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LukasB , 04-24-2026, 04:48 AM

Maybe someone find method not to generate these files:
projectname.LDP
projectname.DRR
Status Report.txt
In Altiumo project folder. I usually just deleting it and go forward.

, 04-24-2026, 04:53 AM

🤖 In the meantime, here’s a response from the [FEDEVEL AI HW Assistant]().
It helps to find relevant resources for your question, but it may make mistakes as it’s still in early development.

This is the response from the AI Assistant:
These files are temporary outputs generated during Altium's design rule checks and manufacturing file generation. While they can't be completely prevented from being created during normal operations, there are strategies to manage them:

1. **LDP Files** (Layer Pair Definitions):
These are generated during via/hole-related operations. They're temporary working files that Altium recreates as needed. Safe to delete, but will reappear during via editing.

2. **DRR Files** (Design Rule Reports):
Generated automatically during Design Rule Checks (DRC). To minimize their creation:
- Avoid using "Run Design Rule Check" from the Tools menu unnecessarily
- Use targeted rule checks (Right-click > Design Rule Check) for specific areas instead of full-board checks
- [Video reference showing DRC process](https://www.youtube.com/watch?v=PqFtSpAXB9Q&t=4293)

3. **Status Report.txt**:
This log file is created during output generation. To reduce its impact:
- Use Output Job Files for manufacturing outputs instead of one-off exports
- Keep all output generation within a single session when possible
- [Output Job configuration example](https://www.youtube.com/watch?v=W21dORx5ceI&t=14)

**Pro Tip:** Create a post-processing script (Python/Powershell) that automatically deletes these files after each Altium session. Many engineers combine this with version control ignore rules (`.gitignore`) to keep repositories clean:

```
*.LDP
*.DRR
Status Report.txt
```

These files are regenerated as needed by Altium and don't contain critical project data.

, 04-24-2026, 04:53 AM

Regular deletion is safe and common practice - they're essentially temporary working files rather than essential project artifacts.

You can continue chatting with the AI Assistant here:
https://fedevel.com/hw-assistant

Robert Feranec , 04-24-2026, 04:56 AM

I am just curious, why/when do you need to delete them?

LukasB , 04-24-2026, 05:14 AM

@Robert Feranec thanks for question. I worked in several companies and that was always problem. Firstly we want projects clarity. We don't want to generate files which are useless and don't transfer any info for manufacturer. We want to store only files that were several times checked and fully prepared for manufacturing. These files sometimes raises questions why there they are, it is a error and etc. Massive production nuances. When you check file by file some Gerber viewers saying what there is a file with unknown format and once again it raises questions why. And all there problems solving could be done by not generating these files.

LukasB , 04-24-2026, 05:15 AM

There is the same question in fedevel forum website, and in Altium forum website but I can't find answers it is somehow possible.

LukasB , 04-24-2026, 05:21 AM

When we used the 17 Altium version in the past there were a lot of useless files, in Gerber folder, in NC drill folder, status report. Now in 26 version only three useless files left.

LukasB , 04-24-2026, 05:23 AM

I don't know or maybe don't understand why Altium doesn't include checkpoints do you want these files for generation or not.

Robert Feranec , 04-24-2026, 06:59 AM

you are right, when preparing the final manufacturing files I often delete unneeded files manually and only leave the files that are really needed. But it is one time process, so I never really thought about that too much

LukasB , 04-24-2026, 07:24 AM

A lot of companies reaching that: for files generating you need only one push action and all files, folders, dates, aasembly variants, should be named correctly and by company policy. It could be automated process original from Altium but for full solution you need scripts what execute deletion.

QDrives , 04-24-2026, 01:14 PM

Why are you use the old NC drill and Gerber X1 output?
None of these files are generated using the newer Gerber X2.

QDrives , 04-24-2026, 01:15 PM

No you do not.
This can all be done in JobFiles and project releaser.

LukasB , 04-27-2026, 05:10 AM

Not all manufacturers supply X2 Gerber's. So you need to generate NC drill files. These trash files are generated in the output folder and in the NC drill folder. Thanks for updates any more trash files in Gerber's folder in older versions there was also some trash in there. So all what I mentioned before can be done by an output job but not these trash files you always need to delete it.

QDrives , 04-27-2026, 01:16 PM

1) You do not need to delete them.
2) Gerber X2 is backwards compatible to Gerber X1.
3) If your manufacturer cannot handle Gerber X2, you should find a new supplier.
4) You complained about the file generation.