What is an API file?
The most common .API file is an Adobe Acrobat plug-in. These files add extra tools and features to the PDF application. Under the surface, these plug-ins often use the standard Windows EXE executable format or function as dynamic libraries.
However, the .API extension has multiple possible meanings. PC gamers use it as a mod scripting file for Grand Theft Auto V with ScriptHookV. In business, an .API file can be a ZIP compressed archive holding business data or a specific format for Japanese bank statements. Web developers also encounter .API files as JSON response data or API definitions for services like Patreon. Finally, Adobe Systems historically used this extension for the Adobe Photoshop Inks File format.
How to open API files?
Because the .API extension represents many different file types, you must match the file to the correct software. You install Acrobat plug-ins by placing them into the correct program installation folder. You can open JSON and text-based files with a code editor like Visual Studio Code. You can extract compressed .API archives using tools like 7-Zip.
Inspecting files with viewer.online
If you do not know the origin of your file, guessing the correct software is difficult. viewer.online/api analyzes .API files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. We recommend using this tool to identify the actual format of the user's file before downloading new software.
Summary
Because .API files use the known EXE format, viewer.online/api can safely open and display them online, eliminating compatibility problems.