Free Tool · markup CAD drawing online
Markup CAD Drawing Online
Review shop drawings without Bluebeam or AutoCAD. Circle issues with arrows and notes, then download a marked screenshot for email or RFIs.
Parsed locally · not uploaded by default · no AutoCAD required
Free
Price
DWG / DXF
Formats
None
Install
Not required
AutoCAD
What this tool includes
Full markup CAD drawing online functionality search text, toggle layers, measure distances, and export labels. Built for AEC CAD review workflows worldwide.
- Upload DWG/DXF
- Click Mark up
- Download screenshot
Lightweight drawing review
Owners, GCs, and inspectors often need to point at problems on a plan — not edit the DWG. CadPeek adds a review layer on top of your drawing without changing the original file.
How to use markup CAD drawing online
Three steps no training, no AutoCAD license, no IT install.
- 1
Upload DWG/DXF
Drawing opens in the browser viewer.
- 2
Click Mark up
Choose Arrow, Box, or Note and click on the sheet.
- 3
Download screenshot
Save a PNG with your red markups for your team.
Operation guide
How to Mark Up CAD Drawings Online Without AutoCAD
Step-by-step tutorial · 6 min read
Used worldwide for CAD review
Use our free markup CAD drawing online from any country — no AutoCAD license required. CadPeek is built for contractors, engineers, inspectors, and building owners who receive DWG/DXF files by email and need instant browser access. Popular in the US, Canada, UK, Australia, and international projects with bilingual layer naming.
United States
NFPA, AHJ, MEP contractor, shop drawing review, IBC
Canada
CAN/ULC, building submittal, code review, MEP drawings
United Kingdom
BS 5839, MEP drawings, BIM exchange DXF
Australia
AS 2118, services drawings, hydraulic plans
Global / Asia
bilingual CAD layers, DXF exchange, imported drawings
markup CAD drawing online vs AutoCAD
For viewing and reviewing CAD drawings — not editing geometry.
Built for these roles
- ·Contractors
- ·Engineers
- ·BIM coordinators
- ·Reviewers
FAQ markup CAD drawing online
Common questions about our free online markup CAD drawing online tool.
- Does markup change my DWG file?
- No. Markups are a separate review layer saved in your browser (and optional screenshot export). Your original file is not modified.
- Is this the same as Bluebeam?
- CadPeek offers lightweight browser markup — arrows, boxes, notes, and PNG export. It does not replace full redline/PDF workflows or collaborative issue tracking.
- Do I need AutoCAD installed?
- No. All tools run in your browser with WebAssembly CAD engines. Upload DWG or DXF and work immediately on Windows, Mac, Linux, or tablet.
- Is my drawing uploaded to your servers?
- By default, files parse locally in your browser. Upload only happens when you explicitly create a Share link or use cloud features.
- What is the free file size limit?
- Free accounts can open files up to 15MB. Starter ($8.8/mo) supports 50MB, Pro 100MB, and Team 200MB per drawing.
- Which DWG versions are supported?
- AutoCAD DWG R12 through 2024 and DXF (ASCII and binary). Most 2D shop drawings open cleanly.
- Can I use these tools on iPad or Android?
- Yes. The viewer and all tool pages work in modern mobile browsers — useful for field review with the measure tool.
Try Markup CAD Drawing Online now
Free markup CAD drawing online for contractors, engineers, inspectors, and building owners. Launch the tool above or open the full-screen viewer.