SVG export : scale issue

[Paige]

• operating system and version : Windows 11 V24H2. Affinity Designer is current 2.6.3
   
•    Is hardware acceleration (in Preferences > Performance) ON (Invidia RTX 4070)
   
•    What happened for you, Provide a recipe : Created a circle 1000mm in diameter, exported it as an svg. Imported it into Blender 4.4 and the measurements are  800mm now diameter. Did the same test with a square 2000mm in AD, exported svg, import into Blender 4.4, measures are now 1599.7mm? To verify that it is not an import issue with Blender I tested this with other 2d illustration software and had NO issues (the imported scaling was correct). 

[Oufti]

Check if there is no scaling:

https://affinity.help/designer2/English.lproj/pages/GetStarted/drawingScale.html

P.S.
Sorry, testing proves that it would be visible in the Transform panel, so you'd have seen it. 

More probably related to resolution problem (different in Designer than when imported in Blender). 

Edited June 14 by Oufti
Addendum

[Hangman]

Hi @Paige,

I believe the issue you're seeing is because Affinity apps use 72 dpi and Blender uses 96 dpi (as do most apps). Take a look at this post and see whether the workaround resolves the issue...

Based on the size your objects are appearing at in Blender, it suggests your Affinity Document is set to or is exporting at 90 dpi, i.e.,

• ((800 / 1000) x 100) = 80%
• ((1599.7 / 2,000) x 100 = 80%

so ((72 / 90) x 100 = 80%