TechDrawAI
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Workflow · 2026
Pairs withAutoCAD logoAutoCAD

TechDraw AI
+ AutoCAD

AutoCAD is the best 2D drafting tool ever written and it still cannot look at a photograph of a part and give you lines. That is the one job it was never built for. TechDraw AI does that half: photo in, dimensioned DWG out. AutoCAD does everything after, with your layers, your title block and your standards. This is the exact handoff, command by command.

maria, TechDraw AI usermustafa, TechDraw AI usersarah, TechDraw AI userdavid, TechDraw AI user
Trusted by 213,000+ usersEngineers, makers and machine shops.
★★★★★
4.8 out of 5
Updated July 2026·Works with AutoCAD and AutoCAD LT
Step in the jobTechDraw AIAutoCAD
Capture from a photo✓✗
Raster photo to vector geometry✓✗
Real measured dimensions✓~
Native DWG and DXF✓✓
Layers, blocks, xrefs✗✓
Layouts, title blocks, plotting~✓
Annotative scale and paper space✗✓

Why pair TechDraw AI with AutoCAD?

Every other CAD workflow on this site ends in a 3D model. This one does not, and that is the point. With AutoCAD the drawing is the deliverable, so the DWG that comes out of TechDraw AI is not a stepping stone to something else. It is already the thing you were trying to make. AutoCAD is where you take it the rest of the way.

Step one

From a photo to a dimensioned drawing

Upload a photo of the part, anchor one real measurement, and get back a clean, dimensioned drawing you can export as DWG or DXF.

PhotoPhoto of a cast iron pillow-block bearing housing on a workbench
DrawingDimensioned technical drawing of a pillow-block bearing housing generated by TechDraw AI
Step two

Then open it in AutoCAD as a real DWG

No import wizard, no translation, no raster underlay to trace over. It is a DWG, so it opens with a double-click and every entity is editable geometry on the layers you expect. For a flat part, that same file goes straight to the cutter.

A laser-cut steel anchor base plate on a bench beside its own printed technical drawing
AutoCADAutoCAD
The bridge

DWG is the seam, and there barely is one

With every other CAD package the handoff is a DXF that has to be imported, unit-matched and constrained. With AutoCAD you can skip all of that and export DWG, the format AutoCAD invented. The file you download is the file AutoCAD opens. DXF is still there when the drawing also has to reach a laser, a waterjet or a shop running something else.

Dimensioned steel anchor base plate drawing exported as DWG
Exports AutoCAD reads
DWG, native, opens with a double-click
DXF, the same geometry for everyone else
SVG, a clean vector for non-CAD tools
PDF, the spec to keep open beside AutoCAD
Opens inAutoCADAutoCADAutoCAD LTInventorFusion 360SolidWorksFreeCAD
An undocumented cast iron pillow-block bearing housing with no drawing
The part in your hand
A caliper measuring the bore of a pillow-block bearing housing
One real measurement
A dimensioned multi-view drawing of a pillow-block bearing housing
Dimensioned DWG
Pillow-block bearing housings bolted to a frame with a shaft through them
Back on the machine
DWG native
AutoCAD's own format, no converter
Photo to DWG
instead of tracing by hand
LT included
no specialised toolset needed
2D is the point
no 3D detour on the way
What are you trying to do?
Rebuild a part nobody drew

A machine goes down, the spare is in your hand and the drawing was never made. Photograph it, anchor one caliper measurement, and open the result in AutoCAD as a real DWG you can detail and issue.

Flat parts skip the modelling entirely

Gaskets, plates, brackets and laser profiles never need a 3D model. The DXF is already the production file. AutoCAD is where you check it, add the notes and plot it.

Get a paper drawing back into CAD

Photograph or scan the old sheet, get vector geometry back, then redraw and correct it in AutoCAD against your current standards instead of retracing every line over a raster underlay.

Stay inside a DWG pipeline

If your shop, your client and your archive all run on DWG, nothing changes. The file lands in the format everyone already uses, with your layers and title block applied on arrival.

Who does what

Division of labour, not redundancy. Each tool owns the half of the job it's actually good at.

Step in the jobTechDraw AIAutoCAD
Capture from a photo✓✗
Raster photo to vector geometry✓✗
Real measured dimensions✓~
Native DWG and DXF✓✓
Layers, blocks, xrefs✗✓
Layouts, title blocks, plotting~✓
Annotative scale and paper space✗✓
Best atPhoto to drawingDrawing to issued sheet
What each tool hands you
TechDraw AI
Dimensioned 2D drawing from a photo
One measured reference dimension
Closed vector profile
DWG, DXF, SVG and PDF export
AutoCAD
Native DWG editing, layers and blocks
Layouts, viewports and annotative scale
Your title block and drawing standards
Plotting, publishing and sheet sets

See it for yourself

Drop in a photo of a part. You'll get a dimensioned drawing and a DWG that opens straight in AutoCAD. No account needed to start.

