Observed arrival · 2026-09-19
Redline PDF, a Takeoff Desk in the Browser
A browser workspace for architects and engineers to mark up PDFs, calibrate drawings, measure quantities, and export reviewable results.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Architects and engineers reviewing drawings
- Worth noticing
- The workflow covers calibrated measurements, building elements, markup status, editable PDF annotations, and CSV quantity export.
Field notes
The workflow is organized around sheet calibration followed by review, measurement, and element-building stages. Examples include walls with thickness, doors with swing, windows with width, and engineering elements such as pipes and ducts. The free tier retains basic markup tools and up to three saved drawings after the seven-day Pro trial, while paid plans add broader takeoff and export capabilities.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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