01 · Privacy and Security
因为它 100% 隐私且安全 您的文档完全归您所有。在桌面应用中打开的 PDF 以及在 51 款在线工具中处理的文件都留在您的设备上,绝不会上传给我们。我们不使用分析、追踪或广告,也绝不要求您注册账号。当您向 AI 提问时,去向由您决定:本地 AI(Ollama 或 LM Studio)在您的电脑上 100% 离线运行,不发送任何数据;OxnaAI 仅将您的问题和段落发送至 Cloudflare Workers AI,不留日志且不用于模型训练;或者您也可以直接连接自己的 ChatGPT 或 Claude 账号。
由于 PDF 应用会打开来自各处的文件,我们以攻击者的视角对 OxnaPDF 进行安全测试。PDF 无法在 OxnaPDF 内执行 JavaScript,每个窗口都封装在独立沙盒中,密文涂黑会从文件中永久删除底层文本和图像而不只是遮盖,且所有编辑始终另存为新副本以保持原件完好。OxnaPDF 的每个部分均采用 Cloudflare 公开的安全审计方法进行审计,并在发布前由多个 AI 模型独立审查。
OxnaAI (the default) Our AI service -> Cloudflare Workers AI (GLM 5.3 Flash) No copy kept · No logs · No training If Cloudflare cannot answer: OpenAI, with storage turned off No training · Deleted within 30 days Question and passage only Your Device PDFs, notes, highlights, signatures Redactions and saved copies Library and 51 browser PDF tools Local AI Stays on your computer Nothing is sent. Question and passage only ChatGPT or Claude Straight from your computer to OpenAI or Anthropic Your own account · We never see it OxnaAI (the default) Our AI service -> Cloudflare Workers AI No copy kept · No logs · No training Backup: OpenAI, with storage turned off Your question and the passage Your Device PDFs, notes, highlights, signatures, redactions Library and 51 browser PDF tools Local AI Stays on your computer Nothing is sent. Your question and the passage ChatGPT or Claude Straight from your computer to OpenAI or Anthropic Your own account · We never see it 01 Security-Audit Method AI connector 5 Nov 2026 · No confirmed issues Hosted sign-in and accounts 5 Nov 2026 · Fixed the same day 02 Independent AI Reviewers Mistral Security and privacy review Grok Code structure and redesign review Qwen Engine, redaction, security and translations Claude Code check and final tests 03 Tested Before Release macOS (Apple silicon and Intel) Windows 11 Linux (x64 and ARM64) Published SHA-256 checksum 01 Security-Audit Method AI connector 5 Nov 2026 · No confirmed issues Hosted sign-in and accounts 5 Nov 2026 · Fixed the same day 02 Independent AI Reviewers Mistral: Security and privacy review Grok: Code structure and redesign review Qwen: Engine, redaction, security and translations Claude: Code check and final tests 03 Tested Before Release macOS (Apple silicon and Intel) Windows 11 Linux (x64 and ARM64) Published SHA-256 checksum 阅读完整证据: How Private · How Safe
02 · Measured Speed and Footprint
因为它更快、更轻巧 OxnaPDF 基于我们自主研发的 PDF 引擎构建,即点即开、绝不拖慢系统。我们在同一台 Mac(Apple M3 Max、36 GB 内存、macOS 26.7,预热后取 5 次运行中位数)上进行了 24 次交替启动测试,对比 OxnaPDF 1.11.17 与 Adobe Acrobat 26.002。OxnaPDF 打开 500 页报告快 23%(0.79 秒对比 1.02 秒),500 页报告后台处理完成快 78%(3.1 秒对比 14.0 秒,快 4.5 倍),4 页 PDF 后台完成快 88%(2.5 秒对比 21.0 秒,快 8.4 倍)。
在打开 500 页报告时,OxnaPDF 内存占用少 36%(445 MB 对比 694 MB;4 页 PDF 少 29%,为 356 MB 对比 498 MB)。在磁盘空间上,OxnaPDF 小 82%(300 MB 对比 1.7 GB)。当您退出 OxnaPDF 后,后台不会残留任何程序:0 个辅助进程(Acrobat 会留下 AdobeResourceSynchronizer)和 0 个后台更新服务(Acrobat 会安装 3 个)。
78% faster
Busy until quiet, 500-page report
3.1 s in OxnaPDF vs 14.0 s in Acrobat (4.5× faster)
88% faster on 4-page PDF: 2.5 s vs 21.0 s (8.4× faster)
23% faster
Window open on screen
0.79 s in OxnaPDF vs 1.02 s in Acrobat (500-page report)
23% faster on 4-page PDF too: 0.84 s vs 1.09 s (1.3× faster)
36% less memory
Memory, 500-page report open
445 MB in OxnaPDF vs 694 MB in Acrobat (249 MB lighter)
29% less memory on 4-page PDF: 356 MB vs 498 MB (142 MB lighter)
82% smaller
Size on disk and background footprint
300 MB in OxnaPDF vs 1.7 GB in Acrobat (5.7× smaller)
0 helpers left running after quit (vs 1) · 0 updater services (vs 3)
