Best PDF24 Alternative: 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。
最後測試日期：July 2026 · 基於實際動手測試。
免費方案對比
| 功能 | WhiskFile | PDF24 |
|---|---|---|
| Daily task limit | 7 tasks per day | Near-unlimited (ad-supported) |
| Max file size | 50 MB | No stated limit (varies by tool) |
| Advertisements | None | Ads on free usage |
| Account required | No | No |
定價對比
| 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) |
為什麼要切換至 WhiskFile
- 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
PDF24 在以下情況依然勝出：
- 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
何時從 PDF24 切換至 WhiskFile
- 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
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.
Privacy & Security Comparison
| 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 & AI Features
OCR
- WhiskFile
- Free for all users
- PDF24
- Yes — completely free with no page or file limit
PDF24 offers the most generous free OCR among competitors — no restrictions
AI Features
- WhiskFile
- Pro+ (Chat, Summarize, Redact)
- PDF24
- None
PDF24 does not offer any AI-powered features
Cloud Integrations
| Integration | WhiskFile | PDF24 |
|---|---|---|
| Google Drive | On roadmap | |
| Dropbox | On roadmap | |
| OneDrive | On roadmap | |
| API access | Pro+ (38 endpoints) | Premium only (~€8.99/month) |
如何從 PDF24 切換
兩者皆為網頁版工具。WhiskFile 的免費層級涵蓋了大多數休閒使用者的需求（每天 7 次任務）。如果您經常達到上限，每月 4.99 美元的 Pro 方案可取代廣告支援模式，提供無限任務處理。
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.
Last reviewed: September 24, 2026
我們的評語
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。
常見問題
- PDF24 是完全免費的嗎？
- 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。
- 如果 PDF24 是無限且免費的，為什麼要選擇 WhiskFile？
- 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 有行動應用程式嗎？
- 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。
- Does PDF24 have AI features?
- No. PDF24 does not offer any AI-powered features — no PDF summarization, no chat with documents, no PII redaction. WhiskFile Pro includes all three.
- Is PDF24 safe to use?
- PDF24 is a German company (Geek Software GmbH) with EU data residency. Web tools process files server-side; the desktop app processes locally. Their privacy policy states web files are deleted within 1 hour, similar to WhiskFile.
- Can I use PDF24 on Mac?
- PDF24's desktop app is Windows-only. The web tools work on any OS including Mac. WhiskFile is browser-based and works on all platforms without installation.
- Does PDF24 have a REST API?
- PDF24 does not offer a free REST API. An API is available through a Premium plan (~€8.99/month). WhiskFile Pro includes a REST API with 38 endpoints at $4.99/month.
- Which has better OCR — WhiskFile or PDF24?
- Both offer free OCR. PDF24's OCR has no file or page limit — the most generous free OCR among competitors. WhiskFile OCR supports 100+ languages and includes AI-enhanced OCR on Pro. PDF24 has the edge for volume; WhiskFile has the edge for accuracy and language support.
- Why does PDF24's UI look outdated?
- PDF24 focuses on functionality over design. Its ad-supported model hasn't prioritized UI investment. WhiskFile was designed ground-up with a modern interface, dark mode, and responsive layouts.
Sources
- Tools homepage checked 2026-09-24
- Privacy policy checked 2026-09-24
- FAQ checked 2026-09-24
- Security info checked 2026-09-24