PDF Locker & Unlocker

PDF Locker adds password protection to a PDF (encrypts it). PDF Unlocker removes password protection (decrypts it). Both are in the same tool — just switch tabs.

Yes — 100% free, forever. No signup, no email, no watermark, no daily limit, no file-size cap. Process as many PDFs as you want.

Completely. Everything happens locally in your browser. Your file and passwords never leave your device. Verify with Developer Tools → Network tab — zero outgoing requests.

Yes — that's exactly how this tool works. The PDF never leaves your device. All encryption happens in your browser using JavaScript.

User password is required to open the PDF (everyone needs it). Owner password unlocks full access, including permissions you restricted (like printing or copying). If you don't set an owner password, the user password is used as the owner password too.

Yes — after setting a password, you can uncheck "Allow printing" or "Allow copying text." Most PDF readers will respect these restrictions (though determined users can bypass them with specialized tools).

First 4 letters of your name in CAPITAL letters + your birth year. Example: name "Deepak" born 1998 → password DEEP1998. If your name has fewer than 4 letters, use the full name.

Your Date of Birth in DDMMYYYY format. Example: DOB 15 January 1998 → password 15011998. If that doesn't work, try the PAN number itself or a combination of PAN + DOB.

No. PDF encryption is strong — without the password, the file can't be decrypted (that's the whole point of the security). If you've lost the password, contact the original sender, or try common formats listed above. There is no "bypass" for a truly strong password — anyone claiming otherwise is either scamming you or using brute-force tools that take days.

No. The PDF remains valid and opens normally in Adobe Reader, Chrome, Firefox, and every modern PDF reader. Only the password protection is added — content stays intact.

No — never. DocEasy produces clean, watermark-free output. Your PDF looks identical to the original, just password-protected.

No. If a PDF has permissions restrictions (like "no printing"), removing them requires the owner password. Enter it in the Unlock tab to save a fully unrestricted PDF.

No hard limit. Practical limits depend on device RAM: 4 GB RAM handles ~200 MB, 8 GB handles 500 MB, 16 GB handles 1 GB+. Chrome and Edge perform best.

Yes — scanned PDFs (which are essentially images inside a PDF) can be locked and unlocked exactly like text PDFs. The processing is identical.

Not in this version — one file at a time. For batch processing, use a desktop tool like QPDF or a PDF utility. This tool is optimized for quick, one-off tasks.

Yes — after loading once, the tool works fully offline. Since processing is local, no internet is needed. Load the page, disconnect, and process PDFs freely.

Chrome 90+, Edge 90+, Firefox 88+, Safari 14+, Brave, Opera, Vivaldi. Chrome and Edge offer the best performance for large files.

Yes — everything you lock or unlock is yours to use freely, including commercially. No watermarks, no attribution, no restrictions on the output.

Double-check the password. Common issues: extra spaces, wrong case (CAPS vs lowercase), wrong format (DDMMYYYY vs MMDDYYYY), or a truly different password set by the original sender. Try the common patterns listed above — they cover 90% of Indian PDFs.

AES encryption (which we use) is strong — modern computers can't brute-force it in any reasonable time. However, if the password is weak (like "1234"), a dictionary attack can guess it. Use a strong password: 8+ characters with mixed case, numbers, and symbols.

No — locked PDFs must be unlocked first before adding digital signatures, form fields, or edits. Plan your workflow accordingly: sign first, then lock.

If the source PDF is corrupted, both lock and unlock will fail. Try opening it in a desktop PDF reader first to verify it works. If it opens fine there but fails here, report the file via the "Report Error" link.

No. We don't log filenames, passwords, or content. Our analytics only records anonymous page views — never file activity. Since nothing leaves your browser, there's nothing to log.

Yes — works on Android and iOS. The interface is touch-friendly. For very large PDFs, mobile devices have less RAM, so files under 100 MB work best.

Adobe Acrobat offers advanced features (certificate-based encryption, digital signatures). DocEasy uses AES-256 password encryption — the same algorithm Adobe uses for basic password protection. For 99% of use cases, DocEasy's encryption is more than sufficient.