PDF tools / Compare
Sejda PDF vs UPDF
Both do 2 of the same PDF tools tasks. Below is what each says about its own limits and pricing, and how each ranks on signals we can measure or quote.
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
A
Sejda PDF
Online PDF tools and a desktop app by Sejda BV (Amsterdam, Netherlands).
Signals score: 3.8 / 5 · not a hands-on test
Visit www.sejda.comB
UPDF
Create, edit, annotate, convert, translate, and sign PDFs with UPDF. Use AI to understand documents faster and work seamlessly across Windows, Mac, iOS, Android, and the web.
Signals score: 3.9 / 5 · not a hands-on test
Visit updf.comPricing, limits and privacy
- Free tier
- A: Free for documents up to 50 pages or 50 MB, and 3 tasks an hour. Some tools are tighter: one file per task, 20 pages per conversion, 10 pages per OCR task.
- B: Free version adds a trial watermark when saving. Free limits listed: 1 GB cloud storage with 10 MB per file, 2 file conversions per day, 5 OCR uses, batch processing of 2 files, AI assistant with 5 PDFs and 100 questions. The page contradicts itself on some limits.
- Paid plan
- A: A 7-day pass for $5 (one-time) and a yearly plan for $63 that includes Sejda Desktop. Paid removes the page and hourly limits and allows files up to 500 MB. We could not verify the monthly price.
- B: UPDF Pro is a yearly auto-renewing plan or a one-time lifetime purchase, covering 4 devices. AI Assistant is yearly, quarterly or monthly. 30-day money-back guarantee. Prices for these plans are Not stated in the page text I could read.
- Signup
- A: No signup required.
- B: Not stated. A pop-up says to sign in to get free access to some features, but it is unclear whether an account is needed for every use.
- Watermark
- A: Not stated.
- B: Yes. The free version adds a trial watermark when saving edited, annotated, protected or organized documents.
- Where files go
- A: Web tools upload files to Sejda's servers and delete them automatically after 2 hours, with encryption in transit and at rest. Sejda Desktop processes files on your computer.
- B: UPDF Cloud and AI features upload documents to UPDF Cloud, stored in data centers in the user's region. AI-processed content is said not to be used to train general-purpose AI models. Personal data is kept while the account is active. No retention period is given for uploaded documents. The policy does not say whether desktop editing is local only.
From each tool's own pages, checked 2026-10-31 (Sejda PDF) and 2026-11-01 (UPDF). Prices and limits change; check the tool before you rely on them. Sources are listed on each tool's page.
Compare on a task
Neither tool has been hands-on tested on these tasks yet, and we do not guess. Open a task to see both ranked with every other tool.
- Only Sejda PDF: Merge PDF, Split PDF, Compress PDF, Sign PDF, Word to PDF, PDF to Word, PDF to JPG, Protect PDF
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