Measure to scale
Pick a standard scale or calibrate from any known dimension. Measure lengths, runs and areas in feet-inches or metric, with points that snap to the lines in the drawing.
PDF viewer & editor for Windows
Mark up. Measure.
Get it signed.
Pagenib opens big PDFs in a blink and gives you the tools you actually use: markups, measuring to scale, form filling and digital signatures. Everything you save is a standard PDF that opens properly in any other PDF app.
Text boxesCalloutsRevision cloudsLengthPolylengthAreaCalibrateSnap to drawingHighlighterStampsSticky notesFormsDigital signaturesCompressDark pagesDimension linesDate & initialsDocument tabsExplorer previewsWorks offline
Features
Everything you reach for.
Nothing you don't.
A focused toolset for people who live in PDFs: drawings, contracts, permits and forms.
Mark up anything
Text boxes, callouts, clouds, arrows, shapes, highlighter, pen, stamps, images and sticky notes.
Fill forms & sign
Type into fillable PDF forms, add the date and your initials, and sign with a digital ID other apps can verify.
Fast with huge files
Large-format sheets and long sets open quickly and stay crisp at any zoom. Keep many files open in tabs.
Standard PDF, no lock-in
Markups are saved as normal PDF annotations, and measurements stay measurements, in whatever app your team opens them with.
Page tools built in
Insert, delete, rotate and flatten pages. Search the text, shrink files with Compress, and switch to dark pages for late nights.
At home on Windows
PDF previews in File Explorer, one window with tabs for every file you open, no administrator needed to install, and it works offline.
Measuring
From drawing to numbers in three clicks.
- 01
Set the scale
Choose 1/4" = 1'-0", 1:50 or any standard scale, or calibrate on a dimension you trust.
- 02
Click the points
The magnet snaps to line ends, corners and crossings, so you land exactly where you meant to.
- 03
Read the total
Lengths, runs and areas appear on the sheet and in the Markups list, ready to save.
Tour
Clean, familiar, out of your way.
Tools down the side, settings across the top, your drawing in the middle.
Measure length and area at scale
0%
standard PDF annotations
0
accounts or sign-ins needed
0+
markup and measuring tools
0
window for all your files, in tabs
Get Pagenib
Free. No account, no ads, no tracking. Keeps itself up to date.
Mac
Coming later
Every download comes from GitHub or the app stores, never from a third-party mirror. All versions and release notes
FAQ
Questions, answered.
Will other PDF apps see my markups?
Yes. Pagenib saves everything as standard PDF annotations. Markups, measurements and page scales open in other PDF viewers and editors, and measurements stay real measurements.
Can I measure in metric?
Yes. Set metric scales like 1:50 or 1:100, calibrate in mm, cm or m, and show results in metric or feet-inches.
Is Pagenib free?
Yes, Pagenib is free to download and use. There's no account, no ads and no tracking.
Where does the download come from? Is it safe?
Installers are published on GitHub and will also be offered through the Microsoft Store (and the Mac App Store later). The Windows installer and app are digitally signed by the developer, so Windows can confirm who made them and that they haven't been changed.
Windows says "Windows protected your PC". What do I do?
Pagenib is signed, but its certificate is new, so for a while Windows SmartScreen may still ask first. Check that a publisher name is shown (not "Unknown publisher"), then click More info and Run anyway.
How do I get updates?
Pagenib checks for a new version about once a day and offers to install it for you. You can also check any time with Help > Check for Updates.
Do my files leave my computer?
No. Your PDFs and markups stay on your computer. See the privacy policy.
Can I make Pagenib my default PDF app?
Yes. The installer offers it on its last page and opens the right Windows setting for you.
Is there a Mac version?
It's planned. The app is built to run on Mac too; the Mac installer comes after the Windows version is finished.