PDF24 對比 WhiskFile
PDF24 提供了非常慷慨的免費層級，幾乎無限制的使用量並附帶桌面應用程式，但其介面設計過時且缺乏 AI 功能。WhiskFile 則是用部分免費使用量來換取更優質的使用者體驗與 AI 功能。
- 專為速度設計的現代化簡潔 UI
- 提供 Pro 使用者的 AI 功能（摘要、對話、遮蔽）
- 擁有 38 個端點的 REST API
- 所有方案皆無廣告
- 具備 9 種 PDF24 所沒有的獨家工具
- 近乎無限的免費使用量
- 桌面應用程式（支援離線使用）
- 提供 40 多種工具
- 無需訂閱
- 介面過時且雜亂——與現代工具相比使用者體驗較差
- 廣告支援——使用過程中會顯示廣告
- 完全沒有 AI 功能
定價
| 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
功能對比
| 功能 | WhiskFile | PDF24 |
|---|---|---|
| 簡潔現代化 UI | ||
| 無需帳號 | ||
| AI PDF 摘要 | Pro+ | |
| AI PDF 對話 | Pro+ | |
| REST API | Pro+ (38 endpoints) | |
| 依書籤分割 PDF | ||
| 貝茨編號 (Bates numbering) | ||
| 桌面應用程式 | ||
| 結構化資料 / Schema 標記 | ||
| 優先處理 | Pro+ | |
| 工具總數 | ||
| 輸出格式 | ||
| 檔案刪除政策 | ||
| 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 最適合用於
- 您想要更快速、更簡潔且不會造成認知負擔的介面
- 您需要 AI 功能
- 您正在處理敏感文件，並希望擁有無廣告的隱私環境
PDF24 最適合用於
- 您每天需要超過 7 次免費任務且不想付費
- 您需要透過桌面應用程式進行離線處理
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
常見問題
PDF24 可免費使用，但由廣告支援。它透過使用過程中顯示的廣告來獲利。目前沒有付費方案——其營收模式完全基於廣告。
WhiskFile 的使用者體驗顯著較佳，且具備 PDF24 完全缺乏的 AI 功能，其 REST API 對開發者也非常實用。如果您每天處理大量檔案且 7 次任務的免費限制造成困擾，每月 4.99 美元的 WhiskFile Pro 可移除所有限制且無廣告。
PDF24 提供桌面應用程式。在行動裝置上，WhiskFile 和 PDF24 皆為網頁瀏覽器工具，可在行動瀏覽器上運作。
結論
PDF24 在免費使用量方面難以超越——它透過廣告支援，提供近乎無限的任務處理。如果您每天處理大量檔案，且不介意廣告或過時的介面，PDF24 是強大的免費選擇。當您重視現代化介面、AI 功能、開發者 API 以及無廣告體驗時，WhiskFile 是更好的選擇。
Sources
- Tools homepage checked 2026-09-24
- Privacy policy checked 2026-09-24
- FAQ checked 2026-09-24
- Security info checked 2026-09-24
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