Image to AutoCAD, the long version
Section 01

The five-step handoff

This is the shortest handoff of any CAD tool we've written up, because DWG is AutoCAD's own format and there is nothing to translate. If the part is flat, like a gasket, a bracket or a laser plate, you can stop after step two and send the file to the machine.

From photo to an issued sheet
1
Export as DWGor DXF, AutoCAD opens both
→
2
OPEN or INSERTas its own drawing, or as a block
→
3
EXPLODE the blockonly if you inserted it
→
4
Check the unitsINSUNITS, then SCALE by reference
→
5
Layer, annotate, plotyour standards, your title block
A printed engineering drawing sheet on a shop-floor bench with a caliper beside it
The end of the line: a sheet the shop can work from.
A freshly laser-cut steel anchor base plate on the slats of a laser cutter bed
For a flat part, the DXF skips AutoCAD and goes to the cutter.
Verdict

Export DWG and there is almost nothing to get wrong. The only three things worth checking are units, whether you inserted a block, and your annotative scale. All three are below.

Section 02

Why AutoCAD can't do this on its own

This is worth being precise about, because “can AutoCAD convert an image to lines” is one of the most-asked questions in drafting and the honest answer has three parts. Two of AutoCAD's three raster commands do something useful. Neither of them does this.

IMAGEATTACH
  • Attaches a JPG or PNG as a raster underlay
  • Nothing is converted, it's a picture behind your lines
  • You trace it by hand, entity by entity
  • Accuracy is whatever your mouse managed that day
PDFIMPORT
  • Pulls real geometry out of a PDF, genuinely useful
  • Only works if the PDF already holds vector geometry
  • A scanned PDF stays a raster image on import
  • So it never helps with a photo of a part
And the one people point to: Raster Design.The Raster Design toolset ships with an AutoCAD subscription and does have genuine vectorisation tools, so the answer isn't a flat no. But there are two catches, and both matter. It vectorises bitonal rasters, meaning pure one-bit black on white, which describes a scanned line drawing and does not describe a photograph with shadows, reflections and a workbench in the background. And it is a specialised toolset, so AutoCAD LT doesn't get it at all. Even when it works, it reproduces the position and size of the raster lines, so you still have no real-world dimensions until you scale and dimension the result yourself.

The short version:AutoCAD can trace a clean scan of a drawing that already exists. It cannot look at a physical object and work out what it measures. That gap is the whole reason this page exists, and it's also why the long-form guide to image to AutoCAD spends most of its time on the same three commands.

Section 03

Three gotchas that waste ten minutes

None of these are hard. They're just the three that catch everyone the first time, and each has a one-command fix.

1. The units, every time.DXF carries no guaranteed unit, so a 50 mm part read as inches lands 25.4× too big. Check INSUNITSand your drawing units first. If it's already in and wrong, run SCALE with the Reference option: pick two points whose real distance you know, type the true value, and the whole thing snaps to size. Export DWG instead of DXF and this mostly stops happening.
2. INSERT gives you a block, not lines. If you brought the file in with INSERT rather than opening it, everything arrives as one block reference and clicking a line selects the lot. EXPLODE it once and you have individual entities again. Do this before you start trimming, not after.
3. Dimensions that arrive the wrong size on the sheet. Model space geometry plus a viewport at a different scale means your text and arrowheads plot far too small or far too large. Set the annotation scale on the viewport, or set DIMSCALE to match, before you decide the drawing looks wrong.

Cleanest habit: export the DWG for the geometry and keep the PDF of the same drawing open on a second monitor as your spec. You draft against clean lines and still have every number in front of you, which beats zooming around the model to read a dimension.

Section 04

AutoCAD LT or full AutoCAD?

For this workflow it genuinely doesn't matter, and that is unusual enough to say plainly. LT is the version most drafting shops actually run, and the handoff here is a file, not a plugin or a script.

What each version can do with the file
CapabilityAutoCAD LTAutoCAD
Open the DWG natively
Open or INSERT the DXF
Edit, layer, annotate and plot
PDFIMPORT of vector PDFs
Raster Design vectorisation
Trace a photo of a part

The partial mark is deliberate. Raster Design is included with a full AutoCAD subscription, but it vectorises bitonal scans, so it covers old drawings and not photographs. On the row that this whole page is about, both versions score the same: no.

