Dead Pixel Test aapki poori screen ko ek baar mein ek colour ya pattern se bhar deta hai, isliye kharaab pixel ko chhupne ki jagah nahin milti. Ismein 23 full-screen views hain: gyaarah solid colours aur grays, paanch gradients, aur saat fine-detail patterns, jinmein one-pixel checkerboard, colour bars aur chhoTa sharpness text shaamil hain. Single-pixel patterns aapke display ke asli pixel ratio ke hisaab se naape jaate hain, isliye 125% ya 200% scaling par bhi ek-pixel ki line ek physical pixel hi hoti hai. Arrow keys, click ya tap se aage badhiye, ise har 2 se 5 second mein khud aage badhne dijiye, aur Esc se bahar aaiye. Your screen panel CSS aur physical pixels mein aapka resolution, colour depth aur aspect ratio dikhata hai, aur refresh rate ko time karta hai. Sab kuch aapke device par hi draw hota hai.
Dead, stuck aur bright pixels ke liye black, white, red, green, blue, cyan, magenta aur yellow, saath mein andhere kamre mein backlight bleed dekhne ke liye black screen
Gray, red, green aur blue ramps aur 16-step gray bar jo banding aur kho gaye shadow detail ko saamne laate hain
Aapke asli pixel ratio ke hisaab se one-pixel checkerboard aur line patterns, aur geometry aur kaTe hue edges ke liye frame wala crosshatch grid
Kaale aur safed background par chhoTa sharpness text, jo non-native resolution se aane wali blur aur colour fringes dikha deta hai
Aage badhne ke liye arrow keys, click, tap ya swipe, har 2, 3 ya 5 second par optional auto-advance, aur bahar nikalne ke liye Esc, window ka focus khona ya tab ka chhup jaana
Your screen panel jisme CSS aur physical resolution, scaling, aspect ratio, colour depth aur naapa hua refresh rate hai jo aap copy kar sakte hain
Photosensitivity warning ke peeche stuck-pixel exerciser, jisme drag hone wala 200 px ka square aur ek timer hai
Dead Pixel Test kaise use karein
Screen ko naram sookhe kapDe se ponchhiye, browser zoom 100% par rakhiye aur kamre ki roshni kam kijiye
Start full-screen test dabaiye, ya tiles mein se koi ek pattern khol lijiye
Arrow keys, click ya tap se patterns mein aage badhiye, aur har colour ko, khaaskar corners aur edges ko, dhyaan se dekhiye
Esc dabaakar bahar aaiye, phir note kijiye ki kis pattern mein har dot dikha aur screen par kahaan
Ye bhi jaanna ho ki aapka display kya de raha hai, to Measure refresh rate dabaiye
Example
Input
Start full-screen test · 24-inch monitor at 1920 × 1080 · room lights dimmed
Output
White: 1 black dot, 40% from the left and 62% from the top → dead pixel
Black: no bright dots; faint glow in the bottom-left corner → light backlight bleed
Red, green, blue: no stray dots
Gray ramp: smooth · 16-step gray: all 16 bars distinct
Refresh rate: 60 Hz (measured 59.9 Hz, jitter ±0.12 ms)
Is tarah ka note, jisme pattern aur har dot ki position likhi ho, wahi hai jo seller ya maker ki support maangegi.
Common errors aur troubleshooting
Screen ponchhne par ek dot gaayab ho gaya. — Wo dhool ya daagh tha, pixel ki kharaabi nahin. Asli dead ya stuck pixel bilkul wahin rehta hai, ponchhne ke baad bhi aur har pattern mein bhi. Screen ko naram, sookhe microfibre kapDe se saaf kijiye aur dobara dekhiye.
Test poori screen par nahin failta. — Jo browsers asli full screen mein nahin ja paate, jaise iPhone par Safari, wo uski jagah page ko bhar dete hain. Browser toolbar chhupaiye ya page ko home screen par add kijiye. Computer par, browser poochhe to full screen allow kijiye, ya pehle F11 dabaiye.
Single-pixel patterns dhundhle dikhte hain ya jhilmilate hain. — Browser zoom 100% par aur display ko uske native resolution par set kijiye. Kisi aur zoom ya resolution par picture scale ho jaati hai aur paas ke pixels mil jaate hain, chahe pattern kitni bhi savdhaani se naapa gaya ho.
