Guides
Turn a PDF into a floor plan with AI: from drawing to editable plan
Short answer: from an architect’s vector PDF, software can read walls, doors, windows, room names and the scale fairly reliably. From a scan or a photo the walls are recognised, but you check or retype the sizes yourself. From a hand sketch you get the layout at best. AI, Claude included, reads sizes from an image, so it can misread one. Always check one size you know for sure before you deliver the plan.
You have a drawing of the home, but not in a form you can work with: a PDF from the architect, a scan from a building archive or a photo of a sketch. Redrawing it takes an hour. Can software not just read it? More and more often it can, but it depends a lot on what you put in. Below: what reading a drawing means, the three kinds of source, what recognition and AI do and do not get right, and how it works step by step in Dinoplan, with and without Claude. Dinoplan is our own product; we say so here and we say where it falls short.
What does reading a floor plan mean?
Reading a drawing means software takes out the parts you need: where the walls are, where the doors and windows are, what the rooms are called, the scale and, if that works, the area of each room. The result is an editable floor plan, not a picture. You can move walls, have areas calculated and export to PNG, PDF or FML.
People also call this digitising a drawing, converting a PDF floor plan or vectorising a floor plan. It comes down to the same thing.
Three kinds of source, three levels of reliability
| Source | What is in it | What reading gives you |
|---|---|---|
| Vector PDF from the architect (exported from CAD) | Real lines, texts and sizes as objects | Walls, doors, windows, room names and scale can be read directly. The most reliable. |
| Scanned PDF or photo of a drawing | Only pixels; lines are grey, sometimes skewed or smudged | Walls are recognised from the lines; you retype the sizes from the drawing. Needs checking. |
| Hand sketch | Pixels, no fixed scale, walls not straight | A rough layout; you type the sizes yourself. Mostly saves time setting up. |
How do you recognise a vector PDF?
Zoom in. If the lines stay sharp at every zoom level and you can select text with the mouse, it is vector. If it turns grainy and you cannot select anything, it is a scan. Many building drawings made after 2000 are vector. Older drawings from a municipal archive are nearly always scanned.
Want to try it? Open the sample home, no account needed.Want to try it on your computer? Email yourself the link.
What AI and automatic recognition can and cannot do
The word AI is used loosely here. A vector PDF needs little artificial intelligence: the lines and texts are already in the file as data, and software only has to recognise them as a wall, a door or a room name. With a scan or photo, software has to get lines out of pixels, and that brings uncertainty.
Reliable, especially with vector:
- The position and length of walls.
- Doors and windows drawn as a symbol.
- Room names that are in the drawing as text.
- The scale, if there are dimension lines with numbers.
Often right, sometimes wrong:
- Wall thickness. With a scan it is estimated from the line width. An outer wall of 30 cm can become 25 or 35.
- Rooms that flow into each other. An open kitchen and the living room sometimes become one room, sometimes two.
- Doors without a swing. A door drawn only as a gap in the wall gets missed.
- Stairs and niches. Many short lines close together confuse recognition.
Not reliable without your check:
- The scale of a scan without a readable size. An A3 drawing copied onto A4 is 30 percent smaller than its scale label says.
- Areas. They are only reliable once the scale and the wall thicknesses are right.
- Heights. A floor plan says nothing about ceiling heights under a sloping roof. You get those from a section drawing or on site.
The golden rule for every drawing that has been read: check one size you know for sure. If the drawing says the living room is 5.40 m wide, measure that in the new floor plan. If that one size is right, the scale is right and every other size is in proportion.
Step by step: reading a PDF in Dinoplan
This is how Dinoplan reads an architect’s vector PDF, without Claude:
- Open the PDF in Dinoplan. Dinoplan sees that it is a vector drawing and converts it.
- Dinoplan reads the drawing. Walls, doors, windows, room names and the scale come out of the drawing. If one sheet holds several floor plans, for example ground floor, first floor and attic, each plan becomes its own floor.
- Check one size with the tape measure tool. Take a size that is on the drawing and measure it. If it is right, the rest is right.
- Go through the doors and windows. A door that was only a gap in the drawing you add yourself. That is a few clicks.
