Mark · Sketch · Handoff
Mark.
Free PDF markup built for construction. Sketch it, measure it, cloud it, hand it off.
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Drop a PDF here — or click to open
Plans, submittals, RFIs, shop drawings… also drop a saved .mark.json to resume a markup session.
🔒 Your drawings never leave your computer. Mark runs entirely in your browser — files are not uploaded or stored unless your company connects SharePoint.
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Sketch
Pen, highlighter, lines, arrows, shapes — smooth freehand sketching over any sheet.
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Measure
Calibrate the sheet scale, then take lengths, areas, and counts right off the drawing.
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Cloud
Revision clouds — rectangular or drawn point-by-point — with callouts and stamps.
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Handoff
Export a flattened PDF anyone can open, or save markups back to SharePoint.
Run the whole job, not just the markup.
Mark is built by ManageSH — bids, estimates, change orders, RFIs, WIP, and field meetings in one place. ManageSH subscribers get Mark Pro (SharePoint + no ads) included free.