# Don't make changes when compiling

**URL:** <https://wled.discourse.group/t/dont-make-changes-when-compiling/11340>\
**Category:** Issues\
**Created:** [March 13, 2024, 3:16pm UTC](https://wled.discourse.group/t/dont-make-changes-when-compiling/11340 "2024-03-13T15:16:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vyacheslav](https://avatars.discourse-cdn.com/v4/letter/v/b9e5f3/32.png) [@Vyacheslav](https://wled.discourse.group/u/Vyacheslav)\
**Post date:** [March 13, 2024, 3:16pm UTC](https://wled.discourse.group/t/dont-make-changes-when-compiling/11340/1 "2024-03-13T15:16:45Z")

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Hello! Help is needed. I decided to translate all the text and change the background. I downloaded the sources and made changes to the WLED-main\wled00\data files. (index.htm, index.css, settings.htm, etc.)  
Next, in the platformio.ini file, I removed the “;” for the board default\_envs = esp32dev.  
Then everything is compiled, the firmware is uploaded, but it is unchanged as by default. My changes are not applied((  
I am attaching screenshots, one of them shows the changed page.  
What could be the reason?

 ![2](https://global.discourse-cdn.com/free1/uploads/wled/original/2X/d/d01007a1298e17993d0bcfe46e577243376c399f.png)

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**Author:** ![kilrah](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/kilrah/32/5927_2.png) [@kilrah](https://wled.discourse.group/u/kilrah)\
**Post date:** [March 13, 2024, 4:22pm UTC](https://wled.discourse.group/t/dont-make-changes-when-compiling/11340/2 "2024-03-13T16:22:26Z")

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See the “Changing Web UI” section, need to build it separately

[https://kno.wled.ge/advanced/custom-features/](https://kno.wled.ge/advanced/custom-features/)