--- title: "lock and unlock pdf - pdfsmith - Reviews, Revenue and Downloads in Suriname | Apple App Store" description: "Secure your documents with confidence using PDFSmith, a fast and privacy-first PDF security tool that lets you lock PDFs, unlock PDFs, add passwords, remove password protection, and change PDF passwor" --- # lock and unlock pdf - pdfsmith — Suriname > Add, Remove password to PDF ![Lock and unlock pdf App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f2/0e/48/f20e4896-5d80-ec57-a324-312fc98ec450/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png) **Developer:** [Nikhil Reddy Avuthu](https://apptail.io/developer/nikhil-reddy-avuthu-enjLb) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.byanr.pdfsmith **Store:** Apple App Store **Country:** Suriname **Version:** 1.2.6 (released 2026-08-23) **Original Release:** 2026-01-05 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/sr/app/app/id6757205450) **AppTail Page:** [https://apptail.io/app/lock-and-unlock-pdf-pdfsmith-RwIz/suriname](https://apptail.io/app/lock-and-unlock-pdf-pdfsmith-RwIz/suriname) ## Lock and unlock pdf Description Secure your documents with confidence using PDFSmith, a fast and privacy-first PDF security tool that lets you lock PDFs, unlock PDFs, add passwords, remove password protection, and change PDF passwords — all fully offline on your device. No uploads. No cloud processing. Your files never leave your phone. Unlock Password-Protected PDFs Remove password protection from PDFs when you know the correct password Instantly unlock PDFs for viewing, editing, or sharing Password is required — PDFSmith does not bypass or crack encryption Lock PDFs with a Password Add a password to unprotected PDF files Secure sensitive documents before sharing Protect PDFs instantly with strong encryption Fast, Offline & On-Device 100% offline PDF processing No internet connection required Instant results with no waiting Privacy-First by Design Files are processed entirely on your device No uploads to servers No data collection or tracking Save & Share Easily Save locked or unlocked PDFs instantly Share securely using your device’s share options Perfect For Professionals handling confidential documents Students and educators Travelers and offline environments Anyone who values privacy and control Key Features Lock PDF with password Unlock PDF with password Add password to PDF Remove password from PDF (password required) Offline PDF security On-device PDF processing PDFSmith delivers professional-grade PDF security — fast, private, and completely under your control. ## Lock and unlock pdf Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8d/44/d2/8d44d281-9b5f-2595-3dc7-d6ca819c34aa/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_06.43.47.png/2064x2752.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e0/72/5b/e0725b82-644f-5d6f-0422-2a0680806898/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_07.40.32.png/2064x2752.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b7/cd/e9/b7cde9fc-bed1-d9cf-2f96-f2b8c37adefd/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_07.40.38.png/2064x2752.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bd/61/ca/bd61caff-18d7-9494-71d0-7ff11488d384/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_06.43.43.png/2064x2752.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1b/6c/85/1b6c851f-5bfd-056a-23e2-c48bfdef59f4/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_07.11.01.png/2064x2752.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/72/a5/98/72a598a0-54fc-6c88-7ae7-75fa22980551/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_07.11.22.png/2064x2752.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/bf/68/05/bf680544-b79c-1ee0-c25e-3a550f5bfd3d/Simulator_Screenshot_-_iPad_Pro_13-inch__U0028M5_U0029_-_2026-01-01_at_07.39.51.png/2064x2752.png) ## Lock and unlock pdf Available In - [Pakistan](https://apptail.io/app/lock-and-unlock-pdf-pdfsmith-RwIz/pakistan) - [Suriname](https://apptail.io/app/lock-and-unlock-pdf-pdfsmith-RwIz/suriname) - [United States](https://apptail.io/app/lock-and-unlock-pdf-pdfsmith-RwIz/united-states) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*