Best Smallpdf Alternative: WhiskFile
Smallpdf 是目前最知名的在线 PDF 工具之一，但它限制免费用户每天只能合并 2 个 PDF 文件，并且会在没有明确告知的情况下自动开启 14 天试用。WhiskFile 每天为您提供 7 个免费任务，没有意外扣费，无需信用卡，且提供更多工具。
最后测试时间：July 2026 · 基于实际测试。
免费方案对比
| 功能 | WhiskFile | Smallpdf |
|---|---|---|
| Daily task limit | 7 tasks across all tools | 2 tasks per tool per day |
| Max file size | 50 MB | Varies by tool (15–100 MB) |
| Watermarks | None | None |
| Credit card required | No | No (but trial auto-starts) |
| File deletion | Auto-deleted after 1 hour | Not clearly disclosed |
定价对比
| 方案 | WhiskFile | Smallpdf |
|---|---|---|
| Free tier | Free — 7 tasks/day, 50 MB | Free — 2 tasks/day per tool, 15 MB some tools |
| Pro | $4.99/month or $39.99/year | $4.99/month or $72/year |
| Teams | $29/month (10 seats) | $12/user/month (min 2) |
Pricing checked on: September 24, 2026. Smallpdf pricing page
功能对比
| 功能 | WhiskFile | Smallpdf |
|---|---|---|
| 免费版无水印 | ||
| 付费版任务无限制 | ||
| 无意外试用扣费 | Trial auto-starts without clear opt-in | |
| 文件 1 小时后自动删除 | Not clearly disclosed | |
| 按书签拆分 PDF | ||
| 按文本/关键字拆分 PDF | ||
| 贝茨编号 | ||
| 根据内容重命名 PDF | ||
| AI PDF 摘要 | Pro+ | Pro (basic) |
| AI PDF 对话 | Pro+ | Pro (basic) |
| 自动遮盖个人隐私信息 (PII) | Pro+ | |
| REST API | Pro+ (38 endpoints) | Limited (2 endpoints documented) |
| 批量处理 | Pro+ | Pro+ |
| 电子签名 / 填写表单 | ||
| OCR | Pro only | |
| 工具总数 | Pro (eSign) | |
| 输出格式 | ||
| 平台 | ||
| Accessibility Tools (checker + fix) | ||
| AI Contract Analysis | Pro+ | |
| Document Workspace (folders, tags, search) | ||
| Total tools | 101 | ~22 |
| Output formats | 20+ (PDF, Word, Excel, PPT, JPG, PNG, etc.) | ~12 formats |
| Platform | Any browser (no install) | Browser + desktop app |
为什么切换到 WhiskFile
- 每天 7 个免费任务，无单项工具限制
- 无自动试用，无意外扣费，无需信用卡
- 所有方案均免费提供 OCR 功能
- REST API 拥有 38 个端点（Pro 版）
- 具备更佳隐私架构的 AI 功能
Smallpdf 在以下情况下仍然胜出
- 您依赖工具内置的 Google Drive / Dropbox 集成功能
- 您需要使用团队已经熟悉的 Smallpdf 电子签名工作流
何时从 Smallpdf 切换到 WhiskFile
- 您在免费版下每天需要合并超过 2 个 PDF
- 您曾因 Smallpdf 的自动试用扣费而感到困扰
- 您需要免费使用 OCR 功能
- 您希望在不牺牲文档隐私的前提下使用 AI 功能
Common Workflows Compared
Merge multiple PDFs
Upload files → reorder → Merge → download. 7 free tasks/day, no per-tool cap.
Upload files → reorder → Merge → download. Free tier limited to 2 merges per day.
Compress a large PDF
Upload → choose compression level → download. Browser-based for most files.
Upload → Smallpdf auto-compresses → download. Server-side; free tier limits apply.
Convert PDF to Word
Upload PDF → instant conversion → download DOCX. Free, no account.
Upload PDF → Smallpdf converts server-side → download. Free with daily task limits.
