Do we need CAD or a PDF license to review drawings?

No. MarkSphere runs in the browser. Upload PDF drawings and mark them up directly on the sheet — no desktop CAD seat or separate PDF license required to review.

Can several people mark up the same drawing at once?

Yes. Teammates mark up the same sheet at the same time, and every annotation carries its author and timestamp, so review stays one attributed conversation.

Can we export a clean copy?

You can download the marked-up PDF with annotations flattened in, or the untouched original — per document or all at once — whenever the drawing has to leave the building.

MarkSphere for AEC

PDF Markup Software for AEC Teams

Review, mark up, and collaborate on project drawings in one connected workspace. MarkSphere brings AEC drawing review out of email threads and disconnected copies — and keeps the drawings connected to the OperionSphere projects they belong to.

AEC PDFs aren't ordinary office documents

They contain plans, details, annotations, dimensions, engineering information, and field conditions. MarkSphere treats them that way: upload PDF drawings and mark them up together in the browser, with every annotation attributed to its author.

No more disconnected conversations or version confusion

PDF copies, email attachments, and screenshots split review across inboxes. A shared workspace keeps comments, revisions, and reviewers in one place, so there is one current set instead of five conflicting copies.

Connected to the project

Link a drawing workspace to its ProjectSphere project so the plans stay beside the work they inform, and export the marked-up or clean PDF whenever a drawing has to leave the building.

AEC PDF markup questions

Do we need CAD or a PDF license to review drawings?: No. MarkSphere runs in the browser. Upload PDF drawings and mark them up directly on the sheet — no desktop CAD seat or separate PDF license required to review.
Can several people mark up the same drawing at once?: Yes. Teammates mark up the same sheet at the same time, and every annotation carries its author and timestamp, so review stays one attributed conversation.
Can we export a clean copy?: You can download the marked-up PDF with annotations flattened in, or the untouched original — per document or all at once — whenever the drawing has to leave the building.