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Is there a limit to shapes or conditional formatting rules on a diagram in Lucidchart?

Forum|Forum|7 months ago
January 8, 2026
17 replies
206 views

Hello and Happy New Year.

I wanted to ask if there is a file size limit or a limit to the number of shapes on a diagram? Or if there is a limit to the number of “conditional formatting” rules I can have?

I am building a software landscape - it has less “shapes” on than previous diagrams but it does have 185 conditional formatting rules. It has become very slow. I even had to move over to Chrome as I’ve read the product was designed to be used on Chrome. But it is still very very very slow. .Moving the mouse does not move the diagram view and it takes about 30 seconds to catch up. If I paste a shape from another diagram (edge) I get “page unresponsive”. Every change I make takes about 30 seconds or more to respond.

Google Chrome only has 1 tab open and that is the diagram, and in Task Manager is is using 1.7Gb of Memory.

Other diagrams that do not have conditional formatting and double the shapes interact a lot quicker.

It’s become unusable so wanted to ask if there is a limit or a solution to this.

Thanks for your help in advance.

Best answer by Michelle S

Hi @MarkTerrington,

I apologize for the miscommunication on my end. Another alternative to reducing the size of your document is by making a copy of the document.

If that does not solve the issue, here are some additional troubleshooting steps that can help improve performance:

You mentioned in one of your first responses that an incognito window helped. This means that this issue is likely caused by cookie or browser extension interference. Can you please try clearing your cache and cookies in a regular browsing session and try again? If the issue persists, I recommend disabling your extensions one by one until you determine which extension is causing the issue.
Are you connected to a VPN that could be causing this issue?

I’m happy to take a look at the document again, however it looks like the document support PIN you provided has expired. Could you please generate a new one? Additionally, can you confirm if any of your other teammates are running into this performance issue?

Show previous replies

M

MarkTerringtonAuthor

Hi @Michelle S

Just referring to my reply from 10 days ago :

“Sadly splitting the document is not an option being that it is a “landscape” of all business applications - plus I’ve not had such an issue before so it certainly seems to be linked to the rules. “

I’ve also sent a copy the errors from the browser console. Not sure why you mentioned you could not replicate the problem when I have the same problem in Firefox, Chrome and Chrome Incognito, and via 2 different networks.

Not sure why your last reply was marked as the “best answer” - I’ve removed that as it sadly did not help.

Thank you.

M

Michelle SAnswer

Lucid & airfocus support team

Hi @MarkTerrington,

I apologize for the miscommunication on my end. Another alternative to reducing the size of your document is by making a copy of the document.

If that does not solve the issue, here are some additional troubleshooting steps that can help improve performance:

You mentioned in one of your first responses that an incognito window helped. This means that this issue is likely caused by cookie or browser extension interference. Can you please try clearing your cache and cookies in a regular browsing session and try again? If the issue persists, I recommend disabling your extensions one by one until you determine which extension is causing the issue.
Are you connected to a VPN that could be causing this issue?

I’m happy to take a look at the document again, however it looks like the document support PIN you provided has expired. Could you please generate a new one? Additionally, can you confirm if any of your other teammates are running into this performance issue?

M

MarkTerringtonAuthor

Morning @Michelle S

Thanks again for your reply.

The analysis I did on the error was only in Chrome Incognito - where the delay response time was incremental. So I do not think it is any extensions.

I am not connected to a VPN and have used both the corporate network and a Fibre connection from my home. My reply from 9 days ago that provided the PIN also mentioned the outcome from tests.

I will try and generate another but I have a lot of work to catch up.

Thanks,

Mark

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MarkTerringtonAuthor

Hello again @Michelle S

I also have an issue of some of the hover text icons will display the text and others will not. Even though they use the same conditions, e.g., if text contains …

Is there a reason that some of the hover texts will not work?

Thanks again.

Mark

M

Michelle S

Lucid & airfocus support team

Hi @MarkTerrington,

Thanks for your response! I can take a closer look at the issue with your hover text icons with your document support PIN. Please send that PIN whenever you get the chance. Thank you!

M

MarkTerringtonAuthor

As mentioned even in an Incognito browser I was having issues, and had to restart the incognito browser multiple times.

I will leave this thread as I do not feel there is a “best answer”.

Thanks for trying.

M

Michelle S

Lucid & airfocus support team

Hi @MarkTerrington,

Thanks for letting us know, we are marking answers as “best” to improve searchability and the experience in the Community. Even though the thread was marked with a “best answer”, I am still happy to help until we can find a solution. If these issues persist, please send a document support PIN and a screen-recording so I can better understand the issue you are experiencing.

Thank you!

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