PDFRun vs Sejda
Sejda is a focused PDF editor with capable form-filling and signing tools, but its free tier is the most restrictive in this category. PDFRun is the unlimited-tasks, no-account, browser-private alternative — here is an honest side-by-side.
Last verified: May 2026. Facts about Sejda come from their own pricing and docs pages — links below.
No 3-tasks-per-hour cap
Sejda’s free tier caps users at 3 tasks per hour and 200 pages or 50 MB per document. PDFRun’s free tier has no hourly task cap and no page count limit.
No watermark, no account
Sejda doesn’t watermark, but it caps and gates aggressively. PDFRun has no caps on task count or page count on the free tier, and never requires an account.
In-browser privacy mode
On 8 tools, PDFRun processes your file entirely in your browser — your file never leaves your device. Sejda processes server-side only (their desktop app is the offline alternative).
Pricing fits everyday use
Sejda’s paid tier has both a weekly and annual option ($7.50/week or $39/year). PDFRun Pro is a straightforward $9/month with no weekly micro-subscription model.
PDFRun vs Sejda — by feature
Sources for Sejda facts: Sejda pricing ; Sejda tools overview ; Sejda privacy policy .
Why we built PDFRun differently
Sejda has a particular place in the PDF-tool landscape: it punches well above its size on editing capability. The form-filling, text editing, and signing tools are unusually capable — better than what you’d expect from a product the size of Sejda, often closer to Adobe Acrobat’s feature set than to other browser-based competitors. If your day-to-day work involves editing PDFs heavily (filling forms, modifying existing documents, signing flows), Sejda is genuinely strong at the job.
The trade-off is the free tier. Sejda doesn’t use watermarks or display ads; instead, it caps free use aggressively: 3 tasks per hour, 200 pages per document, 50 MB per file. After the third task in an hour, you wait or pay. PDFRun’s free tier doesn’t cap task count or page count at all — only the per-file size (25 MB on free, 500 MB on Pro). For routine workflows where you’re processing more than 3 files per hour (consolidating receipts, splitting documents into pages for upload, batch-watermarking design proofs), Sejda’s caps interrupt the flow in a way PDFRun’s don’t.
On privacy, Sejda offers a desktop app as their answer to "files should not transit a server" — install, run locally, process offline. PDFRun’s answer is different: browser-mode processing on 8 tools, which works entirely in your existing browser tab without installing anything and is verifiable via the Network tab. Both approaches solve the same problem from different angles. If you’re comfortable installing desktop software, Sejda’s desktop app is excellent. If you prefer working entirely in a browser without installing anything, PDFRun’s browser-mode is the cleaner fit.
Pricing is interesting on Sejda: $7.50/week is the headline rate (designed to capture occasional users who need Pro for a single project), or $39/year for committed users. PDFRun Pro is a single $9/month subscription. If your need is genuinely one project this week and never again, Sejda’s $7.50 weekly is cheaper than PDFRun’s $9 month minimum. For ongoing use, PDFRun is broadly comparable on price and has the advantages above on the free tier.
When Sejda may be the right pick
- You need heavy PDF editing capability — form-filling, multi-element text edits, signed-document modification — at the level Sejda’s editor offers.
- You want a desktop app for offline PDF work without ever uploading to any cloud service.
- You only need Pro features for one isolated week (Sejda’s $7.50/week is cheaper than any monthly minimum).
- You’re processing documents in Italian, Dutch, or Portuguese where Sejda’s OCR coverage is broader than ours.
Common questions
What is Sejda’s free tier limit exactly?
As of May 2026, Sejda’s free web tool caps at 3 tasks per hour, 200 pages per document, and 50 MB per file. After the third task in a one-hour window you wait or pay. PDFRun’s free tier has no hourly task cap and no page count limit.
Why does Sejda cap free use so aggressively?
Hourly task caps are the conversion mechanism of Sejda’s freemium model — they work commercially, and they let Sejda offer no watermarks and no ads (which other free tiers use as their funding mechanism). It’s a coherent business model. PDFRun’s free tier is differently structured: smaller per-file size cap (25 MB vs 50 MB), but no cap on how many files you process per hour.
Is Sejda’s desktop app worth installing?
If you frequently work with sensitive PDFs and want files to never transit any server, yes — the Sejda desktop app is a good answer. PDFRun’s browser-mode processing (on 8 supported tools) is a different answer to the same problem: it runs entirely in your existing browser tab without an install, and is verifiable via the Network tab. Pick desktop app if you’re comfortable installing software; pick browser-mode if you prefer staying in the browser.
How does PDFRun compare to Sejda on editing capability?
Sejda’s editing tools are stronger than ours on form-filling and complex existing-document modifications. PDFRun’s editor handles text edits, image replacement, and signatures cleanly; for the heavy editing use cases (form structure modification, multi-element page redesign) Sejda is currently better at the job.
Can I migrate my Sejda Pro work to PDFRun?
There’s nothing structural to migrate — neither product stores files long-term. Just stop using Sejda and start using PDFRun. If you had saved Sejda Web account settings (signatures, frequent-recipient lists), recreate them in PDFRun Pro (workspaces are a Pro feature).
Does PDFRun have a desktop app or offline mode?
No desktop app, but the in-browser privacy mode on 8 tools (merge, split, rotate, organize, watermark, page-numbers, remove-pages, extract) functions as the equivalent: your file is processed entirely in your browser, no network requests during processing. For tools where browser-mode isn’t supported (compress, OCR, format conversions), processing happens on our servers with 1-hour auto-deletion. If you specifically need offline-only desktop PDF software, Sejda’s desktop app fits that need today.
Why is PDFRun cheaper for ongoing use?
Sejda’s headline $7.50/week price is good for one-week burst usage; if you need Pro features for a full month it’s $30, and a full year it’s $39 (or just $7.50 if you only need one specific week). PDFRun Pro is $9/month flat — slightly more than Sejda’s annual rate, slightly less than Sejda’s weekly extended to monthly. For occasional one-off projects, Sejda weekly is genuinely cheaper. For ongoing use, prices are comparable.
Try PDFRun free — no signup needed
Drop a PDF in, run any of our 40+ tools, download the result. No watermark, no task limit, no account.
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