Sejda 对比 WhiskFile
Sejda 是一款功能强大的 PDF 工具套件，但其每小时 5 个任务的限制让许多用户感到沮丧——尤其是在工作流程进行到一半时。WhiskFile 提供每天 7 个免费任务，且没有每小时的频率限制，此外还拥有 Sejda 所不具备的 9 种额外工具以及 AI 功能。
- 每日限额（7 次/天）比每小时限额的干扰更小
- 9 种独家工具（按书签拆分、按文本拆分、贝茨编号等）
- AI 功能：PDF 摘要、PDF 对话、自动编辑个人身份信息 (Pro)
- 支持共享账单的团队工作区
- 包含 38 个端点的 REST API
- 提供桌面应用程序（Mac、Windows、Linux）
- 支持 28 种语言
- Pro 计划价格略低
- 拥有 10 多年用户基础的成熟产品
- 每小时 5 个任务的限制会阻碍批量工作流
- 无 AI 功能
- 无团队/组织计划
定价
| 方案 | WhiskFile | Sejda |
|---|---|---|
| Free tier | Free — 7 tasks/day, 50 MB | Free — 3 tasks/hour, 50 MB, 200 pages |
| Pro / Web subscription | $4.99/month or $39.99/year | ~$7.50/month or $63/year |
| Teams | $29/month (10 seats) | N/A (no team plan) |
Pricing checked on: September 24, 2026. Sejda pricing page
功能对比
| 功能 | WhiskFile | Sejda |
|---|---|---|
| 免费版无水印 | ||
| 无需注册账户 | ||
| 付费计划任务无限制 | ||
| 文件 1 小时后自动删除 | Stated but timing unclear | |
| 按书签拆分 PDF | ||
| 按文本/关键字拆分 PDF | ||
| 根据内容重命名 PDF | ||
| 贝茨编号 | ||
| PDF 页面交替 | ||
| AI PDF 摘要 | Pro+ | |
| AI PDF 对话 (问答) | Pro+ | |
| 自动编辑个人身份信息 (PII) | Pro+ | |
| REST API (38 个端点) | Pro+ | Paid — fewer endpoints |
| 团队工作区 | Teams plan | |
| 批量处理 | Pro+ | |
| 工具总数 | ||
| 输出格式 | ||
| 平台 | ||
| Accessibility Tools (checker + fix) | ||
| AI Contract Analysis | Pro+ | |
| Document Workspace (folders, tags, search) | ||
| Total tools | 101 | ~35 |
| Output formats | 20+ (PDF, Word, Excel, PPT, JPG, PNG, etc.) | ~10 formats |
| Platform | Any browser (no install) | Browser + desktop app (Mac/Win/Linux) |
WhiskFile 最适合
- 您需要批量处理文档且经常达到 Sejda 的每小时限制
- 您需要按书签或按文本拆分功能（Sejda 不具备这些功能）
- 您需要 AI 摘要或 AI PDF 对话功能
- 您的团队需要共享工作区和集中计费
Sejda 最适合
- 您更喜欢可以离线工作的桌面应用程序
- 预算是首要考虑因素，且您不需要 AI 功能
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 files → drag to reorder → click Merge → download. No account required, up to 50 MB free.
Upload files → reorder → click Merge. Limited to 50 MB and 200 pages on free tier; counts toward 5/hour limit.
Compress a large PDF
Upload PDF → choose compression level (low/medium/high) → download. Browser-based for most files.
Upload PDF → choose quality level → download. Server-side processing; 50 MB/200-page limit on free tier.
Convert PDF to Word
Upload PDF → auto-converts → download DOCX. Preserves formatting for text-based PDFs.
Upload PDF → converts server-side → download DOCX. Same 50 MB/200-page free limits apply.
OCR a scanned PDF
Upload scanned PDF → OCR runs automatically → download searchable PDF. Free for all users, 100+ languages.
