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Lindungi PDF Online
Tambahkan perlindungan kata sandi ke PDF secara online gratis. Enkripsi AES berarti file tidak dapat dibuka tanpa kata sandi. Lindungi kontrak, slip gaji, dan catatan.
Tentang alat Lindungi PDF
Protect PDF encrypts a document with a password so it cannot be opened by anyone who does not have it. This is real AES encryption applied to the file itself, not a soft lock: the protection travels with the file, working the same in Adobe Reader, browsers, phones and email attachments. Use it before sending payslips, contracts, medical records, financial statements or any document with personal data over email or messaging apps - email itself is not encrypted, so a password on the attachment is the practical safeguard. Choose a strong password and share it through a different channel than the file (for example, send the PDF by email and the password by phone or text message).
Cara menggunakan Lindungi PDF
- Buka alat dan tambahkan file, teks, atau nilai Anda.
- Tinjau opsi yang tersedia seperti rentang halaman, format keluaran, kualitas, kata sandi, atau bahasa.
- Mulai proses dan biarkan jendela browser terbuka sampai selesai.
- Unduh hasilnya dan lanjutkan dengan alat terkait jika perlu.
Tips berguna
- Untuk PDF hasil pindai, alat dengan dukungan OCR menjalankan pengenalan teks secara otomatis jika memungkinkan.
- Untuk file besar, gunakan alat kompresi sebelum membagikan lewat email atau mengunggah ke portal.
- Untuk hasil terbaik, unggah file bersih dengan ekstensi yang benar dan hindari dokumen rusak.
When to password-protect a PDF
Sending payslips, tax documents or bank statements by email - attachments are frequently forwarded and mailboxes get breached.
Sharing contracts and agreements that contain personal data, pricing or terms not meant for third parties.
Storing scans of passports, IDs and certificates in cloud folders that other people or apps can access.
Pertanyaan yang sering diajukan
How strong is the protection?
The file is encrypted with the AES standard used by PDF readers. Without the password the content cannot be read; there is no backdoor or recovery, so store the password safely.
Apa yang terjadi jika saya lupa kata sandi?
The document cannot be recovered without it - that is the point of encryption. Keep a copy of the password in a password manager, or keep an unprotected copy in a safe location.
Will the password work in all PDF readers?
Yes. Password protection is part of the PDF standard, so Adobe Reader, browser viewers, macOS Preview and mobile apps all prompt for the password before opening the file.
Can I remove the password later?
Yes. Use the Unlock PDF tool with the correct password to produce an unprotected copy.
Should I email the password together with the file?
No. Sending both through the same channel defeats the purpose. Share the password through a second channel, such as a text message or phone call.
Apakah Lindungi PDF gratis?
Yes. Encryption is free, with no signup and no watermark.