Draw what
you mean.
Walls with thickness. Doors with swing. Windows with width. Place building elements, then refine the details.
DRAWING REVIEW, RECONSIDERED
FOR ARCHITECTS & ENGINEERS / 001Every detail.
Clearly.
Good drawings deserve a better review.
Mark up, measure and work through the details
in one focused PDF workspace.
Start your 7-day trial →See the workspace ↓
No card to start. Your drawings stay private to your account.
A drawing speaks.
Make your mark.
One sheet. Three ways to work.
Choose a mode to explore the illustration.
● A focused drawing workspacePDF IN → CLEARER DECISIONS OUT
YOUR DRAWINGS. YOUR WORKFLOW.
PDF review / Calibrated takeoffs / Architectural markups / PDF & CSV export
LESS FRICTION. MORE CLARITY.
The big picture matters.
So does every millimetre.
A review isn’t just a red line. It’s a question answered, a dimension checked, a change made clear. Redline brings those details together on the drawing.
BUILT AROUND YOUR DISCIPLINE
02 / THE TOOLKITDraw what
Give systems
their space.
Columns, pipes, ducts and risers, with size controls that speak your language.
Every measure.
Accounted for.
Lengths, areas, volumes and continuous counts. Turn drawing details into quantities you can review.
NET AREA24.80 m²
FROM FIRST LOOK TO FINAL EXPORT
03 / THE PROCESSKeep the work moving.
Bring the drawing.
Open your PDF and get oriented. Organize the pages around the work ahead.
Work the detail.
Calibrate, mark up and measure. Keep the comment connected to the drawing.
Make it useful.
Export a marked-up PDF or a CSV report to carry your review into the next step.
START WITH .PDFLEAVE WITH .PDF .CSV
A SMALLER LINE IN YOUR BUDGET
Serious tools.
Simple pricing.
One plan for individual architects and engineers. Choose the billing rhythm that fits your practice.
The trial needs no card and ends without charging you. Taxes and the exact amount in your currency are shown at checkout, before you confirm.
Redline Individual
7-DAY TRIAL- PDF markup and review tools
- Calibrated measurements and takeoffs
- Architectural and engineering elements
- PDF and CSV export
Every tool from the first day. Subscribe inside your workspace when the trial ends.
Questions before you start? Email us.
BEFORE YOU DRAW THE LINE
A few good
questions.
Can I use Redline today?+
Yes. Create an account and you have seven days with every tool, no card needed. Your drawings are saved to your private workspace, and you can download them at any time — during the trial and after it.
Who is Redline built for?+
Architects, engineers and drawing reviewers who need to annotate PDFs, check dimensions, count items and communicate design changes.
What can I export?+
The current editor supports marked-up PDF export and CSV markup reports. Its drawing and export systems share the same appearance geometry.
Will my drawings be private?+
Yes. A drawing is stored under your account only, encrypted on the server and never visible to another account. The editor can also keep a copy on your own disk. This page takes no uploads — your workspace does.
Can I see prices in my own currency?+
Prices are in USD. At checkout you see an estimate in your local currency and the exact amount, including tax, before you confirm anything.
YOUR NEXT REVIEW STARTS HERE.
Make room
for better work.
Seven days, no card,
every tool from the first day.