Which MIME types are related to file extension ".drr"?
The .drr file extension is associated with 1 MIME types:
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .drr Files
DRR files are plain text files used as drill reports in PCB design. They are generated by Altium Designer and contain key information like drill hole sizes, positions, and other manufacturing details.
These files follow the MIME type text/plain, which means they can be opened by any standard text editor.
- Main Use: Report on drilling data for printed circuit boards.
- Software: Primarily created by Altium Designer. They can be viewed or edited with text editors like Notepad, Notepad++, or similar apps.
- Other Uses: They may also serve as documentation for manufacturing processes or quality control reviews.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
FAQs
What is a DRR file used for?
A DRR file is a Drill Report generated by PCB design software like Altium Designer. It provides a plain text summary of the drill bits, hole sizes, and quantities required to manufacture a printed circuit board.
How do I open a DRR file?
Because these are plain text files, you can open them with any text editor such as Microsoft Notepad, Apple TextEdit, or Notepad++. You can also view them directly within the Altium Designer environment alongside your PCB layout.
Can I convert a DRR file to Excel?
Yes, you can import the data into Microsoft Excel to analyze the drill list. Open Excel, go to the Data tab, select From Text/CSV, and choose your .drr file. You may need to adjust the delimiter settings to format the columns correctly.
What is the correct MIME type for DRR files?
DRR files generally utilize the standard text/plain MIME type because they contain human-readable ASCII text. This ensures they are recognized as text documents by most operating systems and web servers.
Is a DRR file required for PCB manufacturing?
While the NC Drill file (often .drl or .txt) is critical for the actual drilling machine, the .drr file serves as a verification report. Manufacturers use it to double-check that the tool list and hole counts match their setup before production begins.
Why can't I see the PCB layout in the DRR file?
The .drr extension is strictly a text-based report, not a graphical representation. To view the actual visual layout of the circuit board and drill holes, you need to open the associated Project or Gerber files in a viewer like Altium or a free Gerber viewer.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.