SigPDF vs Sejda
Sejda is a popular online PDF toolkit with signing, editing, and conversion features. If privacy matters to you — and you primarily need to sign PDFs — SigPDF offers a more private and affordable alternative where your files never leave your browser.
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SigPDF vs Sejda: Side-by-Side Comparison
Sejda is a well-known online PDF platform that offers a broad range of tools — sign, edit, merge, split, compress, convert, and more. It is available both as a web application and a desktop app. Sejda's online tools upload your PDF to their servers for processing, with files automatically deleted after 2 hours.
SigPDF focuses exclusively on PDF signing and processes everything in your browser. Your files never touch any external server. Here is how the two compare:
| Feature | SigPDF | Sejda |
|---|---|---|
| Price | From €2.08/month (annual) | $7.50/month (Web Week Pass) or $63/year |
| Privacy | Files never leave your browser | Online: files uploaded to servers (deleted after 2h) |
| Free tier | Free to try (download requires subscription) | 3 tasks/day, 50 MB limit, 200 pages |
| PDF tools | Signing and text fields | Sign, edit, merge, split, compress, convert |
| Installation | None — browser only | Optional desktop app available |
| Account required | No | No for free tier; yes for paid |
| Watermarks | Never | None on paid plans |
The Privacy Difference
This is the most significant difference between SigPDF and Sejda. When you use Sejda's online PDF tools, your file is uploaded to Sejda's servers for processing. Sejda states that uploaded files are automatically deleted after 2 hours, and they have a clear privacy policy. However, during those 2 hours your document exists on a third-party server.
SigPDF takes a fundamentally different approach. Your PDF is processed entirely inside your browser using client-side JavaScript. The file never leaves your device — not even temporarily. For sensitive documents like contracts, financial records, legal agreements, medical forms, and HR paperwork, this zero-upload architecture provides a level of privacy that server-based tools cannot match.
Pricing: More Affordable for Signing
Sejda's paid plans start at $7.50/month for a Web Week Pass, or $63/year for the annual web plan. Their Desktop + Web plan costs $69/year. SigPDF costs €2.08/month on the annual plan (€24.99/year). If signing PDFs is your primary need, SigPDF is more affordable and provides better privacy.
Simplicity and Focus
Sejda offers over 30 PDF tools, which is impressive but can be overwhelming if you just need to sign a document. SigPDF is laser-focused on one task: signing PDFs. The interface is clean and minimal — open your PDF, create your signature, place it, and download. No menus to navigate, no features to learn, and no distractions.
When Sejda Is the Better Choice
Sejda is the better choice when you need a versatile PDF toolkit — merging multiple PDFs, splitting documents, compressing files, converting between formats, editing text within a PDF, or performing batch operations. If your needs extend beyond signing, Sejda's comprehensive tool set covers a wide range of PDF tasks. For PDF signing specifically — especially when privacy matters — SigPDF is the better fit.