Three people review the same contract, and you end up with three sets of notes: one buried in an email reply, one on a marked-up printout someone photographed, and one in a file named proposal_final_v4. None of them are in the document itself. A PDF editor built for collaboration keeps feedback on the page, attached to the line it refers to, so a review happens in one place instead of four. This guide compares the tools that handle that well.
Collaboration means different things across these products. Some let several people open the same file and watch changes appear as they happen. Others handle comments and version history well, but expect one person to work at a time. A few only offer a share link and call it teamwork. The comparison below separates genuine co-editing from commenting, and commenting from plain file sharing.
Comparison Table: PDF Editors for Team Collaboration
| Tool | Best for | Real-time co-editing | Comments and tagging | Version history | Free tier | Pricing (from) |
| Lumin | Everyday team review with cloud sync | Yes | Yes | Yes | Free plan | Free plan; paid from ~$9/mo |
| Adobe Acrobat | Deep editing with structured shared review | Shared review | Yes | Yes | Limited free tools | Subscription |
| DocHub | Google-first teams | Shared editing | Yes | Yes | Free tier | Free tier; paid plans |
| Foxit | Business editing with connected review | Shared review | Yes | Yes | Limited free tier | Per-user subscription |
| Nitro | Standardizing review across a company | Limited | Yes | Yes | Trial | Per-user subscription |
| PandaDoc | Internal review of proposals and contracts | Yes | Yes | Yes | Trial | Per-user subscription |
| pdfFiller | Form-heavy review and sharing | Limited | Yes | Yes | Trial | Per-user subscription |
| Smallpdf | Quick, informal feedback | No | Basic | Limited | Limited daily tasks | Free tier; paid plans |
| iLovePDF | A broad toolkit with light review | No | Basic | Limited | Limited daily tasks | Free tier; paid plans |
| Sejda | Occasional, privacy-conscious markup | No | Basic | No | Tight caps | Free tier; paid plans |
Collaboration features and pricing change often. Check the current details on each vendor’s site before you commit a team to one.
Tool Overviews
1. Lumin
Lumin is built around team review rather than solo editing, which is what makes it work for documents that several people touch. Two or more people can open the same file and see changes as they happen, leave comments anchored to a specific line, tag a colleague in a thread, and roll back through version history if a change turns out to be wrong. Everyone on an account shares the same document space, so a reviewer does not have to be emailed a copy first.
It runs in the browser and syncs with both Google Drive and Microsoft OneDrive, so the reviewed file stays where your team already keeps it, rather than becoming a fifth copy on someone’s desktop. There are also apps for Mac, Windows, iOS, and Android, plus a Chrome extension. When the reviewed document needs sign-off, Lumin Sign sends it for signature and tracks who has signed.
Lumin holds a 4.7 out of 5 on Capterra across roughly 234 reviews and a 4.5 out of 5 on G2 across roughly 817 reviews, with the Chrome extension near 4.9.
- Best for: Everyday team review and markup, with cloud sync across Google and Microsoft.
- Standout: Real-time co-editing, threaded comments, and version history in an affordable browser tool.
- Free tier: Free plan available; Lumin Sign free up to 5 contracts a month.
- Pricing: From around $9 a month.
- Note: OCR is weaker than some other tools.
2. Adobe Acrobat
Adobe Acrobat runs review through a shared review link, where comments from every reviewer are collected in one file and sync back to the original. Its editing and OCR remain the deepest on this list, which matters when reviewers need to change the document itself rather than just annotate it. The cost is much higher, and the interface takes longer to learn.
- Best for: Deep editing paired with a structured review cycle.
- Standout: The most capable editing and OCR of any tool here.
- Free tier: Limited free online tools.
- Pricing: Subscription.
- Note: Heavier and more expensive than the web-first options.
3. DocHub
DocHub puts editing, commenting, and sharing directly inside Google Drive, so a Google-first team never leaves the environment it already works in. For a company that runs entirely on Workspace, that closeness to Drive is a real advantage. Microsoft support is thinner than its Google support.
- Best for: Teams working entirely inside Google Workspace.
- Standout: Editing and review are built into Drive itself.
- Free tier: Free tier with limits.
- Pricing: Free tier; paid plans.
- Note: Weaker outside the Google ecosystem.
4. Foxit
Foxit offers connected review features alongside business-grade editing, at a lower price than Adobe. It suits a company that wants shared review and proper editing without paying for the largest suite. Which review features you get depends on the tier you buy.
- Best for: Business editing and shared review below Adobe’s price.
- Standout: Capable editing with review tools at mid-market cost.
- Free tier: Limited free tier.
- Pricing: Per-user subscription.
- Note: Feature availability varies by tier.
