What File Format Categories Does Open My Files Organize?

Updated

Open My Files organizes file formats into nine top-level categories shown on its homepage: Archive, DESKTOP, Audio Files, Data, Raster Image Files, Spreadsheet Files, Executable Files, Vector Image Files, and Video Files. Each category is a browsing entry that lists specific extensions, so you can narrow a search by format type before looking up an individual file extension.

The categories and the extensions listed under each

The homepage presents these as "Top File Format Categories," with a short set of example extensions under each heading. The table below reflects what the page shows.

Category Extensions listed on the page
Archive DESKTOP, IES, ISO, ZIP
Audio Files M4P, PCM, COPY, DSF, AU
Data ODP, XML
Raster Image Files ITHMB, DPX, MAC, EXR, SCP
Spreadsheet Files XLR, XLS, XLSB, XLSM, XLSX
Executable Files XLM, AHK, ACTION, JSF, SCRIPT
Vector Image Files POSTSCRIPT, DRAWING, IDEA, PUPPET, PFD
Video Files OGV, VID, H264, QT, 264

A few entries are worth reading carefully rather than assuming from the label:

  • Archive mixes container formats (ZIP, ISO) with items like DESKTOP and IES, so the grouping is the site's own arrangement, not a strict technical taxonomy.
  • Spreadsheet Files is the most conventional list, covering the Excel family from XLS through XLSX, XLSM, XLSB, and XLR.
  • Video Files lists codec-style names (H264, 264) alongside container-style ones (OGV, QT), which matters if you are trying to tell a codec from a file wrapper.
  • Executable Files includes script-related extensions (AHK, SCRIPT, ACTION, JSF) rather than only compiled binaries.

How to use the categories to find a format

The categories work as a filter, not a search result. A practical sequence:

  1. Decide which category your extension most likely belongs to (for example, an .xlsx file under Spreadsheet Files).
  2. Open that category to see whether your extension appears in its list.
  3. If it does, follow the entry to the format's information page.
  4. If it does not appear, check a neighboring category — the site's groupings are broad, so a file you would call "data" may sit under Archive or Spreadsheet Files instead.

The expected result is a format-specific page describing that extension. The common sticking point is assuming the category names match strict technical definitions; treat them as navigation labels and verify the extension itself.

What the categories do not tell you

The homepage listing is a directory index, not a complete inventory. Only a handful of extensions are shown per category, and the page does not state how many formats each category holds in total. It also gives no indication of pricing, account requirements, or download access for any format page — none of that is stated on the homepage, so do not assume a lookup is unrestricted until you try it. For a single extension, the category view is the fastest route; for comparing formats across types, you will need to open the individual pages.