Analyze file format online
Latest database update (March 10, 2021): Added support for AVIF (AV1 Image File Format) format.
1. Click "Choose File" button to select a file on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox.
2. Click "Analyze Now!" button to start analyzing. The analysis results will be listed in the "Analysis Results" section.
Not sure what format your file is? Just upload it and let our server analyze the file's binary signatures to identify what exactly format your file is.
The analysis results will show all possible file formats. For example: If you submit a DOCX file, the analysis results will identify the file both DOCX format and ZIP format. This is because DOCX documents are stored in Open Packaging Convention (OPC) packages, which are ZIP files containing XML and other data files. A DOCX file can be renamed to ZIP file and opened by WinZIP software.