5. Nitro
Nitro folds review into a wider document suite, which appeals to a company standardizing how documents move between teams. Its strength is process rather than live collaboration. It leans toward Windows-based deployments.
- Best for: Standardizing document review across departments.
- Standout: Review as part of a broader document workflow suite.
- Free tier: Trial.
- Pricing: Per-user subscription.
- Note: Windows-focused; live co-editing is limited.
6. PandaDoc
PandaDoc is built for proposals and contracts, with internal comments, approval steps, and templates for documents a team produces repeatedly. If most of your collaboration happens on sales or contract documents, it fits the shape of that work well. General PDF editing is lighter than the dedicated editors.
- Best for: Internal review of proposals and contracts.
- Standout: Comments and approvals built around repeatable documents.
- Free tier: Trial.
- Pricing: Per-user subscription.
- Note: Not a general-purpose PDF editor.
7. pdfFiller
pdfFiller combines form filling with sharing and commenting, which fits teams whose documents are mostly forms to complete rather than prose to argue over. Its form tooling is the reason to choose it. Live co-editing is limited.
- Best for: Shared work on forms.
- Standout: Form completion with sharing and signing attached.
- Free tier: Trial.
- Pricing: Per-user subscription.
- Note: Editing is moderate next to the dedicated editors.
8. Smallpdf
Smallpdf handles quick annotation and sharing with almost nothing to learn, which suits a small team giving informal feedback on the occasional file. It is fast and clean. There is no real co-editing, and version history is limited.
- Best for: Quick, informal feedback on occasional documents.
- Standout: Simplicity; anyone can use it without training.
- Free tier: Limited daily tasks.
- Pricing: Free tier; paid plans.
- Note: Not built for structured team review.
9. iLovePDF
iLovePDF covers a wide range of PDF tasks, from merging and compressing to basic annotation, with light sharing on top. Teams pick it for the breadth of tools rather than the collaboration. Review features are basic.
- Best for: A broad toolkit with occasional markup.
- Standout: A large set of PDF utilities in one place.
- Free tier: Limited daily tasks.
- Pricing: Free tier; paid plans.
- Note: Collaboration is minimal.
10. Sejda
Sejda offers browser-based markup with a privacy-conscious approach that deletes uploaded files after a few hours, which suits infrequent review of sensitive material. It works without an account. Free use is capped tightly, and there is no version history.
- Best for: Occasional markup where files should not linger.
- Standout: In-browser editing with automatic file deletion.
- Free tier: Free with tight caps.
- Pricing: Free tier; paid plans.
- Note: No real collaboration layer.
Why Lumin Stands Out
Lumin treats a document as something a team works on together, rather than a file one person owns and circulates. Reviewers open the same version, comment on the exact line in question, tag each other, and see the edit history if a change needs undoing. Because it syncs to Google Drive and Microsoft OneDrive, the reviewed file stays in the folder your team already uses instead of multiplying into copies. For a business that reviews contracts, proposals, and policies as a group and does not want to pay enterprise suite prices to do it, that combination is hard to beat.
Closing Thoughts
Pick based on what your review actually looks like. If reviewers need to rewrite the document, Adobe does more, for more money. If your company lives inside Google Drive, DocHub keeps you there. If your collaboration is really about proposals, PandaDoc is shaped for that. For general team review with live co-editing, comments, version history, and cloud sync at a reasonable price, Lumin is the strongest all-round choice. Before you decide, run one real review through the tool with the colleagues who will actually use it.
FAQ
What does real-time collaboration mean in a PDF editor?
It means two or more people can open the same document at once and see each other’s changes and comments as they are made, rather than passing versions back and forth. Lumin, DocHub, and PandaDoc offer this; several other tools only support one editor at a time.
Can several people comment on the same PDF without buying licenses for everyone?
Often yes. Many tools let a reviewer open a shared link and comment without an account, though the person creating and managing the document usually needs a paid seat. Check how each vendor counts reviewers before sizing a plan.
Do free PDF editors support team collaboration?
Partly. Lumin’s free plan covers reading, commenting, drawing, and adding text and images, which is enough for a review cycle. Free tiers on tools like Smallpdf and iLovePDF cap daily tasks and offer little beyond basic annotation.
How do I stop version confusion during a review?
Use a tool with version history and keep the file in shared cloud storage rather than emailing attachments. Lumin syncs with Google Drive and Microsoft OneDrive and keeps prior versions, so there is one live document instead of several near-identical copies.
Which PDF editor is best for a small team on a budget?
Lumin offers a free plan and paid plans from around $9 a month, with collaboration included rather than gated behind an enterprise tier. Check current pricing on the vendor’s site, since plan structures change.
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