Upload PDF → OCR processes (free: max 10 pages) → download. Paid plans allow up to 100 pages.
Sign a PDF
Upload PDF → draw/type/upload signature → place on page → download signed PDF.
Upload PDF → draw/type signature → place → download. Free within hourly task limit.
At a Glance
WhiskFile focuses on
- Browser-based document utilities
- PDF conversion and manipulation
- AI-powered document workflows
- Privacy-focused processing
Sejda focuses on
- PDF editing and manipulation
- Desktop and web PDF utilities
- Conversion and compression
- Form filling and signatures
Privacy & Security
| Privacy aspect | WhiskFile | Sejda |
|---|---|---|
| Browser processing | Yes — most tools (69 of 101) | No — server-side processing |
| File retention | Auto-deleted after 1 hour | Deleted after 2–5 hours (sources vary) |
| Encryption | TLS 1.3 in transit, AES-256 at rest | SSL/TLS in transit |
| GDPR | Compliant | Not publicly specified |
OCR (Optical Character Recognition)
| OCR feature | WhiskFile | Sejda |
|---|---|---|
| OCR available | true | |
| Free access | Yes — free for all users | Yes — limited to 10 pages per task |
| Languages | 100+ languages | Not publicly specified |
| Searchable PDF output | ||
| Batch OCR | Pro+ | Paid plans only |
Free OCR limited to 10 pages; paid plans allow up to 100 pages
AI-Powered Features
| AI feature | WhiskFile | Sejda |
|---|---|---|
| Chat with PDF | Pro+ | |
| Summarization | Pro+ | Minimal — basic chatbot |
| Question answering | Pro+ | |
| PII auto-redaction | Pro+ | |
| Translation | Pro+ |
Sejda focuses on traditional PDF editing; AI features are minimal
Cloud Integrations
| Integration | WhiskFile | Sejda |
|---|---|---|
| Google Drive | On roadmap | |
| Dropbox | On roadmap | |
| OneDrive | On roadmap | |
| URL import | ||
| API access | Pro+ (38 endpoints) | Paid — fewer endpoints |
Account Requirements
WhiskFile
No — first 3 tasks without account, up to 7/day with free account
Sejda
No signup required for free tier
Supported File Formats
WhiskFile (20 formats)
Sejda (10 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
WhiskFile 拥有更多的工具（83 种，而 Sejda 约为 35 种）、Sejda 所缺乏的 AI 功能，以及干扰更小的每日限额（7 次/天 vs 5 次/小时）。Sejda 拥有桌面应用程序且运营时间更长。对于大多数基于 Web 的工作流，WhiskFile 是更强的选择。
Sejda 每小时 5 个任务的限制每 60 分钟重置一次。如果您在一小时内处理 6 份文档（这在批量工作或多步骤工作流中很常见），您会突然遇到限制并被迫等待。WhiskFile 每天 7 次的限制不太可能中断专注的工作会话。
WhiskFile Pro 为每月 4.99 美元，而 Sejda 约为每月 7.50 美元，每月相差 2.51 美元。WhiskFile Pro 包含 Sejda 在任何价位下都无法提供的 AI 功能和批量处理功能。
不能。WhiskFile 是一款基于 Web 的工具。Sejda 拥有用于离线使用的桌面应用程序。如果离线访问至关重要，Sejda 的桌面应用程序或像 PDF24 这样的本地安装工具可能更适合您。
不会。WhiskFile 在免费计划中不会添加水印——这与 Sejda 相同。所有用户（无论是否登录）均可获得无水印的输出。
结论
Sejda 是一款拥有桌面端应用且积累了 10 多年信誉的稳健 PDF 工具。然而，其每小时的任务限制、缺失的 AI 功能以及缺乏团队计划，使得 WhiskFile 在批量工作流、AI 辅助任务和小团队协作方面成为更强的选择。如果您需要离线桌面访问，Sejda 仍然具有优势。
Sources
- Pricing page checked 2026-09-24
- Help center 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。
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