Extract text from iOS photo thumbnails (ITHMB)
To convert ITHMB thumbnails to another format, you need Apple iOS or other Raster Image software.
To convert other file formats to the "Thumbnail Cache Container" file type, you need software like Apple iOS or a similar tool.
The .ITHMB file format is a proprietary cache container created by Apple iOS devices. It stores low-resolution thumbnails of images synced via iTunes or managed in legacy applications like iPhoto and Aperture. The system uses this cache to rapidly display photo grids without using CPU power to decompress full-sized images.
The format is highly restrictive and heavily fragmented. It is not a standard image file; it operates more like a raw database of uncompressed pixel data (often 16-bit RGB565 or YUV). Standard operating systems like Windows and macOS cannot natively open .ITHMB files outside the Apple ecosystem. Extracting images traditionally requires expensive recovery software or complex command-line utilities. Furthermore, these files frequently consume massive amounts of disk space and cause storage bloat over time.
Converting .ITHMB is critical if you need to recover lost photos from an old iPod backup or view Apple thumbnails on a PC. For web use and standard sharing, convert the extracted images to JPG. If you want to preserve the exact raw pixel data without adding compression artifacts, convert to PNG. Just drag and drop your file here to analyze and convert it securely right in your browser on convert.guru.
Convert.Guru analyzes your ITHMB file, detects the exact format, and lets you read the text inside.
Users also converted PHOTO DATABASE, F00, APPLE TV PHOTO DATABASE, JPG, IPOD PHOTO CACHE, THUMB, _PHOTO DATABASE, THMB, THUMBS, ITHMB 2, ZIP, PNG and TSX files.
If you want to convert ITHMB file to JPG, JPEG, PDF, PNG, GIF, BMP, TIFF, TIF, WEBP, ICO, CUR or PSD, you can use Apple iOS or similar software from the "Photo 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 ITHMB, try Apple iOS or another comparable tool in the "Photo 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 ITHMB converter.