File Extension kya hai ?

 File Extension

File Extension (फ़ाइल एक्सटेंशन) ek chhota naam hota hai jo file ke end me dot (.) ke baad likha jata hai, jisse computer ya mobile ko pata chalta hai file ka type kya hai aur kaunse software se open karna hai.

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💡 Simple Definition:

File extension ek suffix (.) ke baad likha code hota hai jo file ka format batata hai.

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📘 Example:

File Name	Extension	Matlab	Open With
photo.jpg	.jpg	Image File	Photos App
song.mp3	.mp3	Audio File	Music Player
resume.pdf	.pdf	Document File	PDF Reader
data.xlsx	.xlsx	Excel Sheet	MS Excel
notes.txt	.txt	Text File	Notepad

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🧩 File Extension ka Kaam:

1. File ka type batata hai (text, image, audio, video, etc.)

2. Computer ko batata hai kaunsa program file khol sakta hai.

3. User ko samajh deta hai file ke content ke baare me.

4. Security me madad karta hai, kyunki galat file open hone se bacha sakta hai.

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🖊️ Example samjho:

Agar tumhare paas photo.jpg hai to system samjhta hai ye image file hai.
Agar resume.pdf hai to system samjhta hai ye document file hai.

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🌟 File Extension – Full Explanation in Simple Hinglish

🔹 1. File Extension kya hoti hai?

File extension ek chhota code hota hai jo file ke naam ke end me dot (.) ke baad likha jata hai.
Ye code batata hai ki file kis type ki hai aur kaunse software se open hogi.

🧩 Example:

• photo.jpg → Image File

• resume.pdf → Document File

• song.mp3 → Audio File

• video.mp4 → Video File

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🔹 2. File Extension ka Full Form:

Extension ka matlab hota hai “badhao ya addition.”
Yaani file ka naam + uska type.
Jaise — photo.jpg me photo naam hai aur .jpg uska extension hai.

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🔹 3. File Extension ka Main Kaam:

No.	Kaam	Vyakhya
1️⃣	File type batana	Batata hai file text, image, video ya audio hai.
2️⃣	Software select karna	System ko help karta hai file open karne ke liye sahi program choose karne me.
3️⃣	Security provide karna	Harmful ya galat files ko identify karne me madad karta hai.
4️⃣	Easy identification	User easily samajh jata hai file kis type ki hai.

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🔹 4. Common File Extensions aur Unka Use:

📘 Document Files

Extension	File Type	Open With
.txt	Text File	Notepad
.doc / .docx	Word Document	MS Word
.pdf	PDF File	Adobe Reader
.ppt / .pptx	Presentation	PowerPoint
.xls / .xlsx	Excel Sheet	MS Excel

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🖼️ Image Files

Extension	File Type	Open With
.jpg / .jpeg	Image File	Photos App
.png	Transparent Image	Photoshop
.gif	Animated Image	Browser
.bmp	Bitmap Image	Paint
.svg	Vector Graphic	Illustrator

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🎵 Audio Files

Extension	File Type	Open With
.mp3	Audio File	Music Player
.wav	Sound File	Audacity
.m4a	Apple Audio	iTunes
.ogg	Compressed Audio	VLC Player

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🎥 Video Files

Extension	File Type	Open With
.mp4	Video File	VLC
.avi	Old Video Format	Windows Player
.mkv	High Quality Video	VLC
.mov	Apple Video	QuickTime

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💾 Compressed Files

Extension	File Type	Open With
.zip	Compressed File	WinRAR / 7Zip
.rar	Compressed File	WinRAR
.iso	Disk Image File	Daemon Tools

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🌐 Web Files

Extension	File Type	Open With
.html / .htm	Web Page	Browser
.css	Styling File	Code Editor
.js	JavaScript File	Browser
.php	Web Script	Server (XAMPP)

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🔹 5. File Extension Dekhne ka Tarika (Windows me):

1️⃣ File Explorer kholo
2️⃣ Top bar me “View” pe click karo
3️⃣ File name extensions option pe ✅ tick karo
→ Ab har file ke naam ke aage uska extension dikhega

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🔹 6. Extension Change Karne se Kya Hota Hai?

Agar tum extension galat badal dete ho (e.g. photo.jpg → photo.mp3),
to file open nahi hogi, kyunki system confuse ho jata hai ki file kis format me hai.

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🔹 7. Example Samjho:

photo.jpg → image file
resume.pdf → document file
song.mp3 → music file
video.mp4 → video file

Har file ka apna alag extension hota hai, jo batata hai file kis purpose ke liye bani hai.

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