PDF24 对比 WhiskFile
PDF24 提供非常慷慨的免费层级，几乎不限使用次数并提供桌面应用程序，但其用户界面陈旧且没有任何 AI 功能。WhiskFile 则以牺牲部分免费使用量为代价，换取了显著提升的用户体验和 AI 功能。
- 专为速度设计的现代、简洁 UI
- 面向 Pro 用户的 AI 功能（总结、聊天、脱敏）
- 包含 38 个端点的 REST API
- 所有方案均无广告
- 拥有 9 款 PDF24 所不具备的独家工具
- 近乎无限的免费使用量
- 桌面应用程序（支持离线使用）
- 提供 40 多种工具
- 无需订阅
- 界面陈旧且杂乱——与现代工具相比用户体验较差
- 广告支持——使用过程中会显示广告
- 完全没有任何 AI 功能
定价
| 方案 | WhiskFile | PDF24 |
|---|---|---|
| Free tier | Free — 7 tasks/day, 50 MB | Free — very generous, near-unlimited |
| Paid | $4.99/month Pro | Free (no paid plan — revenue from ads) |
Pricing checked on: September 24, 2026. PDF24 pricing page
功能对比
| 功能 | WhiskFile | PDF24 |
|---|---|---|
| 简洁现代的 UI | ||
| 无需注册账号 | ||
| AI PDF 总结 | Pro+ | |
| AI PDF 聊天 | Pro+ | |
| REST API | Pro+ (38 endpoints) | |
| 按书签拆分 PDF | ||
| 贝茨编号 (Bates numbering) | ||
| 桌面应用程序 | ||
| 结构化数据 / Schema 标记 | ||
| 优先处理 | Pro+ | |
| 工具总数 | ||
| 输出格式 | ||
| 文件删除策略 | ||
| 平台 | ||
| AI Contract Analysis | Pro+ | |
| Document Workspace (folders, tags, search) | ||
| Total tools | 101 | 40+ |
| Output formats | 20+ (PDF, Word, Excel, PPT, JPG, PNG, etc.) | ~15 formats |
| File deletion policy | Auto-deleted after 1 hour | Not clearly disclosed |
| Platform | Any browser (no install) | Browser + desktop app (Windows) |
WhiskFile 最适合
- 您想要一个更快、更简洁且不会造成认知负担的界面
- 您需要 AI 功能
- 您正在处理敏感文档，并希望获得无广告的隐私保护
PDF24 最适合
- 您每天需要超过 7 次免费任务处理且不想付费
- 您需要通过桌面应用程序进行离线处理
Which Features Matter?
If you process large PDFs
- Maximum file size limits
- Page count restrictions
- Processing speed
- Batch processing support
If you process scanned documents
- OCR availability and accuracy
- Supported OCR languages
- Searchable PDF output
- Free vs paid OCR access
If privacy matters
- Browser vs server processing
- File retention and deletion
- Encryption standards
- Privacy documentation
Common Workflows Compared
Merge multiple PDFs
Upload → reorder → Merge → download. Modern drag-and-drop, no ads.
Upload → reorder → Merge → download. Free and unlimited, but with ads.
Compress a large PDF
Upload → choose compression level → download. Clean UI.
Upload → auto-compress → download. Free, no limit, but dated interface.
Convert PDF to Word
Upload PDF → auto-converts → download DOCX. Free, no ads.
Upload → converts → download. Free, unlimited, ads shown.
OCR a scanned PDF
Upload → OCR → searchable PDF. Free, 100+ languages.
Upload → OCR → searchable PDF. Completely free, no page or file limit.
Sign a PDF
Upload → draw/type signature → place → download. Modern UI.
Not directly available as a dedicated tool on PDF24 web.
At a Glance
WhiskFile focuses on
- Modern, clean user interface
- AI-powered PDF workflows
- Developer REST API
- Ad-free experience
PDF24 focuses on
- Broad free PDF utilities
- Desktop app (Windows)
- Near-unlimited free usage
- Ad-supported model
Privacy & Security
| Privacy aspect | WhiskFile | PDF24 |
|---|---|---|
| Browser processing | Yes — most tools (69 of 101) | No — server-side processing for web tools (EU servers); desktop app processes locally |
| File retention | Auto-deleted after 1 hour | Auto-deleted within 1 hour (web tools); desktop app processes locally |
| Encryption | TLS 1.3 in transit, AES-256 at rest | Not publicly specified |
| GDPR | Compliant | German company (Geek Software GmbH) — EU data residency |
OCR (Optical Character Recognition)
| OCR feature | WhiskFile | PDF24 |
|---|---|---|
| OCR available | true | |
| Free access | Yes — free for all users | Yes — completely free with no page or file limit |
| Languages | 100+ languages | Not publicly specified |
| Searchable PDF output | ||
| Batch OCR | Pro+ | Limited batch on web; desktop app supports batch via virtual printer |
PDF24 offers the most generous free OCR among competitors — no restrictions
AI-Powered Features
| AI feature | WhiskFile | PDF24 |
|---|---|---|
| Chat with PDF | Pro+ | |
| Summarization | Pro+ | |
| Question answering | Pro+ | |
| PII auto-redaction | Pro+ | |
| Translation | Pro+ |
PDF24 does not offer any AI-powered features
Cloud Integrations
| Integration | WhiskFile | PDF24 |
|---|---|---|
| Google Drive | On roadmap | |
| Dropbox | On roadmap | |
| OneDrive | On roadmap | |
| URL import | ||
| API access | Pro+ (38 endpoints) | Premium only (~€8.99/month) |
No direct cloud storage integrations; files must be uploaded manually
Account Requirements
WhiskFile
No — first 3 tasks without account, up to 7/day with free account
PDF24
No — no account or signup required
Supported File Formats
WhiskFile (20 formats)
PDF24 (14 formats)
How We Compare PDF Tools
We compare publicly documented features, limits, pricing, supported formats, integrations, account requirements, and privacy information. Competitor information can change, so pricing and limits should be checked against the provider's current documentation. Information marked “Not publicly specified” means we could not verify it from the competitor's official sources at the time of review.
Last reviewed: September 24, 2026
常见问题
PDF24 可以免费使用，但有广告支持。它通过使用过程中显示的广告来获利。它没有付费方案——其收入模式完全基于广告。
WhiskFile 的用户体验要好得多，它拥有 PDF24 完全缺失的 AI 功能，且 REST API 对开发者非常有用。如果您每天处理大量文件且 7 次免费任务的限制对您造成了困扰，每月 4.99 美元的 WhiskFile Pro 可以移除所有限制且无广告。
PDF24 有桌面应用程序。在移动端方面，WhiskFile 和 PDF24 都是基于浏览器的工具，可以在移动浏览器上使用。
结论
在免费使用量方面，PDF24 很难被超越——它依靠广告支持，提供近乎无限的任务处理。如果您每天处理大量文件，且不介意广告或陈旧的界面，PDF24 是一个强大的免费选择。当您看重现代化的界面、AI 功能、开发者 API 以及无广告体验时，WhiskFile 是更好的选择。
Sources
- Tools homepage checked 2026-09-24
- Privacy policy checked 2026-09-24
- FAQ checked 2026-09-24
- Security info checked 2026-09-24
准备好试用 WhiskFile 了吗？
开始免费使用——每天 7 个任务，无需账号，无需信用卡。
浏览所有工具