Section 05

Where this combo earns its keep

Best tool for each step of these jobs
JobTechDraw AIAutoCAD
Capture an undocumented part
Dimension it to real size
Clean up and correct the geometry
Apply layers, standards, title block
Plot, publish and issue the sheet
Who leads where
Capture & dimensioningTechDraw AI
Photo to vector geometryTechDraw AI
Drafting & editing in DWGAutoCAD
Standards, layouts & plottingAutoCAD
The full pipelineBoth, together
A machinist finishing the bore of a pillow-block bearing housing in a milling machine
A drawing is only worth anything if the shop can cut from it.
Two pillow-block bearing housings bolted to a base frame with a shaft
The replacement part back where it started.
More

Other CAD workflows

TechDraw AI hands a clean, dimensioned DXF to whatever you model in. Here's the same photo-to-3D handoff written up for other CAD tools.

All CAD workflows →

The full hub: every TechDraw AI photo-to-DXF pairing in one place.

TechDraw AI + Fusion 360

Insert the DXF into a Fusion sketch, then extrude or revolve it into a parametric model.

TechDraw AI + SolidWorks

Open the DXF with the DXF/DWG Import Wizard, then build a parametric SolidWorks model.

TechDraw AI + Onshape

Import the DXF, Use the curves in a Part Studio and model it in the browser.

TechDraw AI + Shapr3D

Import the DXF onto a sketch plane, then Push/Pull or revolve it on iPad or Mac.

TechDraw AI + FreeCAD

Import the DXF in the Draft workbench, convert it to a sketch, then Pad or Revolve it — free.

TechDraw AI + Inventor

Import the DXF into a sketch, extrude or revolve it, then drive a production drawing and BOM.

TechDraw AI + SketchUp

Import the DXF in SketchUp Pro, explode it to edges, then Push/Pull or Follow Me into a model.

TechDraw AI + Tinkercad

Export as SVG, import it into Tinkercad in the browser, and extrude it into a printable solid.

TechDraw AI + Blender

Import the DXF or SVG as a curve, convert to mesh, then Solidify or Screw it — free.

TechDraw AI + Rhino

Import the DXF as exact curves, Join them, then ExtrudeCrv or Revolve into NURBS surfaces.

Start at the part, end at a DWG

Generate the dimensioned drawing in minutes, then open it in AutoCAD. No raster underlay, no tracing, no redrawing. Free to start, no account needed.

DWG vs. DXF: which to send

Frequently asked questions

Can AutoCAD convert an image to lines?

Not on its own, and this is the thing most people get wrong. IMAGEATTACH puts a JPG or PNG into your drawing as a raster underlay, which you then trace by hand, line by line. The Raster Design toolset does have real vectorisation tools, but they only work on bitonal (pure black and white) raster images such as scanned line drawings, and they are not available in AutoCAD LT. Pointing them at a photograph of a physical part does not work, because a photo has shading, shadows and a background rather than clean black lines on white. TechDraw AI is built for exactly that case: it reads the photo and gives you back dimensioned vector geometry as a DWG or DXF.

How do I convert a JPG to AutoCAD?

Upload the JPG to TechDraw AI, anchor one real measurement so the geometry comes out at true size, then export the result as DWG or DXF and open it in AutoCAD. That is the whole route. The alternative inside AutoCAD is IMAGEATTACH plus manual tracing, which produces lines that are only as accurate as your mouse and carries no real dimensions at all.

How do I import a TechDraw AI drawing into AutoCAD?

Export as DWG and simply open it, since DWG is AutoCAD's own format. If you want the geometry inside a drawing you already have open, use INSERT to bring it in as a block, then EXPLODE it if you need to edit the individual entities. DXF works exactly the same way through OPEN or INSERT.

Does this work in AutoCAD LT?

Yes. The handoff is a DWG or DXF file, and LT opens both natively. This matters because LT does not get the specialised toolsets, so Raster Design and its vectorisation tools are not available to you at all. If you are on LT, a photo of a part is otherwise something you can only trace by hand.

Why is my drawing the wrong size in AutoCAD?

A DXF carries no guaranteed unit, so a 50 mm part read as inches lands 25.4 times too big. Check INSUNITS and the drawing units before you blame the file. If it is already in and wrong, SCALE with the Reference option: pick two points you know the real distance between, type the true value, and everything comes to size at once. A clean export from TechDraw AI is already scaled to the reference measurement you gave it, so once the units agree it lands real-size.

Can I convert a scanned drawing to AutoCAD?

Yes, and it is one of the better uses for this. Photograph or scan the sheet and run it through TechDraw AI, and you get vector geometry instead of a picture. Note that AutoCAD's own PDFIMPORT only helps when the PDF already contains vector geometry; if the PDF is a scan, the raster stays a raster and you are back to tracing.

Should I export DWG or DXF?

For AutoCAD, DWG. It is the native format, it opens with one double-click, and nothing is translated on the way in. Export DXF when the file also has to go somewhere else, to a laser or waterjet, to a machine shop on different software, or into another CAD package. Both carry the same geometry.