Zlen 扫描 vs PureScan

Zlen 文档扫描 是一款轻快、注重隐私的文档扫描工具，为 iPhone 与 iPad 而生。打开即可拍摄，一秒把纸质文件变成清晰、方正、可分享的 PDF。 【为什么选择 Zlen】 • 原生相机，满分辨率：直连 iOS AVCapturePhotoOutput，使用传感器的最高分辨率拍摄，字迹锐利不糊。 • 实时边缘识别：基于 Apple Vision 文档分割，对准纸张即刻描出四角轮廓，拍完自动裁边。 • 一键透视校正：自动把倾斜、变形的照片拉正，扫描件看起来像用专业扫描仪输出。 • 智能白底 & 去阴影:桌面纹理、光照不均、投影都能被自动抹平,纸面干净,文字黑得清爽。 • 多页合并 PDF：连续扫描多张,一键合并为单个 PDF 文件，方便归档与分享。 • 文件命名清晰：默认按日期自动命名（例如 Zlen_扫描_20260424_01），也可随时重命名。 • 本地处理,尊重隐私：全部图像处理在设备本地完成,不上传、不联网、不收集任何个人数据。 【适合谁用】 • 学生：快速扫描课堂笔记、书本页、作业，随手归档。 • 职场人士：合同、发票、报销凭证、会议白板——一拍即得专业 PDF。 • 自由职业者 / 创业者：随时把手写草图、名片、收据变成可发送的电子文档。 • 居家生活：扫描账单、说明书、保修卡，减少纸张堆积，一搜就能找到。 【核心功能】 • 实时四角检测与跟踪 • 自动触发拍摄（可关闭） • 手动四角微调 • 彩色 / 增强 / 黑白 三种输出模式 • 单页与多页 PDF 导出 • 系统分享菜单一键发送到邮件、微信、文件 App、云盘等 • 深色模式适配 • 全中文界面，针对中文文档优化 【隐私承诺】 Zlen 文档扫描 不收集、不上传、不追踪任何用户数据。所有扫描件与 PDF 仅保存在您自己的设备中，由您完全掌控。App 不含第三方广告 SDK、不含统计追踪 SDK。 【联系我们】 官网：https://z-len.net 意见反馈：card163@hotmail.com 让每一张纸，都能被妥善安放。立即下载 Zlen 文档扫描，开启你的无纸化办公。

PureScan —— Your truly private on-device document scanner, OCR text extractor, and digital file manager. Tired of expensive weekly subscriptions, intrusive pop-up ads, forced export watermarks, or worrying about confidential contracts and personal IDs uploaded to cloud servers? PureScan is crafted with a single mission: Absolute Privacy & Peak Efficiency. Every edge crop, OCR recognition, full-text index, and PDF encryption runs strictly on your iPhone via the Apple Neural Engine. No network connection, no cloud upload, and zero data tracking. 【Why Users Around the World Love PureScan】 • 100% On-Device Processing: Documents never leave your device. Works offline in airplane mode with zero mobile data consumption. • Instant Full-Text Search: Automatically indexes document content locally. Type any word to locate the exact page in milliseconds. • Professional Searchable PDF: Exports native PDFs with aligned invisible text layers for easy selection, copying, and desktop search. • Completely Clean & Honest: no subscriptions, zero ads, no export watermarks, and zero third-party analytics SDKs. 【Powerful Core Features】 1. Smart Document Camera: - Powered by Apple VisionKit for instant automatic edge detection and multi-page continuous capture. - Manual 8-point corner adjustment with a 2.5× precision magnifying loupe. 2. ID Card & Passport A4 Stitching: - Capture front and back sides of driver’s licenses, IDs, or passport cards with built-in visual guides. - Automatically arranges both sides onto a standard 1:1 scale A4 sheet for instant color or B&W printing. 3. Security Anti-Theft Watermarking: - Built-in presets such as "FOR OFFICIAL USE ONLY" and "CONFIDENTIAL COPY". - Full-bleed diagonal tiling with customizable color (Gray, Red, Blue) and opacity to prevent identity theft. 4. Quick Screenshot & Photo OCR: - One-tap quick extract on the home screen automatically loads your latest screenshot. - Pre-warmed neural engine ensures zero lag, instant recognition, and one-tap text copying. 5. Page Management & Fast Sharing: - Grid thumbnail view, drag-and-drop page reordering, single-page deletion, rescanning, and rotation. - Share or save individual pages instantly without sending unnecessary pages. 6. Document Categories & Smart Search: - Organize files with customizable category capsules on the home screen. - Search across document titles and OCR text with highlighted context snippets. 7. Multi-Format High-Quality Export: - Searchable PDF (with embedded text layer and zero white-edge fit). - Password-protected PDF with standard AES encryption. - High-resolution multi-page long image (JPEG) or raw TXT text. 【Perfect For】 • Business & Office: Contracts, expense receipts, NDAs, invoices, whiteboard notes. • Students & Educators: Lecture slides, study notes, book digitization, research papers. • Personal Records: IDs, passports, insurance cards, tax documents, warranty certificates. 【Our Privacy Promise】 • PureScan does not request internet access permissions. • Camera access is used solely for document capture; Photo Library access is requested only when saving images. • What's on paper stays on your iPhone. —— For support or feedback, please reach out via "More → Feedback & Suggestions" inside the app.