An honest look at PDFluna
No fabricated testimonials, no paid review badges. Below: how PDFluna stacks up against the major alternatives, what we do well, what we don’t, and how to leave real feedback when you’re ready to.
Why this page isn’t full of five-star quotes
Most online PDF tools have a “reviews” page that’s a wall of anonymised testimonials, glowing star ratings, and tiny logos of companies that may or may not actually use the tool. Ours doesn’t, on purpose. PDFluna is a genuinely young project; we don’t have enough verified third-party reviews yet to publish a wall of them honestly, and writing fake ones would contradict the entire reason we built this in the first place.
Instead, this page does three things that are more useful than fabricated social proof: it shows you exactly how we compare to the main alternatives, it’s transparent about what we do well and what we don’t, and it gives you a direct path to leave feedback when you have something to say. When verified reviews on third-party platforms (TrustPilot, G2, Product Hunt) start landing, we’ll link to them here with the source link — not retype them as our own copy.
How PDFluna compares
Across ten dimensions that matter for picking a PDF tool. Last verified .
| Dimension | PDFluna | iLovePDF | Smallpdf | Adobe Online |
|---|---|---|---|---|
| Files leave your device The single biggest privacy axis. Server-side tools all upload; we don’t. | ✕ never | ✓ uploaded to their servers | ✓ uploaded to their servers | ✓ uploaded to their servers |
| Sign-up required | ✕ never | ~ free tier limited (sign-up unlocks more) | ~ daily-task cap without sign-up | ✓ Adobe ID required for most tools |
| Free tier file count | unlimited | ~3 tasks/day on free | ~2 tasks/day on free | 7-day trial, then paid |
| Hard file-size cap Server-side tools have higher absolute caps but throttle the free tier; ours treats every visitor the same. | 100 MB (most tools) | 15 MB on free tier | 5 GB premium / 100 MB free | 100 MB free tier |
| Watermark on output | ✕ never | ✕ | ✕ | ✕ |
| Works on phones | ✓ browser-only, no app needed | ✓ web + native iOS/Android apps | ✓ web + native iOS/Android apps | ✓ web + native iOS/Android apps |
| Works fully offline | ~ partial (browser cache; Service Worker on roadmap) | ✕ requires server | ✕ requires server | ✕ requires server |
| Open-source libraries | ✓ PDF.js, pdf-lib, fflate (auditable) | closed-source server stack | closed-source server stack | closed-source proprietary |
| Format coverage Genuine miss for us — server-side competitors handle PowerPoint, legacy .doc, and PDF→Word/Excel that we can’t do client-side. | PDF, JPG, PNG, DOCX, RTF, ODT, XLSX, XLS, ODS, CSV | broader (server LibreOffice) | broader (server LibreOffice) | broadest (Acrobat backend) |
| Price | $0 forever | paid tier $7+/mo for full | paid tier $9+/mo for full | paid $20/mo (Acrobat Pro Online) |
Competitors’ values reflect their public pricing and policies on the date above. If something is out of date, please let us know and we’ll fix it.
What we do well, what we don’t
Anti-marketing copy is more useful than marketing copy here. Pick the tool that fits your job; if PDFluna isn’t it, we’d rather you know up front.
Where PDFluna wins
- Privacy by architecture. Files literally never leave your device. You can verify it in browser DevTools yourself — no privacy policy to take on faith.
- Free without artificial caps. No daily task limits, no sign-up wall, no watermarks. Same experience for everyone.
- No account, no profile. We don’t want your email to give you a password reset because we don’t want a password to reset.
- Honest defaults. Each tool tells you what it does well and what it doesn’t in plain language — no “magic AI results in seconds” copy.
- Open-source backbone. Built on PDF.js (Mozilla), pdf-lib, fflate, and other publicly auditable libraries. The processing is verifiable in a way closed-source competitors can’t match.
Where we’re weaker
- Format coverage. We can’t do PDF → Word, PDF → Excel, PowerPoint → PDF, or HTML → PDF client-side. Server-side competitors using LibreOffice handle these; for now if that’s your need, use them.
- Speed on huge files. A 500-page scan compresses faster on a 32-core server than in your phone’s browser tab. For everyday documents the difference is invisible; for industrial workflows, you want a server-side tool.
- No native mobile app. Browser-only on phones. Works fine on modern iOS/Android Safari and Chrome, but you can’t open a PDF from another app and route it through ours via a system share sheet.
- No team / collaboration features. No shared workspaces, no version history, no comments. We’re a tool for individual tasks, not a document-management platform.
- Image-based output for some tools. The conversion family (Word/Excel-to-PDF, Unlock-PDF) rebuilds the document as image-with-invisible-text-layer rather than preserving original vector text. Searchable but not byte-identical to a server-side render.
Who PDFluna is for — and who it isn’t
Probably a good fit
- You handle confidential documents (contracts, medical records, IDs, salary letters) and don’t want them touching a third-party server, even briefly.
- You’re an occasional PDF user — once or twice a week — and don’t want to maintain a paid subscription to Adobe or similar.
- You’re a developer or technically-curious user who appreciates being able to verify privacy claims in DevTools.
- You work in a regulated environment (healthcare, legal, finance, government) where uploading documents off-device is a compliance issue.
- You hit free-tier limits on Smallpdf or iLovePDF and don’t want to sign up.
Probably not the right tool
- You need PDF → Word or PDF → Excel conversion. We don’t ship those because we can’t do them well client-side.
- You process hundreds of large files daily and need automation. We’re a person-driven tool, not an API or batch processor.
- You need real-time collaboration on PDFs — comments, shared editing, version control. Try Adobe or Notion.
- You need cryptographic digital signatures (PAdES, eIDAS qualified). Our Sign PDF stamps a visual signature; for legally-binding signatures use DocuSign or Adobe Sign.
- You need a native iOS / Android app that integrates with the system share sheet. We’re web-only.
Frequently asked questions
Why don’t you show user testimonials with star ratings?
Because we don’t have enough real ones yet to publish honestly, and posting fabricated quotes is exactly the kind of dishonest brand behaviour that pushed us to build a privacy-first alternative in the first place. When we’ve received enough genuine third-party reviews on platforms like TrustPilot or G2, we’ll show those (with the source link, so you can verify they’re real). Until then, this page stays honest about being early.
Are the comparisons with iLovePDF, Smallpdf and Adobe accurate?
They reflect each competitor’s public pricing and policies as of the date this page was last updated (visible in the “Last updated” line below the table). Competitors change their tiers periodically; if you spot something out of date, email [email protected] and we’ll fix it. We don’t link to competitors directly because we’re not in the business of driving traffic away, but their pricing pages are one search away if you want to verify.
How can I leave honest feedback?
Email [email protected] with whatever you want to share — what worked, what didn’t, what’s missing. We read everything; bugs and feature requests typically ship within a few weeks if they’re feasible. When third-party review platforms (TrustPilot, G2, Product Hunt) profiles go live, the “Leave a review” section below will link to them.
Do you ever pay for reviews or run referral programs?
No. No paid reviews, no influencer marketing, no “5 stars for a free month” offers. The site is supported by display advertising on the tool pages — that’s the entire revenue model. If you’re writing about PDFluna in an editorial capacity (blog, newsletter, video), see the press section of our contact page.
Leave a review
Used a PDFluna tool and have something to share — good, bad, or just a “hey, here’s what worked”? We’d love to hear it. Email [email protected] directly, or reply to whichever tool page hosted the conversation if you came in via search.
Public review platforms (TrustPilot, G2, Product Hunt) profiles will land here as they go live.