Extract text from THUMB files
To convert your THUMB file to another format, you need Android or other Raster Image software.
To convert other file formats to the "Cached Preview Image" file type, you need software like Android or a similar tool.
A .thumb file is primarily a cached preview image generated by the Android operating system to accelerate gallery browsing. These files allow your phone to display grids of photos instantly without loading the massive original files.
The Challenge: While effective for mobile performance, .thumb files are practically useless when transferred to a PC or Mac. They lack a standard file extension, meaning software like Adobe Photoshop or Microsoft Photos often refuses to recognize them. Furthermore, they are significantly lower resolution than the original photos, often leading to disappointment if users are attempting to recover lost high-quality images from these cache files. Users often find thousands of these consuming gigabytes of storage space without an easy way to view their contents.
The Solution: To make these files viewable or to recover the visual data inside, the best approach is converting them to standard JPG or PNG formats. This makes the image accessible on any device or web browser. For users organizing recovered thumbnails from jAlbum or older CAD software like Allplan, converting to PDF can help catalog these previews in a single document.
Convert.Guru analyzes your THUMB file, detects the exact format, and lets you read the text inside.
Users also converted DB, THUMB0, JPG, THUMB2, THUMB4, THUMB3, THUMB5, THUMB7, THUMB1, THUMB8, PREVIEW, THUMBS and JPG_THUMB files.
If you want to convert THUMB file to JPG, PDF, PNG, GIF, BMP, TIFF, TIF, WEBP, ICO, CUR, PSD or PSB, you can use Android or similar software from the "Image Thumbnail Cache" category. In the File menu, look for Save As… or Export….
To convert RAW, PNG, AI, NEF, PSB, DNG, SVG, GIF, EPS, JPG, ARW or PDF files to THUMB, try Android or another comparable tool in the "Image Thumbnail Cache" 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 THUMB converter.