What's the worst CAD PDF your team has ever had to mark up?
Curious about other practitioners' experience.
Quick context: I'm a partner at Noir Architects, a Baltic architecture studio (ArchiCAD shop). For years our team has cycled through Adobe, Nitro, and Bluebeam for marking up exported PDFs. Typical files we deal with: 100–300 MB, 50–300 pages, transparency-heavy with vector overlays. Each tool failed in its own way:
- Adobe — slows to a crawl past about 80 MB. Text edits on CAD-embedded fonts are unreliable. Search across image-heavy pages misses content.
- Nitro — better speed than Adobe on big files, but annotation handling on rotated pages is glitchy.
- Bluebeam — the closest fit for construction markup, but the UI complexity hurts every junior we onboard. We've spent days teaching people to find the five tools they actually need.
Eventually we got fed up and built our own PDF tool. It's been used daily inside our studio for months — heavy ArchiCAD exports no longer freeze, and the interface is intentionally minimal. 14-day free trial, then €12.99/month or €79.99/year if anyone asks.
I'll skip the link in this post (don't want to be that guy). Real question:
What's the worst PDF your team has ever had to mark up, and what tool finally handled it? Specifically interested in:
- File size + page count
- Source software (ArchiCAD / Revit / Vectorworks / AutoCAD / Bricscad)
- What broke (lag, crash, font issues, annotation loss, save corruption)
- What you ended up using and whether it stuck
Honest war stories would help me figure out which bottleneck to attack next.
Disclosure: I'm one of the makers. Happy to share the link in DMs if anyone wants to take a look.