- Check the rooms. Are the open kitchen and the living room one room or two? Dinoplan puts the area per room on the drawing, so you see straight away whether the layout matches the original.
- Export. PNG or PDF for a brochure, FML for an agent who uploads it to Funda. Read what an FML file is.
A scan, photo or hand sketch
Is the PDF scanned, or do you have a photo of a drawing or a sketch? Then Dinoplan puts the image in the background and looks for the walls in it. You type the sizes written next to the walls yourself. That turns rough recognition into a floor plan with real sizes. If there are no sizes on it, you need at least one size measured on site to fix the scale, and you trace the rest by eye over the background. A DXF file can be traced the same way.
This happens in your browser. For this import, the drawing is not sent to an AI or cloud service.
Letting Claude draw the plan
On the Agency plan you can connect Claude, the AI assistant made by Anthropic, to your Dinoplan account. Then you attach a PDF from the architect, a photo of a sketch with sizes or an old floor plan to a message in Claude and ask: “Make a new project of this in Dinoplan.” Claude reads the sizes from the drawing, builds the rooms on inside sizes, adds doors and windows, and in its reply says which sizes it estimated and what it left out. The project you have open in Dinoplan updates within a few seconds. After that you keep adjusting by asking, for example “make the living room one metre wider” or “put a 90 cm sliding door between the hall and the kitchen”.
Be clear about what this is:
- Claude reads from an image. It can misread a size. That is less precise than the import in Dinoplan itself. If you have a PDF from a drawing program, importing it in Dinoplan is often more accurate.
- Sizes on the drawing help. It works best with a drawing that has sizes on it. With a sketch without sizes, Claude asks you for a few first.
- You check before you deliver. Open the project, compare the areas with the drawing and look at the doors. Then tell Claude what needs to change.
- FML and DXF are not redrawn. Claude reads those files directly with Dinoplan’s own import.
- Your drawing goes to Claude. Unlike the import in your browser, Claude has to see the drawing to read it. You pay for Claude’s use at Anthropic; the connector itself costs nothing extra at Dinoplan.
Connecting takes a couple of minutes. The steps are on Claude and Dinoplan.
Reading, scanning or tracing?
| Method | When | Downside |
|---|---|---|
| Reading a PDF or image | You already have a drawing of the home | You depend on the quality of that drawing; changes made after it was drawn are not in it |
| Scanning on site with an app | There is no drawing and you are in the home | Furniture and glass disturb the scan |
| Tracing by hand | The drawing is poor or recognition misses too much | More work, but you know exactly what is there |
Often you combine them: read the drawing for the basis, check a few sizes in the home, and fix by hand what is wrong. Dinoplan has no scanning app of its own. It is for reading, tracing and drawing.
Want to try it with a drawing? Start for free, with a watermark on the export. A single floor plan costs €2.99, Pro €19.99 a month and Agency, with the Claude connector, €49.99 a month for five users. All plans are on pricing.
Frequently asked questions
Can AI turn a PDF into a floor plan?
From an architect’s vector PDF: yes, walls, doors, windows, room names and scale can be read directly. From a scanned PDF the walls are recognised from the lines, but you check or retype the sizes.
How accurate is a floor plan read from a drawing?
From a vector PDF, as accurate as the drawing itself. From a scan it depends on how sharp it is and whether the scale is right. Always check one size you know for sure; if that one is right, the rest is in proportion.
Can Claude draw a floor plan from a PDF?
Yes, with the Dinoplan connector on the Agency plan. Claude reads the sizes from the drawing and builds the project in Dinoplan. Because it reads from an image, it can misread a size, so you check the result before you deliver it.
Is my drawing uploaded to an AI service?
Not with the import in Dinoplan: that happens in your browser. With the Claude connector, yes: you give the drawing to Claude so it can read it.
Are the areas calculated straight away?
Yes, Dinoplan shows the area per room as soon as the rooms are there. Check the scale and the wall thicknesses first, or the areas will be off.
Can I get several floors out of one PDF?
Yes. If ground floor, first floor and attic are on one sheet, each plan becomes its own floor in Dinoplan.