OxnaPDF 1.11.17 Adobe Acrobat (26.002) OxnaPDF Advantage Window open, 500-page report 0.79 s 1.02 s 23% faster 1.3× faster Busy until quiet, 500-page report 3.1 s 14.0 s 78% faster 4.5× faster Memory, 500-page report open 445 MB 694 MB 36% less memory 1.6× lighter Size on disk 300 MB 1.7 GB 82% smaller 5.7× smaller Left running after you quit Nothing (0) 1 helper 100% clean exit 0 left running Background services installed None (0) 3 (Acrobat updater) 100% fewer services 0 services OxnaPDF 1.11.17 Adobe Acrobat (26.002) Window open, 500-page report 23% faster 0.79 s 1.02 s Busy until quiet, 500-page report 78% faster 3.1 s 14.0 s Memory, 500-page report open 36% less memory 445 MB 694 MB Size on disk 82% smaller 300 MB 1.7 GB Left running after you quit 100% clean exit Nothing (0) 1 helper Background services installed 100% fewer services None (0) 3 (Acrobat updater) 查看全部 9 项实测数据与测试方法: How Fast
03 · Compared With Adobe Acrobat
因为每一项 Acrobat 付费功能都免费 Adobe 免费的 Acrobat Reader 仅支持查看、打印、批注和签名,而对人们最常用的核心工具收费。根据 Adobe 英国定价页面(2026 年 11 月 6 日,含税年付预缴方案),编辑 PDF 文本、转换为 Word/Excel/PowerPoint、整理页面和密码保护需要 Acrobat Standard(每月 £14.99 · 每年 £178.85);对比 PDF、OCR 文字识别和永久密文涂黑需要 Acrobat Pro(每月 £19.97 · 每年 £238.75);向 AI 提问文档内容则需要 Acrobat Studio(每月 £24.98 · 每年 £296.93)。以上所有功能在 OxnaPDF 中全部免费。
OxnaPDF 还具备 Adobe Acrobat 所不提供的能力:除 macOS 和 Windows 外的原生 Linux 应用(x64 与 ARM64)、无需联网的离线本地 AI、Gemini CLI 与 Google Antigravity 扩展,以及桌面端和全部 51 款在线工具均无需注册。Acrobat 领先的领域则是多方电子签名追踪、Web 表单、Adobe 云存储以及 iOS 和 Android 移动应用。
01 Adobe Acrobat Standard
£14.99 a month
£178.85 a year prepaid
100% free in OxnaPDF · Save £178.85 a year
Edit the text in a PDF Convert to Word, Excel and PowerPoint Organise pages: reorder, rotate, delete, split, combine Password-protect a PDF 02 Adobe Acrobat Pro
£19.97 a month
£238.75 a year prepaid
100% free in OxnaPDF · Save £238.75 a year
Everything in Standard, plus: 比较两个 PDF Make scanned pages searchable (OCR) Redact, so removed text is really gone 03 Adobe Acrobat Studio
£24.98 a month
£296.93 a year prepaid
100% free in OxnaPDF · Save £296.93 a year
Everything in Pro, plus: Ask AI about your document OxnaPDF £0 100% free
Every feature listed above is free in OxnaPDF, with no account and no subscription.
查看完整的功能逐项对比与信息来源: Compare to Acrobat
04 · How Oxna Works
因为它的架构让您始终掌握控制权 OxnaPDF 将设备端操作与网络请求严格隔离。无论您是在桌面应用中打开文档,还是将文件拖入任意一款浏览器工具,我们的 PDF 引擎都会在您电脑的内存中本地处理文件。您的 PDF 始终留在设备虚线边界之内。
除非您主动选择向在线 AI 提问,否则没有任何数据会跨越这一边界;即便提问,也仅发送您的问题和相关段落。您可以使用本地 AI 完全离线工作,无需账号通过 Cloudflare 网络使用 OxnaAI,或连接您自己的 ChatGPT、Claude 或 Gemini 账号。
浏览全部 6 张分步架构图: 工作原理
05 · How OxnaPDF Is Free
因为免费是我们的使命,而非陷阱 当一款软件免费时,人们自然会问它如何维持运营。OxnaPDF 没有广告、没有付费层级、也不出售数据,因为我们的成本从设计上就极低:无需养活庞大的工程团队(OxnaPDF 由 Fatih Kansoy 博士借助 AI 编程工具开发,并获 Google Antigravity for Science 项目支持),我们的 PDF 引擎为自主研发、无需转嫁第三方授权费,而本地 AI 或您自己的 ChatGPT 与 Claude 账号也不会给我们带来任何成本。
唯一的持续支出是用于网站、下载服务和 OxnaAI 每日合理额度的 Cloudflare 托管费用。OxnaPDF 是通过 Kansoy Ltd 运营的非营利项目,由公司直接承担这些托管成本,让每个人都能免费使用快速、私密且功能完整的 PDF 应用。
What Costs Us Nothing No engineering team: built by Dr Fatih Kansoy with AI coding tools Our own code: our own PDF engine and parts under free licences Your own AI plan: ChatGPT and Claude use your own account Local AI: runs on your computer What Costs Money Hosting on Cloudflare Website, downloads and OxnaAI with a fair daily allowance. Covered by Kansoy Ltd What Costs Us Nothing No engineering team: Dr Fatih Kansoy Our own code: our own PDF engine Your own AI plan: ChatGPT or Claude Local AI: runs on your computer What Costs Money Hosting on Cloudflare Website, downloads and OxnaAI Covered by Kansoy Ltd 阅读完整成本说明: How Free
浏览全部六个信任专页 以上每一项说明均有独立专页提供完整表格、架构图、测试方法与一手来源支持。