Mere 144 Hz monitor par refresh rate 60 Hz dikha raha hai. — Kai monitors tab tak 60 Hz par rehte hain jab tak aap system ki display settings mein rate badhaate nahin. Battery-saver mode mein browser animation ko 60 Hz par cap bhi kar sakta hai. Setting badaliye, tab ko saamne rakhiye aur dobara naapiye.
Aksar pooche jaane wale sawaal
Dead Pixel Test chalaane ke baad kitne dead pixels theek maane jaate hain?
Koi ek number nahin hai. ISO 9241-307 standard panels ko pixel-fault classes mein baantta hai, ek wo jo koi kharaab pixel allow nahin karti, se lekar wo jo har million mein kuch allow karti hain, type ke hisaab se ginte hue: hamesha dark, hamesha lit aur akele sub-pixels. Aap kya claim kar sakte hain, wo maker ki apni warranty tay karti hai. Kuch ek bright pixel par bhi panel badal dete hain, kuch ko kai faults ya ek cluster chahiye. Apne model ki policy dekhiye aur note rakhiye ki kis pattern mein har dot dikha.
Dead Pixel Test mein dead, stuck aur hot pixel ka fark kya hai?
Dead pixel hamesha dark rehta hai, isliye wo har colour par ek kaala dot hota hai. Stuck pixel ke ek ya do sub-pixels on atak jaate hain, isliye wo red, green, blue, cyan, magenta ya yellow dot dikhta hai, jo black par sabse aasaani se dikhta hai. Hot pixel, jise bright pixel bhi kehte hain, poora on atka hota hai: black screen par ek safed dot. Dhool aur daagh inmein se kuch nahin; wo surface par baithe hote hain aur ponchhne se hat jaate hain, jabki asli kharaabi apni jagah rehti hai.
Dead Pixel Test mein sabse pehle kaun se colours check karne chahiye?
White aur black se shuru kijiye, jo milkar zyaadatar kharaabiyan pakaD lete hain: dead pixels white par kaale dots ki tarah dikhte hain, aur stuck ya bright pixels black par coloured ya safed dots ki tarah. Phir red, green aur blue chalaiye, jahan ek kharaab sub-pixel apne hi colour ke saamne ubhar kar dikhta hai. Ant mein grays aur gradients se barabar brightness aur smooth shading check kijiye. Dark patterns ke liye kamre ki roshni kam kijiye aur beech ke saath-saath corners aur edges bhi dekhiye.
Dead Pixel Test ke gradients mein dhaariyan ya bands kyun dikhte hain?
Ramp brightness ke seemit steps se banta hai, ek typical 8-bit screen par har colour ke 256, isliye achhe panel par bhi gray ramp mein halke steps dikh sakte hain. Saaf bands kam colour depth ki taraf ishaara karte hain: sasti panels aksar kam bits use karti hain aur baaki dither kar deti hain, aur reduced colour mode ya monitor ki apni picture processing ise aur bigaaD sakti hai. 16-step gray bar ko check ki tarah use kijiye: aap har paas wale bar ko alag pehchaan paane chahiye.
Kya Dead Pixel Test ka stuck-pixel exerciser sach mein pixels theek karta hai?
Kam hi, aur dead pixel ke liye kabhi nahin. Dead pixel ke sub-pixels hamesha ke liye off hote hain, jise software theek nahin kar sakta. Stuck pixel kabhi-kabhi ek sub-pixel hota hai jo ek hi state mein atka ho, aur tez colour changes use jhaTka dekar chhuDa sakte hain, par asar bharosemand nahin: ismein minutes lag sakte hain, baad mein utar sakta hai, aur aksar kuch hota hi nahin. Exerciser ko aakhri koshish maniye, kuch minute baad ruk jaaiye, aur screen ko dabaiye mat. Agar flashing lights aap par asar karti hain, to ise kabhi use na kijiye.
Dead Pixel Test mein refresh rate measurement ka kya matlab hai?
Ye lagbhag do second ke animation frames ko time karta hai, frames ke beech ka typical gap leta hai aur result ko nazdeeki standard rate, jaise 60, 120 ya 144 Hz, par snap kar deta hai jab wo 3 percent ke andar ho. Ye figure wo rate hai jo ye tab asal mein paata hai, isliye browser cap, battery saver ya apni maximum se neeche set kiya monitor ise kam kar dega. Jitter value dikhati hai ki frames kitni barabari se aate hain. Agar aapka monitor isse zyaada rate ka hai, to system ki display settings mein rate badhaiye aur dobara naapiye.
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Color Blind Test — Ishihara-style dot plates se apni color vision jaanchiye aur aasaan bhasha mein result paaiye.
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