Observed arrival · 2026-10-16
Redpen: PDF takeoff for construction drawings
A desktop app for marking up construction PDFs, measuring quantities, and exporting takeoffs to Excel.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Construction estimators and project crews
- Worth noticing
- The site says drawings stay local, with no uploads; markups can be saved as standard PDF annotations.
Field notes
The described workflow starts with setting a drawing’s scale, then measuring lengths, areas, perimeters, volumes, or counts; takeoff totals can be grouped for Excel export. For review, the site describes a markup list that records author, status, and comments, plus sheet overlays for comparing revisions. It says PDFs are opened and saved locally and that saved markups use standard PDF annotations.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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