Smallpdf is a mature, well-regarded toolkit. It's a Swiss company with ISO/IEC 27001 certification, GDPR compliance, and a deep catalog of 30+ PDF tools covering everything from OCR to e-signatures. For most everyday PDF work, it's a solid, trustworthy choice, and we won't pretend otherwise.
The difference is architectural. Smallpdf does its work in the cloud: your file is encrypted and uploaded to its servers, processed there, and then deleted (within about an hour for free users). nimbril does the same kind of work without the upload at all. Every one of our 12 tools runs entirely in your browser, so your file never leaves your device. If you want proof, turn on airplane mode and the tools still work. That's the whole pitch, and it matters most for sensitive documents.
| nimbril | Smallpdf | |
|---|---|---|
| Where files are processed | Entirely on your device, in the browser. Files are never uploaded. | Uploaded over TLS to Smallpdf's cloud servers (AWS, EU) and processed there. |
| File retention | Nothing to retain: files never reach a server. Never stored, never used for training. | Files are deleted after processing, typically within about an hour for free users. |
| Account required | No signup to try any tool. Account only needed for Pro features. | No signup for basic use; an account or Pro trial is needed for tools like OCR. |
| Tool catalog | 12 focused tools (compress, remove background, HEIC convert, redact, sign, EXIF strip, QR, video trim, and more). | 30+ tools, broader and deeper for full PDF workflows (OCR, merge/split, convert, edit). |
| Redaction | Redact flattens content into pixels / an image-only PDF, so removed text is truly gone. | Offers annotation and editing tools; verify any redaction is permanent before sharing. |
| Maturity & certifications | A newcomer. No formal certifications yet; privacy comes from never uploading. | Established, Swiss-based, ISO/IEC 27001 certified, GDPR/CCPA/nFADP compliant, AES-256 in transit. |
| Pricing | Generous free tier. Pro $9/mo or $69/yr for all tools; single app $4/mo. | Limited free tier (a couple tasks/day); Pro around $9/user/mo billed annually, plus Team/Business plans. |
If you need a wide, deep PDF workflow, Smallpdf is hard to beat. OCR on scanned documents, format conversion to and from Office files, page merging and splitting, e-signature requests with audit trails, plus desktop and mobile apps, all live under one roof. Its ISO/IEC 27001 certification and GDPR compliance also give organizations a clear, auditable trust story. nimbril deliberately covers fewer tools, so if your job depends on something we don't make yet, Smallpdf is the practical pick.
nimbril's edge is simple: your file never leaves your device. For regulated and sensitive work, that turns a privacy promise into a verifiable fact, because there's no upload step to trust in the first place. Paralegals, solo attorneys, healthcare and HR admins, and anyone under an NDA can process a document without it ever touching a third-party server. Our redaction also flattens content into pixels, so removed text can't be recovered by deleting a black box, which is a real risk with editor-style overlays.
On-device processing means the heavy lifting happens on your machine, so very large files lean on your own hardware rather than a data center, and our catalog is younger and narrower than Smallpdf's. We're a newcomer without formal certifications. What we offer instead is a structural guarantee: no signup to try, and nothing uploaded, ever. If that's the property you care about most, nimbril is built around it.
No. Smallpdf encrypts and uploads your file to its cloud servers for processing, then deletes it afterward. nimbril processes everything in your browser, so the file never leaves your device. You can confirm this by going offline (airplane mode) and watching the tools keep working.
Yes, by mainstream standards. Smallpdf is a Swiss company that is ISO/IEC 27001 certified, GDPR/CCPA/nFADP compliant, uses TLS in transit, and auto-deletes files after processing. The distinction with nimbril is architectural, not a knock on Smallpdf: with on-device processing there's simply no upload to secure.
No. Smallpdf offers 30+ tools with deep PDF features like OCR, conversion, and e-signature workflows. nimbril offers 12 focused on-device tools. If you need a feature we don't have, Smallpdf may serve you better.
For files under HIPAA, an NDA, or professional confidentiality, the safest file is one that's never transmitted. Because nimbril never uploads, there's no server copy to breach, retain, or misuse. nimbril's redaction also flattens content into pixels, so removed information is genuinely unrecoverable rather than hidden under a deletable box.