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Ventus
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A fast PDF editor, yours for €10.

Ventus reads, edits, signs and converts PDFs on Windows, macOS and Linux. It is a native app written in Rust, with its own rendering engine. It works offline, with no account and no subscription.

Available on Monday 16 November

Free forever if you download it in the first 24 hours. After that, €10.

See why it is fast
Ventus with a report open: thumbnails on the left and a page with a bar chart and a table.

It renders pages faster than Chrome's engine.

Almost every PDF reader renders with PDFium, the engine in Chrome. Ventus has its own. On a single core it takes between half and four fifths of the time, and the page looks just as good.

Ventus PDFium = 1 Lower is better
  • Construction drawings 0.50
  • Technical specifications 0.71
  • Papers 0.74
  • Reports with charts 0.80

How it was measured: geometric mean per type of document over 240 pages of public documents, at 800 px, on one core, best of 5 runs. Windows 11, November 2026. Of 291 test pages, Ventus's own engine renders 240 and PDFium renders the rest.

A 40 MB map is sharp in 0.23 s.

An ordinary PDF takes 0.05 s. A heavy one, such as a 40 MB USGS topographic map, takes 0.23 s. The difference is less than two tenths of a second.

0.23 s Heavy PDF USGS map, 40 MB

0.05 s Ordinary PDF

Each ball crosses the line in the measured time, at real speed.

Time from opening the file until the page is sharp. Median of 5 openings on a desktop PC with Windows 11, November 2026.

One PDF, from opening it to signing it.

What you see is the real Ventus, with the same document from start to finish.

  1. Ventus with a three-page proposal open and thumbnails on the left.

    Read

    You open the document and it is already sharp, with thumbnails, bookmarks and search at the side.

  2. A sentence highlighted in yellow and a note in the margin.

    Annotate

    You highlight what matters and leave a note in the margin for whoever reads it next.

  3. Edit mode: paragraphs in boxes, one word selected and the formatting bar.

    Edit

    Every paragraph is a text box. You change a word or a figure in the original font.

  4. The signature placed on the signature line at the foot of the page.

    Sign

    You type or draw your signature and place it on the line.

  5. The export dialog with Word (.docx) selected.

    Export

    You take it to Word, Excel, PowerPoint or images, with OCR if it was a scan.

Three things you only get in Ventus.

  1. The notebook
  2. Reference balloons
  3. Fit to text
A paper on the left and, on the right, the Ventus notebook with handwritten notes and a sketch.

An endless ruled sheet next to the PDF.

Write and draw freehand while you read. The notebook sits beside the document and never runs out.

A balloon over citation [1] of a paper with the full reference and its DOI.

The citation, without leaving the page.

Hover over a citation, a figure or an equation and a balloon shows you what it points to, with its DOI or its arXiv link.

A two-column page and, beside it, one of its columns enlarged to the width of the window.

The column, as wide as the window.

The column under your pointer grows to fill the whole width. Two-column papers read without touching the zoom.

From scanned paper to text you can edit.

OCR recognises the scanned letter and turns it into real text: you can search it, select it and correct it like any other PDF.

A scanned letter with no selectable text. The same letter with its paragraphs in text boxes and the cursor inside a figure.

It also scans, turns 3D parts and speaks 16 languages.

OCR and scanning

Scan from Ventus and search inside documents that until then were a photo.

A scanned letter with the searched word highlighted.

3D PDFs

Turn the model, change the view and hide parts to see what is inside.

A 3D model of a turbine inside a PDF.

16 languages

The interface comes in 16 languages, including those written from right to left.

The Ventus export dialog in Arabic, laid out from right to left.

It also fills in and creates forms, compares two versions, organises pages, protects documents and saves as PDF/A.

What the usual editors do, without the fee.

Ventus against three well-known PDF editors: how you pay, price, systems and features.
VentusSubscription editorYearly-fee editorLicensed editor
How you payOnceEvery monthEvery yearOnce; new versions cost extra
Price€10€24.19 a monthUS$129.99 a yearUS$62
WindowsYesYesYesYes
macOSYesYesYesNo
LinuxYesNoNoNo
Edit textYesYesYesYes
SignYesYesYesYes
OCRYesYesYesYes
ConvertYesYesYesYes

Prices of the individual plan on each program's official website on 10 November 2026; the subscription one, with a one-year commitment. None of those programs is related to Ventus.

€10. Once.

No subscription and no account. You pay, the key arrives by email and Ventus is yours.

It comes out on Monday 16 November 2026. Anyone who downloads it in the first 24 hours keeps it free forever.

Available on Monday 16 November

The key arrives by email
As soon as the order is done. Without a key, Ventus opens and reads PDFs but does not edit.
Good for 3 computers
The desktop, the laptop and one more.
30 days offline
Ventus works without internet, and the key stays valid for up to 30 days in a row without connecting.
Polar takes the payment
Polar is the seller and issues the receipt. If you lose your key, you can recover it in their customer portal.