An SDLTPL file is a template created by SDL Trados Studio, a program used by businesses to edit, review, and manage translation projects. It contains one or more files added by a user intended to be translated to a different language or reviewed by another user. SDLTPL files are used for creating multiple projects with the same settings.

SDLTPL file open in SDL Trados Studio 2017 SDLTPL files may contain a variety of files, such as .DOC, .DOCX, or .XML files, needed to be translated and reviewed. The templates also store project settings that include the description of the project, the due date of the project, users who can access it, and the source and target language to complete the translation. You can open an SDLTPL template by selecting File → New → New Project and choosing "Create a project based on a project template". You can create an SDLTPL template by selecting File → Save and choose the SDLTPL template format.