Quantum PDF
Early Access · Feedback Welcome

Professional PDF Editing for Windows.
No Cloud. No Subscription.

Merge, edit, redact, sign, compress, and convert PDFs — completely offline. Your files never leave your PC.

⬇ Free 30-Day Trial Why Quantum PDF?
Quantum PDF screenshot
Why Quantum PDF?

Everything a professional PDF editor should be.

No cloud. No subscription. No data leaving your machine. Just a fast, professional PDF editor that runs on your Windows PC.

🔒

Your Files Stay Private

100% offline. Your PDFs never touch a server — not ours, not anyone's. Perfect for legal, financial, and medical documents.

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Pay Once, Own It Forever

Most PDF tools charge you every month, forever. Quantum PDF is just $9 — one-time, lifetime. No renewals, no surprises, no price hikes.

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Faster Than Cloud Tools

No upload wait times. Merge 50 PDFs in 60 seconds, compress a 100MB file instantly — all on your local machine.

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Blank Page Detection

Unique to Quantum PDF. Automatically detect and remove blank pages from scanned documents — saving you time on every scan.

How it works

Open a file, do the work, move on

No accounts, no uploads — everything happens locally on your PC. Your data never leaves your machine.

1

Download & Open Any PDF

Install in under 2 minutes. Drag a file in, right-click "Edit with Quantum PDF" in Explorer, or set it as your default. Work on multiple documents in real tabs — no juggling windows.

2

Edit, Redact, Sign & Convert

Rearrange pages, edit text in-place, permanently redact sensitive content, attach digital signatures, auto-detect blank pages — all from one ribbon, no internet needed.

3

Save Instantly — Offline

Save back to the same file, export to Word/Excel/Image, flatten annotations, and password-protect — all in seconds, fully offline. No upload, no wait.

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Unique: Blank Page Detection

Quantum PDF automatically scans your document for blank pages common in double-sided scans. Removes them in one click — a feature no other affordable PDF editor offers.

Feature tour

Every tool you need, nothing you don't

Quantum PDF's ribbon is organized into tabs. Here's what you can do — and why it saves you time.

Home — everyday file & page tools
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Merge PDFs

Combine 50+ PDFs in 60 seconds — offline, no upload, no size limit.

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Extract Pages

Split out exactly the pages you need into a new file — instantly.

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Rotate & Rearrange

Fix sideways scans and drag pages into the right order in seconds.

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Digital Signature (DSC)

Attach a legally-binding Digital Signature Certificate in one step.

Edit Document — the full editing surface
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Edit Text In Place

Click directly into existing PDF text and change it — no workarounds, no re-export.

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Permanent Redaction

Permanently remove sensitive text — once redacted, it cannot be recovered.

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Fillable Form Fields

Add text boxes, checkboxes, dropdowns, and signature fields any PDF reader can fill.

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Stamps & Flatten

Apply Draft/Approved/Confidential stamps, then lock them so they can't be moved.

Convert — in and out of PDF
W

PDF ↔ Word / Excel

Get an editable .docx or .xlsx from any PDF in seconds — 100% offline.

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OCR — Searchable PDF

Make scanned PDFs searchable and selectable with built-in OCR. No cloud service needed.

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Compress & Optimize

Shrink a 50MB PDF to under 5MB before emailing — in seconds, locally.

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Page Numbers & Headers

Add consistent page numbering or headers across the whole document in one action.

Review — markup & security
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Highlight & Markup Pen

Highlight text or draw freehand notes directly on the page for fast review.

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Shapes & Links

Add arrows, boxes, circles, and clickable link annotations in seconds.

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Password & Permissions

Set open/print/copy restrictions to control exactly who can do what with your PDF.

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Blank Page Detection

Auto-scan and remove blank pages from scanned documents — unique to Quantum PDF.

Help shape Quantum PDF

We're looking for early feedback

This build is in active trial. Two minutes of your feedback — what worked, what didn't, what's missing — goes directly into what gets fixed or built next.

Share your feedback
Common Questions

Frequently Asked Questions

Simple, Honest Pricing

Try it free for 30 days, then own it for $9

Start with a free 30-day trial. Own it forever for just $9 when you're ready. No hidden fees, no surprises.

Free Trial

Free / 30 days
  • Full feature access
  • All tools unlocked
  • No account required
  • Full feature access
⬇ Download Free Trial

Full License

$9 lifetime
  • All features, forever
  • Free future updates
  • Personal & professional use
  • Volume pricing available
Get Your License →
Stay in the loop

Free PDF tips & a discount code

Join our newsletter — get practical PDF workflow tips and an exclusive discount when we launch the next version.

Start Your Trial Today

No account. No upfront commitment. Download, install, and start editing PDFs offline — completely free for 30 days.

⬇ Download for Windows — Free 30 Days

Windows 10 / 11 (64-bit) · ~150 MB · Installs in under 2 minutes

Then own it for life for just $9 — one-time