# How to increase font size in function node editor (Victron Cerbo)

**URL:** <https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077>\
**Category:** General\
**Created:** [19 May 2026 11:52 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077 "2026-05-19T11:52:50Z")\
**Posts on this page:** 20\
**Page:** 2

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [1 June 2026 15:42 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/22 "2026-06-01T15:42:24Z")

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Node-red working again and I think I've found the cause of the upset and I will start a thread about it.

Still not able to increase font size though, I wonder if I copied and pasted the relevant parts of settings.js.old into user-settings.js would it work ?

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**Author:** ![TotallyInformation](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/totallyinformation/32/31_2.png) [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Post date:** [1 June 2026 15:57 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/23 "2026-06-01T15:57:55Z")

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> [@usernamepasswordBS](#):
>
> Still not able to increase font size though, I wonder if I copied and pasted the relevant parts of settings.js.old into user-settings.js would it work ?

You still need to share the startup log info so that we can check what settings are actually being used.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [1 June 2026 17:15 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/24 "2026-06-01T17:15:48Z")

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@400000006a1dbc0c2b08886c.s current  
@400000006a1dbce32efb2344.s lock  
@400000006a1dbda62ef483f4.s state

These aren't it, are they ?

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [1 June 2026 17:37 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/25 "2026-06-01T17:37:36Z")

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No, it will be obvious when you find it, saying things like Starting Node red and saying the node red version and where it is reading files from.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [1 June 2026 18:17 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/26 "2026-06-01T18:17:22Z")

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They were in /data/logs/node-red-venus. Dunno exactly where else to look.

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**Author:** ![TotallyInformation](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/totallyinformation/32/31_2.png) [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Post date:** [1 June 2026 18:29 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/27 "2026-06-01T18:29:44Z")

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Unfortunately, I think you need to reach out to Victron. I wonder if they've implemented Node-RED as an embedded version so I'm really not sure what is happening.

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**Author:** ![GogoVega](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gogovega/32/71313_2.png) [@GogoVega](https://discourse.nodered.org/u/GogoVega)\
**Post date:** [2 June 2026 08:08 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/28 "2026-06-02T08:08:03Z")

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![Capture d’écran 2026-06-02 à 10.07.33](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/5/456d6d9f270afc5cd0d99ecde21510b26c6dd40e.png)

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [2 June 2026 11:02 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/29 "2026-06-02T11:02:12Z")

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I've uncommented the fontsize line in each file that I can find although I don't have /data/home/nodered/.node-red/settings-venus.js

Does it need a restart to see if there has been a change ?

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [2 June 2026 11:13 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/30 "2026-06-02T11:13:52Z")

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Yes. Settings only get read at start up

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [2 June 2026 11:36 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/31 "2026-06-02T11:36:02Z")

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> [@usernamepasswordBS](#):
>
> I've uncommented the fontsize line

if that is the only line you have uncommented, you have probably broke things.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [2 June 2026 11:56 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/32 "2026-06-02T11:56:58Z")

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Oh...  
By the way, it says in (\*some of) those settings files that the editor is Monaco.

So I need to basically copy the settings that you posted above ?

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**Author:** ![mudwalker](https://avatars.discourse-cdn.com/v4/letter/m/47e85d/32.png) [@mudwalker](https://discourse.nodered.org/u/mudwalker)\
**Post date:** [3 June 2026 09:53 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/33 "2026-06-03T09:53:28Z")

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As and FYI...

I use VenusOS on an RPi, when I did run Node-RED under VenusOS, it was reasonably up to date, but I did find that it was too many versions behind for what I was doing.

I decided to run VenusOS on a RPi Zero 2 W and NR, along with Mosquitto, on a Wyse/Dell3040 under DietPi. The system runs very stable. When using Monaco, you can adjust text size of the Function Node in the Monaco Editor Pane by using two fingers and drag diagonally apart/together. In all other Nodes this just magnifies the whole browser screen.

Unfortunately our Motorhome is in Storage, and that is where the setup is, so I can't test ATM. I know this doesn't help you, but it is an example of what can be done.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [3 June 2026 11:38 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/34 "2026-06-03T11:38:55Z")

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I've found three different files that contain settings, one or two have Monaco as the editor, one or two have Ace. Trouble is I don't know which settings file is the "real" one.

I can only zoom the entire page when making the two-finger drag.

I don't want to go to too much trouble as it really is just to allow easier editing of the function node which is not something I do every day.

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**Author:** ![GogoVega](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gogovega/32/71313_2.png) [@GogoVega](https://discourse.nodered.org/u/GogoVega)\
**Post date:** [3 June 2026 12:52 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/35 "2026-06-03T12:52:02Z")

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You need to modify the third file (`/data/home/nodered/.node-red/settings-venus.js`).

The first file mainly contains the security configuration (for VRM). The second file isn't always present. If the third file doesn't exist, you can create it with your custom configuration. Even if the editor is defined in the first file, you can overwrite that configuration with the third file.

Can you share what you wrote in this third file?

The only annoying thing is that there's no log, or at least I couldn't find it. It's important to remember that the Cerbo has a weak point: its storage.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [3 June 2026 16:22 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/36 "2026-06-03T16:22:38Z")

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I thought I found the start-up log which is called "current" and have been trying to find a way to post it on here. Once I've got that capability under my belt I will post up the files but in my /data/home/nodered/.node-red/ I don't have settings-venus.js, only settings-user.js.

I think I may have seen settings-venus.js somewhere else though.

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 June 2026 16:48 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/37 "2026-06-03T16:48:11Z")

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Just paste the text output from the start of the most recent run. It should with something like Welcome to node-RED. Just paste the first 20 or so lines from the welcome message or just before.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [3 June 2026 18:01 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/38 "2026-06-03T18:01:33Z")

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Can't seem to copy from the ssh terminal.

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 June 2026 19:51 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/39 "2026-06-03T19:51:52Z")

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Ctrl Shift C to copy.

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**Author:** ![usernamepasswordBS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/usernamepasswordbs/32/81035_2.png) [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Post date:** [3 June 2026 20:33 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/40 "2026-06-03T20:33:27Z")

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Thanks for the instructions

Actually today it looks like a list of nodes whereas yesterday when I was having access problems it had more interesting information. It might have been a different log that I found yesterday.

I will look again tomorrow

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 June 2026 20:35 UTC](https://discourse.nodered.org/t/how-to-increase-font-size-in-function-node-editor-victron-cerbo/101077/41 "2026-06-03T20:35:59Z")

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Show us a bit of it.

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