiye text ko paginated, download-yogya PDF banayein.
Markdown to PDF — Markdown — headings, lists, tables aur code — ko PDF ki tarah render karein.
HTML to PDF — HTML markup ko saaf, paginated PDF document mein badlein.
CSV to PDF — CSV rows ko bordered, paginated PDF table ki tarah dikhayein.
Excel to PDF — Workbook ki sheets ko print-yogya PDF tables banayein.
Word to PDF — Ek .docx ko uski structure ke saath PDF mein badlein.
PowerPoint to PDF — Ek .pptx ko PDF banayein, har slide ke liye ek page.
EPUB to PDF — EPUB kitaab ko paginated PDF mein badlein.
PDF to Word — PDF ko editable .docx document ki tarah dobara banayein.
PDF to Excel — PDF ki tables ko .xlsx workbook ya CSV mein nikaalein.