PDF محفوظ کریں
نیاPassword-protect your PDF
PDF محفوظ کریں کو کیسے استعمال کریں
- 1ایک PDF اپ لوڈ کریں
- 2پاس ورڈ درج کریں اور تصدیق کریں
- 3PDF محفوظ کریں پر کلک کریں
- 4محفوظ فائل ڈاؤن لوڈ کریں
PDF محفوظ کریں کے بارے میں
PDF محفوظ کریں pdf-lib استعمال کر کے آپ کے دستاویز کو پاس ورڈ سے انکرپٹ کرتا ہے۔ وصول کنندگان کو فائل کھولنے کے لیے پاس ورڈ چاہیے۔ کوئی فائل اپ لوڈ نہیں ہوتی — سب کچھ آپ کے براؤزر میں ہوتا ہے۔
PDF محفوظ کریں کی اہم خصوصیات
- Fast and accurate Protect Pdf processing
- No installation required — works in browser
- Free to use with no limitations
- Privacy-focused — data never leaves your device
- Mobile and desktop compatible
- Instant results with live preview
- No watermarks or content changes applied
- No account or installation required
معاون فارمیٹس
ان پٹ فارمیٹس
آؤٹ پٹ فارمیٹس
Only user (open) password protection is applied. The PDF must not already be encrypted — unlock it first if needed.
مثالیں
Protect a contract before emailing
Add a password to a PDF contract so only the intended recipient can open it.
ان پٹ
Unprotected contract PDF
آؤٹ پٹ
Password-protected PDF — recipients need the password to open
Secure a financial report
Encrypt a sensitive financial PDF before uploading to a shared drive.
ان پٹ
Financial report PDF
آؤٹ پٹ
Encrypted PDF with password access control
عام استعمال کے معاملات
- Professional Protect Pdf tasks
- Quick everyday calculations
- Educational purposes and learning
- Business and workplace productivity
- Personal projects and hobbies
- Securing academic thesis drafts during external review
مسئلہ حل کرنا
Unexpected results
حل
Double-check your input format and ensure all required fields are filled correctly.
Tool not working
حل
Clear browser cache and refresh. Ensure JavaScript is enabled.
Trying to protect a PDF that is already password-protected
حل
Unlock the PDF first with the Unlock PDF tool to remove the existing password, then add the new one.
اکثر پوچھے جانے والے سوالات
کیا انکرپشن سرور پر ہوتی ہے؟
نہیں۔ pdf-lib مکمل طور پر آپ کے براؤزر میں فائل انکرپٹ کرتا ہے۔
اگر پاس ورڈ بھول جاؤں تو؟
کوئی بازیابی نہیں ہے۔ اپنا پاس ورڈ محفوظ جگہ رکھیں۔
What encryption algorithm is used?
pdf-lib applies RC4 128-bit encryption, which is the standard user-password protection scheme supported by Adobe Acrobat, macOS Preview, and all major PDF viewers.
Can I restrict printing or copying while still allowing opening?
Currently only user (open) password protection is supported. Owner permission restrictions — such as disabling printing or text copying — are not separately configurable in this tool.
Will password protection work in all PDF readers?
Yes. Standard PDF user password encryption is a core part of the PDF specification and is supported by Adobe Acrobat, macOS Preview, browser PDF viewers, mobile apps, and all major PDF software.
Can I protect a PDF that already has a password?
No. The tool requires an unprotected PDF as input. Use the Unlock PDF tool to remove the existing password first, then apply the new password.
Can the password contain spaces or special characters?
Yes. Any printable character is allowed including spaces, punctuation, and symbols. Avoid extremely unusual Unicode characters for maximum compatibility across PDF readers.
What is the maximum password length?
Standard PDF encryption supports passwords up to 32 characters. For strong security, use at least 12 characters combining uppercase letters, lowercase letters, numbers, and symbols.