Drawliner

Mark up drawings and measure quantities — right in your browser.

Free, no-install PDF markup and takeoff for construction estimators. Open a drawing, calibrate scale, measure, export to Excel.

Open a Drawing — Free Try the Sample Project

How it works

STEP 1

Open your PDF

Drag in any construction drawing — no install, runs in your browser.

STEP 2

Calibrate scale

Click two points over one known dimension, once per drawing.

STEP 3

Measure

Length, area, volume, count, perimeter, angle, diameter, and radius — directly on the page.

STEP 4

Export

Send your takeoff to Excel or CSV in one click.

Full markup toolkit

Text, callouts, stamps, signatures, clouds, arrows, and custom tools — annotate like you would on paper.

Real takeoff math

Length, area, volume, perimeter, angle, and true diameter/radius geometry — not approximations.

Save and pick up later

Autosave, local backup, and cloud project save so you never lose work on a refresh.

Your drawings stay yours

We never analyze, share, or sell uploaded files. Passwords are stored as salted hashes. See our Privacy Policy for the full details.

Frequently asked

What file types are supported?

PDF only, up to 200MB per file.

Does Drawliner auto-detect scale?

No — scale calibration is a quick one-time manual step per drawing: click two points over a known dimension, enter the real-world length, and every measurement on that page is accurate from then on.

Is my data private?

Yes. Files and project data are stored on an isolated disk and tied to your account — we don't read or share the content of your drawings.

Is it really free?

Yes, the core markup and takeoff tools are free to use.