Here are two chips. As a test. Still a mistake

@rumvit Hello

Thank you for sharing your work.
About the 2D viewer that we provide for our customers to show the assembly service, please to note that this feature is in a continuous improvement and we are trying our best to make it much more better in order to better serve our customers needs.
This service is not always a reference on how it will look the final PCB assembly, so just make sure that your files (GERBER, BOM, Pick & Place) are OK than we will assemble your PCB as you designed it :)
You can use any external DFM analyzer to check your design.

Thank you for your post.

Hi Support, what external DFM analyzer do you recommend for this?
I'm asking because I had a very similar problem and my PCBA got rejected because of this...

thanks

@terjekbela Hello ;

We don't recommend a specific DFM analyzer, from my personal experience I worked with OrCAD DFM checker for my PCB designs and it is easy to use and good software as well.

@JLCPCBsupport,

"OrCAD DFM checker for my PCB designs and it is easy to use and good software as well."

True but that is a paid-for tool which is only available as an option as part of a high-priced EDA toolsuite. There is a free time limited demo version of this tool available but it is not clear that it can be used for PCB files other than those generated by Orcad itself.

At the moment the in-house JLCPCB 2D viewer seems to be of so little use to our customers that we should either fix it or take it down.

This issue needs to be resolved because this is the last link in the chain and we should not be expecting our customers to send their designs out for DFM checks using other vendor's tools which may be using that vendor's own built-in Design Rules and not the Design Rules that our customers have set up in EasyEDA.

• There are several online DFM resources but please make absolutely sure that the Design Rules that they are checking your design against are yours and not theirs!

A quick search for "free online DFM tool" turns up:

There's a couple of free DFM Handbooks available from here:
https://www.tempoautomation.com/dfm-for-hsd-printed-circuit-boards-ebook/ (Needs sign-up)
https://pages.protoexpress.com/rs/727-TSC-367/images/DFM%20Handbook_Revision%202.pdf

Free no-sign-up DFM checker:
https://www.seeedstudio.com/blog/2016/03/30/fusion-breaking-news-online-dfm-review-available-now/
https://www.my4pcb.com/net35/FreeDFMNet/FreeDFMHome.aspx#_ga=2.52747560.1466764463.1596549068-2124471208.1596549068

"free" with sign-up online DFM checkers here:
https://www.protoexpress.com/pcb/dfm-for-pcb/
https://www.pcbcart.com/assembly-capability/free-dfm-check.html

@andyfierman The 2D viewer is not that much bad to turn it off, new features always have some gap,
For the JLCPCB assembly there is one simple rule which is the zero orientation of the PCB library should match the component orientation in the packaging tape reel, for our customers they can check the results in our DFM analyzer in the order history after placing them order and this will show up if there is any assembly errors in the files.