Privacy & Security Comparison
| Privacy aspect | WhiskFile | Smallpdf |
|---|---|---|
| Browser processing | Yes — most tools (69 of 101) | No — server-side processing (AWS, EU region) |
| File retention | Auto-deleted after 1 hour | Deleted within 1 hour for most tools; eSign files retained 14 days |
| Encryption | TLS 1.3 in transit, AES-256 at rest | TLS in transit; ISO 27001 certified |
| GDPR | Compliant | Compliant (eIDAS compliant for eSign) |
OCR & AI Features
OCR
- WhiskFile
- Free for all users
- Smallpdf
- false
OCR locked behind paid plan; not available on free tier
AI Features
- WhiskFile
- Pro+ (Chat, Summarize, Redact)
- Smallpdf
- Pro (limited free: 4 docs, 30 prompts/day)
Free users get limited AI access: 4 documents, 30 prompts/day, 25K-35K word cap
Cloud Integrations
| Integration | WhiskFile | Smallpdf |
|---|---|---|
| Google Drive | On roadmap | |
| Dropbox | On roadmap | |
| OneDrive | On roadmap | |
| API access | Pro+ (38 endpoints) | Limited (2 documented endpoints) |
如何从 Smallpdf 切换
无需迁移 — WhiskFile 和 Smallpdf 一样是网页工具。访问 whiskfile.com，即可立即使用任何工具。在您的计费周期结束时取消 Smallpdf 订阅即可。
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
我们的评测
Smallpdf 拥有精美的界面和庞大的用户群，但其严格的免费层级（每天限合并 2 个文件）、自动开启试用扣费以及有限的 API 功能，使得 WhiskFile 成为那些需要更多免费额度、透明计费和开发者友好型 API 的用户的更好选择。如果您依赖 Smallpdf 的 Google Drive/Dropbox 集成功能，那么 Smallpdf 依然具有优势。
常见问题
- 为什么人们在寻找 Smallpdf 的替代品？
- Smallpdf 用户最常见的抱怨是：每天 2 个文件的免费限制、自动开启试用导致的意外扣费，以及 OCR 功能需要付费。WhiskFile 解决了这三个问题。
- WhiskFile 是否拥有与 Smallpdf 相同的工具？
- WhiskFile 拥有 90 款工具，而 Smallpdf 约为 22 款。WhiskFile 不仅涵盖了 Smallpdf 的所有功能，还提供了独家工具，如按书签拆分、贝茨编号、按文本重命名以及按文本拆分。
- WhiskFile 可以免费使用吗？
- 是的。WhiskFile 每天免费提供多达 7 个任务，无需注册账号，也无需信用卡。不会自动开启任何试用。
- WhiskFile 是否像 Smallpdf 一样具有 AI 功能？
- 是的。WhiskFile Pro 包含 AI PDF 摘要、AI PDF 对话和自动遮盖 PII 功能 — 与 Smallpdf 的 AI 功能相当，且具有更强的隐私架构（仅发送文本给 AI，而非原始文件）。
- 我可以从 Google Drive 或 Dropbox 导入文件吗？
- 直接集成 Drive/Dropbox 的功能已在开发计划中。目前，您可以先从这些服务下载文件，然后上传到 WhiskFile — 步骤相同，只是需要手动操作。
- Does Smallpdf auto-start a trial without warning?
- Multiple user reports indicate Smallpdf's 14-day Pro trial can start without explicit opt-in, leading to unexpected charges. WhiskFile never auto-starts a trial and never requires a credit card for free usage.
- Is Smallpdf's OCR free?
- No. Smallpdf OCR is locked behind the Pro plan. WhiskFile provides OCR for free to all users, with 100+ language support.
- What happens to uploaded files on Smallpdf?
- Smallpdf states most files are deleted within 1 hour, but eSign files may be retained for 14 days. Smallpdf processes files server-side on AWS (EU region). WhiskFile auto-deletes after 1 hour and processes most tools in the browser.
- Does WhiskFile have a REST API like Smallpdf?
- WhiskFile Pro includes a REST API with 38 documented endpoints. Smallpdf's API is extremely limited, with only 2 publicly documented endpoints.
- Which is cheaper — WhiskFile or Smallpdf?
- Monthly price is the same ($4.99/month). Annually, WhiskFile is $39.99/year vs Smallpdf's $72/year — 45% cheaper. WhiskFile Pro also includes features Smallpdf charges extra for.
Sources
- Pricing page checked 2026-09-24
- Trust center checked 2026-09-24
- Support checked 2026-09-24