How to open .OTC files on Linux
To open .OTC files on Linux, install an OpenDocument-compatible office suite from your distribution’s repositories.
Step-by-step instructions
- Install an OpenDocument-compatible office suite from your distribution’s repositories.
- In your file manager, right-click the .otc file → Open With → select the office suite; if needed, set it as the default for application/vnd.oasis.opendocument.chart-template (your desktop may use shared-mime-info for this).
Common issues
“Windows can’t open this file” / no app is associated
Your system doesn’t have an OpenDocument-compatible office suite installed, or the .otc association is missing.
- Install an office suite with OpenDocument (ODF) support.
- Use “Open with…” to select that suite and set it as the default for .otc files.
The file opens, but appears blank or not as expected
An .otc is a chart template, not a finished chart document—some apps may only apply it when creating/editing a chart.
- Try opening it from within the office suite’s chart workflow (for example, when selecting a chart template).
- If your suite has limited template support, test with another OpenDocument-compatible suite/version.
File type looks wrong on Linux (opens in the wrong app)
Your desktop’s MIME database or file association may not be updated, so the .otc extension isn’t mapped correctly.
- Update your desktop’s MIME database and file associations (shared-mime-info is commonly used for this on Linux).
- Manually set the default application for application/vnd.oasis.opendocument.chart-template to your office suite.
Still can’t open your .OTC file?
Recover a deleted or lost .OTC file
If the file was deleted by mistake or the drive was formatted, data recovery software may be able to get it back. Stop writing to that drive right away, because new data can overwrite what you want to recover.
Windows software that recovers deleted or lost files from PCs and external drives such as HDDs, SSDs, USB drives and memory cards, after deletion, formatting or a crash.
Wondershare RecoveritWindows and Mac software that recovers deleted or lost files from computers and external drives such as HDDs, SSDs, USB drives and SD cards.
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Security note
.otc is an OpenDocument package type; treat it like any complex document format—only open files you trust because malformed documents can exploit parser bugs in document software.