Convert EnCase thumbnail files (TN3) online for free
The converter easily converts your TN3 thumbnails to various formats - free and online. No OpenText EnCase or other Raster Image software needed.
To convert other file formats to the "Forensic Thumbnail Cache" file type, you need software like OpenText EnCase or a similar tool.
The .tn3 file format is primarily used by OpenText EnCase as a thumbnail image. During digital forensic investigations, EnCase generates these files to store small visual previews of larger evidentiary files. Under the hood, these files usually contain standard JPG image data.
The major disadvantage of the .tn3 format is its proprietary association. Even though the internal data is a standard JPEG, standard operating systems and browsers will not recognize the .tn3 extension natively. Users are forced to rely on expensive forensic suites or obscure, outdated utilities like TN3 Viewer to open them. Relying on legacy software creates workflow bottlenecks when you just need to share a quick preview with legal teams or stakeholders.
To overcome these limits, converting the file is the most practical step. For immediate viewing or web use, convert .tn3 to JPG or PNG. If you need to include the thumbnail in a forensic report, convert it to PDF. Drop your file here to view and convert it securely right in your browser.
In rare cases, .tn3 files act as animated video thumbnails for VLC media player (using RIFF/WebP data) or as 3D machine control surfaces for Topcon Tools.
Use Convert.Guru to open and convert your TN3 file.
Users also converted TN, INFO, JPG, MP4, TNZ, TNT, PNG, TNS, ZIP, XML, AAE, PPK and EXE files.
If you want to convert TN3 file to MP4, OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D or STL, you can use OpenText EnCase or similar software from the "Forensic Thumbnail Image Preview" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to TN3, try OpenText EnCase or another comparable tool in the "Forensic Thumbnail Image Preview" 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 TN3 converter.