Multi-user markup
Several people annotate and measure one drawing simultaneously. No file locking, no "who has the current copy" email chain.
Plan collaboration
Same drawing, everyone on it, right now.
Multiple users work the same sheet at the same time — one marking up, one measuring. Share a link to the live document and the owner, architect, or sub watches changes land as they happen.
Why teams use it
Organized around the sheet set.
Live share links
Send a link and external parties view the live document — markups and measurements update in front of them as work continues.
The field connects by QR
The project poster and QR tags on printed sets bring the crew into current plan context with a phone camera, no app install.
FAQ
Common questions
Can two people mark up the same drawing at once?
Yes. Multi-user collaboration on the same drawing is built in — markup and takeoff work happen side by side.
Can outside collaborators see the plan without an account?
Yes. A live share link shows the current document, including markups and measurements as they continue to change.
How does Redliner help avoid stale plans?
AI compares versions and calls out changes, old sets stay archived, and shared links always point at the live document instead of a static attachment.
Review the same drawing, from anywhere.
Start a Redliner workspace for shared plan markup, takeoff, and field review.