Convert OpenDocument HTML templates (OTH) online for free
The converter easily converts your OTH templates to various formats - free and online. No LibreOffice or or other Web software needed.
To convert other file formats to the "HTML Template" file type, you need software like LibreOffice or a similar tool.
The .OTH file extension usually represents an OpenDocument HTML Template, a standardized format used by open-source suites like LibreOffice to create formatted HTML documents. While based on the ZIP-compressed XML architecture of standard OpenDocument files, .OTH files are specifically designed to store layout styles and formatting for web pages rather than standard printed documents. A common problem for users is that despite being "HTML templates," they cannot be opened directly in web browsers like Chrome or Firefox; they require a compatible word processor to instantiate the template first. Users often need to convert these to standard HTML for web publishing, or PDF for easier sharing.
Alternatively, an .OTH file may be an Origin Graph Theme, used by OriginLab Origin (data analysis and graphing software). These files store proprietary graph settings, colors, and formatting rules to ensure consistency across scientific visualizations. Since Origin is specialized, paid software, users without a license cannot view or apply these themes. In this scenario, converting the internal XML data to TXT allows users to inspect the parameter values, though replicating the graph visualization requires the original software.
Use Convert.Guru to open and convert your OTH file.
Users also converted OTF, ODI and ODS# files.
If you want to convert OTH file to CSS, JS, PHP, ASP, ASPX, JSP, JSPX, PY, RB or PL, you can use LibreOffice or similar software from the "Web Document Template" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to OTH, try LibreOffice or another comparable tool in the "Web Document Template" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our OTH converter.