PDF转换器，极致压缩 vs PDF Compressor

QPDF 是一款强大的本地 PDF 转换与处理工具，支持扫描文档、图片转 PDF、压缩、添加水印、合并多个 PDF、OCR 文字识别等功能。所有处理均在设备本地完成，您的文件安全无忧。 核心功能】 扫描文档 - 使用相机智能扫描纸质文档，自动检测边缘 - 扫描结果一键转为高质量 PDF 图片转 PDF - 从相册选择多张图片，快速生成 PDF - 支持拖拽排序，自由调整页面顺序 - 支持 A4、Letter、自适应三种页面尺寸 PDF 压缩 - 智能压缩算法，有效减小文件体积 - 低/中/高三档质量可选，实时预览压缩效果 - 压缩前后大小对比，一目了然 添加水印 - 支持文字水印，自定义内容、字号、透明度、颜色 - 对角线/居中/平铺三种布局模式 - 实时预览水印效果，所见即所得 合并 PDF - 选择多个 PDF 文件，拖拽排序后一键合并 - 合并后可继续添加水印或压缩 OCR 文字识别 - 从图片中提取文字，支持复制和分享 - 支持中英文识别 【产品特点】 - 纯本地处理：所有文件操作在设备上完成，数据不上传云端 - 零第三方依赖：无广告、无追踪、无数据收集 隐私承诺 我们不收集任何个人数据。无分析工具。无广告。您的数据只属于您。 - 隐私政策：https://grandiose-money-076.notion.site/QPDF-33d87ce015a0806e8cfde01a5aa4946b - 使用条款：https://grandiose-money-076.notion.site/QPDF-33d87ce015a08082a27ec7d924862ff1

PDF Compressor is a fast, simple, and privacy-focused tool for reducing PDF file size on your iPhone and iPad. — COMMON PROBLEMS WE SOLVE — • Application system says "PDF must be under 2MB" but yours is 8MB • Exam registration (civil service, teaching certification, GRE, IELTS) requires smaller PDFs • Visa and passport scans are too large for embassy upload portals • Email attachments exceed the 25MB limit • Contracts, invoices, and resumes need to be smaller for sharing • Academic journal submission systems have strict PDF size limits If any of these sound familiar, PDF Compressor can fix it in seconds. — KEY FEATURES — COMPRESS TO A SPECIFIC TARGET SIZE Choose your target and let the app handle the rest: • 500KB — For strict application forms • 1MB — For exam registrations • 2MB — Most common, works for most upload systems • 5MB — For visa and passport documents • 10MB — For email attachments and file sharing • Custom — Set any target size you need CLEAR RESULTS • See original size vs. compressed size • View compression ratio (e.g., reduced by 78%) • Know immediately if your target was met • Preview the compressed PDF to verify readability SAVE & SHARE • Save to iCloud Drive, local folders, or other locations • Share via Messages, Mail, AirDrop, or any app • Smart file naming for easy organization • Batch compress multiple PDFs with Pro — PRIVACY FIRST — PDF Compressor processes everything on your device. Your PDF files are never uploaded to any server. We don't read, store, or share your file content. No third-party analytics, no ad tracking, no data collection. — PLEASE NOTE — Compression results vary by PDF type: • Scanned / image-heavy PDFs — Typically see 50%–90% size reduction • Text-only PDFs — Already small; limited compression possible • If the target isn't met, try a larger target — PDF COMPRESSOR PRO — Free users can compress up to 1 time per day. Upgrade to Pro for: • Unlimited PDF compression • Custom target sizes • Batch compression for multiple PDFs • Ad-free, distraction-free experience Choose from flexible options: a one-time purchase Lifetime Pro (unlocked forever), or flexible Monthly Pro and Yearly Pro auto-renewable subscription plans. — IN-APP PURCHASES & SUBSCRIPTIONS TERMS — • Plans and Billing: Monthly Pro and Yearly Pro are auto-renewable subscriptions. Lifetime Pro is a one-time purchase. Actual prices are shown on the App Store product page and purchase sheet. • Auto-Renewal: Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions will automatically renew at the same price and duration unless auto-renew is turned off at least 24 hours before the end of the current billing period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the cost of the chosen plan. • Manage Subscriptions: You can manage your subscriptions and turn off auto-renewal at any time by going to your App Store Account Settings after purchase. • Restore Purchases: If you have previously unlocked Pro, you can reactivate it by clicking "Restore Purchases" on the paywall or settings screen. • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions or feedback? Reach us through Settings > Contact Us.