PDF Inspector vs Smallpdf
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | PDF Inspector | Smallpdf |
|---|---|---|
| Pricing | Freemium; Pro and Business tiers | Freemium; Pro from ~$12/mo (billed annually) |
| Core function | PDF-to-Markdown converter with selective OCR | 30+ tools: convert, compress, edit, sign, AI chat |
| Processing | Local in-browser (device files never uploaded) | Cloud-based, requires upload |
| AI features | No AI chat; uses OCR for scanned pages | AI chat, summarizer, translate, question generator |
| Best for | Developers and data scientists needing clean Markdown | Quick everyday PDF tasks and e-signatures |
Pick Smallpdf if you need a Swiss-army knife for everyday PDF tasks—converting, compressing, editing, and signing—especially if you work across web and mobile. Choose PDF Inspector if your goal is transforming complex PDFs into clean Markdown for LLM pipelines or knowledge bases, and you value privacy through local processing. Don't buy either for advanced form creation or batch-heavy workflows.
Turn messy PDFs into clean, structured Markdown with page-level analysis and selective OCR.
Visit Website
Feature-by-feature
Smallpdf is a broad toolkit with over 30 tools—compress, convert to Word/Excel/PPT, merge, split, edit, annotate, redact, watermark, and e-sign via Sign.com. It also includes an AI PDF Assistant suite (chat, summarizer, translate, question generator) that handles files up to 50 MB. PDF Inspector is laser-focused on converting PDFs to Markdown. It classifies each page as text-based, scanned, image-based, or mixed, then runs OCR only on image-heavy pages—avoiding the duplicate-text problem. It recovers tables (bordered or borderless), infers headings (H1–H4) from font sizes, detects lists and code blocks, and preserves bold, italic, links, and page boundaries. Crucially, PDF Inspector runs entirely in-browser via WebAssembly: device files never leave your machine, whereas Smallpdf requires cloud uploads (though it uses TLS encryption). Smallpdf offers integrations with Google Workspace, Dropbox, and mobile apps; PDF Inspector lists no integrations. For OCR fidelity, PDF Inspector handles complex layouts and CID fonts (Type0/Identity-H) via ToUnicode maps, while Smallpdf's OCR is more basic. If you need to edit a PDF's text or request a signature, Smallpdf wins; if you need structured output for code or data, PDF Inspector is purpose-built.
Pricing compared
Both tools are freemium. Smallpdf: free tier with limited tool uses; Pro plan starts around $12/month billed annually (or ~$9/month with yearly billing). It includes unlimited file access, larger file sizes, and full AI features. PDF Inspector: free tier for basic conversions with limits on file size/OCR; Pro and Business tiers unlock higher limits, selective OCR, and shared access for teams. For professionals needing consistent, high-volume conversion, PDF Inspector's paid tiers likely cost less than Smallpdf's Pro if you only need conversion. But Smallpdf's Pro includes e-signatures and 30+ tools, justifying the price if you need those. Watch for usage caps on both free tiers—Smallpdf limits tool uses per day; PDF Inspector limits file size or number of conversions. If you only do occasional conversions, free tiers suffice; for heavy usage, budget accordingly.
Who should pick which
- Freelancer juggling client forms and e-signaturesPick: Smallpdf
Smallpdf bundles compress, edit, and sign in one tool—you avoid desktop software and can handle approvals via Sign.com.
- Data scientist building an LLM knowledge basePick: PDF Inspector
PDF Inspector outputs clean Markdown with preserved tables and code—ideal for chunking and embedding, and local processing keeps sensitive data private.
- Student annotating lecture slidesPick: Smallpdf
Smallpdf's annotate and AI summarize tools are quick for study—convert slides to PDF, add highlights, and chat with content.
- Developer handling scanned contracts with mixed pagesPick: PDF Inspector
Selective OCR only scans image pages, saving time and avoiding duplicate text—perfect for converting mixed text/image contracts to Markdown.
- Sales team needing document trackingPick: Smallpdf
Smallpdf's e-signature via Sign.com integrates with Google Workspace and Dropbox, making it easy to send, track, and store signed agreements.
Frequently Asked Questions
PDF Inspector vs Smallpdf: which should you choose?
Pick Smallpdf if you need a Swiss-army knife for everyday PDF tasks—converting, compressing, editing, and signing—especially if you work across web and mobile. Choose PDF Inspector if your goal is transforming complex PDFs into clean Markdown for LLM pipelines or knowledge bases, and you value privacy through local processing. Don't buy either for advanced form creation or batch-heavy workflows.
Can I use Smallpdf offline?
No, Smallpdf is web-based—you need internet. PDF Inspector also runs in-browser but processes locally, so after page load, you can work without an active connection for device files.
Does PDF Inspector support OCR for all scanned PDFs?
Yes, but its selective OCR only applies to image-based pages. For mixed documents, it routes only the pages that need OCR, preserving accuracy and speed.
Which tool handles tables better?
PDF Inspector is built for table recovery—it reconstructs tables from drawing operations and text alignment, handling bordered and borderless layouts. Smallpdf converts to Excel but may not preserve complex table structure as cleanly.
Is my data secure with these tools?
Smallpdf uses 256-bit TLS and is ISO/IEC 27001 certified, GDPR/CCPA compliant, but files upload to the cloud. PDF Inspector never uploads device files—everything stays local, which is better for sensitive documents.
Can I convert PDF to Markdown with Smallpdf?
Smallpdf doesn't list Markdown as an output format. PDF Inspector's primary output is Markdown, making it the clear choice for that need.
How do free tiers compare?
Smallpdf's free tier offers a limited number of tool uses per day (e.g., compress, convert). PDF Inspector's free tier allows basic conversions but caps file size or OCR usage—exact limits vary by plan.
Which tool supports e-signatures?
Smallpdf integrates with Sign.com for e-signatures. PDF Inspector has no signing features—it's solely for analysis and conversion.
Can I use these tools on mobile?
Smallpdf has iOS and Android apps. PDF Inspector is web-based and not documented with mobile apps—likely best on desktop for complex conversions.
More PDF Inspector or Smallpdf comparisons
For most users needing a free, full-featured PDF toolkit with advanced AI (Smart Split, Forms, Summarizer), iLovePDF offers better value at $12/mo Pro. Smallpdf edges ahead with its AI chat assistant
Pick iLovePDF if you need a versatile, user-friendly PDF toolkit for everyday tasks like merging, converting, and signing—its free tier and low-cost Premium make it a no-brainer. Choose PDF Inspector
If you need a full-featured PDF editor with AI assistance and eSignature for business workflows, Foxit is the clear choice. If your focus is converting complex PDFs to clean Markdown for LLM pipelines
Explore each tool further
Browse these categories
One email a week — new tools, honest comparisons, no spam.
Last reviewed: August 6, 2026