Plan Revisions, Comparison Tools, and Increased Measurements Limit

Plan Revisions

Plans change. The architect issues a new set, walls move, rooms get resized, pages get added or removed. Until now, you had to delete your document and start over, losing all your measurements.

Now you can upload revised plans directly to an existing document. Click the revision dropdown in the toolbar (shows "Rev 1" by default), hit Upload New Revision, and select the updated PDF. Your original plan stays intact, your measurements stay exactly where they are, and the new revision sits alongside the original ready for comparison.

Each revision gets a number and an optional label you can edit (like "ASI #3" or "March 6 Revision"). Delete old revisions you no longer need. The revision dropdown shows your full history with the active revision highlighted.

Comparing Revisions

After uploading a new revision, a subtle "Compare to see what changed" prompt appears. Click it (or hit the compare icon on any non-active revision) to enter comparison mode.

Two view modes let you inspect differences:

Toggle. Click between Original and Revision to flip back and forth instantly. The keyboard shortcut is backslash (). Good for spotting changes by visual memory as the view snaps between versions.

Swipe. A draggable divider splits the screen. The original plan sits on the left, the revision on the right. Drag the handle to reveal more of either side. Good for checking exact alignments, wall shifts, and dimensional changes.

Both modes support full pan and zoom. Navigate pages normally while comparing. If the revision has a different page count, a page mapping modal lets you match pages between the two versions so you are always comparing the right sheets.

Change Detection

While you compare, the system analyzes each page pair in the background. Amber dashed rectangles appear over areas where the plans differ. A summary in the comparison toolbar shows how many pages have changes, how many are identical, and whether analysis is still running.

This is not a line by line diff. It is a visual comparison that catches moved walls, resized rooms, added details, and removed elements. The goal is to point you toward the areas that matter so you can decide which measurements need a second look.

Promoting a Revision

When you are satisfied that the new revision is correct, click Promote in the comparison toolbar. A summary modal shows you:

• How many measurements sit on pages that changed
• Whether page numbers need to be remapped (if the revision added or removed sheets)
• A snapshot of your current measurements is saved before anything changes, so you can roll back if needed

After promotion, the new revision becomes the active plan. Measurements on changed pages get a small orange Review badge in the sidebar. Click the badge to dismiss it once you have verified that measurement is still accurate. This way nothing gets lost, and you have a clear checklist to work through after every revision.

1,000 Measurements Per Document

The per-document measurement limit has been doubled from 500 to 1,000. Large commercial plan sets with hundreds of rooms, detailed MEP layouts, and multi-trade takeoffs all benefit from the extra headroom.

When you get close to the limit, a banner appears at the top of the workspace telling you how many measurements you have and how many remain. If you hit the cap, the banner tells you to delete some measurements before adding new ones. The limit applies consistently across all actions: drawing, duplicating, pasting, and importing.

Under the Hood

• Revision uploads use presigned URLs for fast, direct-to-storage transfers with progress tracking
• Page mapping handles added, removed, and reordered sheets between revisions
• Review status persists across saves and reloads
• Database-level enforcement of resource limits (documents, revisions, share links, text field lengths) for tighter security