Apne reader ka night mode kyun na istemaal karoon?

Kyunki wo sirf tab tak lagta hai jab tak wo reader khula ho. Recoloured file phone, tablet, e-ink device aur jahan bhi aap bhejein, dark hi rehti hai.

Recolour karne ke liye document upload hota hai?

Nahi. Rendering aur recolouring dono isi tab mein hote hain, isliye research papers aur internal documents aapke device par rehte hain.

Kya invert karne se battery bachti hai?

OLED screen par kaafi — dark pixels bahut kam bijli lete hain. LCD par battery par farq nahi padta, sirf aaraam par.

Kya main sirf kuch pages invert kar sakta hoon?

Load kiye sab pages convert hote hain. Pehle apni pasand ke pages nikaalein, unhein invert karein aur zaroorat ho to wapas merge kar lein.

Kya sepia poori inversion se behtar hai?

Lambe sessions ke liye kai log use aasaan paate hain — kaale par shuddh safed thoda kaanpta lagta hai. Apne hi text ke ek page par dono aazma lein.

PDF colours invert karein

Lambe paath ke liye PDF ki dark-mode, sepia ya greyscale copy banayein.

Recolouring poori tarah aapke device par chalti hai. Papers aur internal documents locally render hote hain aur kabhi upload nahi hote.

Recoloured file ka size ghatayein

PDF ke colours ultein ke baare mein

Andhere kamre mein safed page ek floodlight hai, aur zyadaatar PDF readers ya to document invert kar hi nahi paate ya sirf tab tak karte hain jab tak aap dekh rahe hon. Sach mein dark copy banane ka matlab hai pages ko khud recolour karna, jo yeh tool karta hai. Har page render hota hai, har pixel invert hota hai, aur nateeja naye PDF mein likha jaata hai jo har reader mein, har device par, e-ink samet, dark hi rehta hai. Sepia ek kadam aage jaakar inverted nateeje ko garam karta hai, aur greyscale sirf rang nikaal deta hai.

Features

Sachchi inversion: safed pages dark ho jaate hain aur har reader mein dark rehte hain
Sepia mode lambe paath ke liye nateeje ko garam banata hai
Monochrome printing aur dhyaan bhatakna kam karne ke liye greyscale mode
108 se 216 dpi resolution, size aur teekhepan ka sauda
Download se pehle recoloured pages ke live thumbnails
Page sizes bilkul waise hi, isliye document ab bhi sahi print hota hai
Lambe documents chalte hain, ek baar mein 80 pages tak

PDF ke colours ultein kaise use karein

PDF page par drop karein
Dark mode, sepia ya greyscale chunein aur thumbnails dekhein
Chhoti likhaawat naram lage to resolution badhayein
Recoloured PDF download karein

Example

Input

textbook-chapter.pdf — 22 pages, black text on white

Output

A 22-page PDF with near-black pages and light text, at the same page size.

Diagrams bhi text ke saath invert hote hain, aur aam taur par sunne se behtar padhte hain.

Common errors aur troubleshooting

Text ab select nahi hota. — Recolouring pixel-dar-pixel chalti hai, isliye pages images ban jaate hain. Search aur copy ke liye original rakhein aur padhne ke liye dark copy.
Invert karne ke baad photographs ajeeb lagti hain. — Photograph invert karne se wo negative ban jaati hai. Asli images wale documents mein greyscale behtar hai, ya unhein pehle crop kar dein.
Dark version original se kaafi bada hai. — Dark page safed page se kam compress hota hai, aur vector text ki jagah pixels aa gaye hain. Resolution ghatayein, ya nateeja compress karein.
Chhoti likhaawat dhundhli lag rahi hai. — Resolution 216 dpi kar dein. Keemat size hai: us setting par lamba document kaafi bhaari ho jaata hai.

Aksar pooche jaane wale sawaal

Apne reader ka night mode kyun na istemaal karoon?: Kyunki wo sirf tab tak lagta hai jab tak wo reader khula ho. Recoloured file phone, tablet, e-ink device aur jahan bhi aap bhejein, dark hi rehti hai.
Recolour karne ke liye document upload hota hai?: Nahi. Rendering aur recolouring dono isi tab mein hote hain, isliye research papers aur internal documents aapke device par rehte hain.
Kya invert karne se battery bachti hai?: OLED screen par kaafi — dark pixels bahut kam bijli lete hain. LCD par battery par farq nahi padta, sirf aaraam par.
Kya main sirf kuch pages invert kar sakta hoon?: Load kiye sab pages convert hote hain. Pehle apni pasand ke pages nikaalein, unhein invert karein aur zaroorat ho to wapas merge kar lein.
Kya sepia poori inversion se behtar hai?: Lambe sessions ke liye kai log use aasaan paate hain — kaale par shuddh safed thoda kaanpta lagta hai. Apne hi text ke ek page par dono aazma lein.

Related tools

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PDF padhkar sunayein — PDF ko hisse-dar-hissa awaaz mein sunein.
PDF Crop karein — Crop box ke saath har page ke margins crop karein.
Resize PDF — Har PDF page ko A4, Letter ya kisi aur standard size mein rescale.
Image Filters — Apply grayscale, sepia, contrast, blur and more, then export the PNG and the CSS.
PDF to ZIP — Har page ko ek archive ke andar apni file ki tarah export karein.