Click the "Select File" button above, and choose your STOREDATA-SHM file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert STOREDATA-SHM to another file type
To convert your STOREDATA-SHM file to another format, you need Apple Core Data or other Database software.
Convert a file to STOREDATA-SHM
To convert other file formats to the "Temporary Index File" file type, you need software like Apple Core Data or a similar tool.
About STOREDATA-SHM files
The .storedata-shm file is an auxiliary Shared Memory file generated by SQLite databases, specifically those managed by the Apple Core Data framework. You will typically find this file alongside a main .storedata file (the actual database) and a .storedata-wal file (Write-Ahead Log) in macOS or iOS backup directories. Its primary purpose is to serve as an index for the WAL file, allowing multiple processes to access the database contents simultaneously without locking issues.
A common source of frustration is that this file acts as a "ghost" component; users often discover it while trying to recover lost Notes, Contacts, or Messages and attempt to open it directly. However, the .storedata-shm file does not contain your actual photos, text, or contacts - it only contains memory map data used by the system to read the database efficiently. Because it relies entirely on the parent database, opening it in a text editor yields illegible binary noise. To access or convert the data you are looking for, you must locate the corresponding .storedata file. Once the main file is located, you can use DB Browser for SQLite to export the tables to CSV or SQL formats for use in Microsoft Excel or other database managers.
Convert.Guru analyzes your STOREDATA-SHM file, detects the exact format, and lets you read the text inside.
If you want to convert STOREDATA-SHM file to , you can use Apple Core Data or similar software from the "SQLite Shared Memory Index" category. In the File menu, look for Save As… or Export….
To convert files to STOREDATA-SHM, try Apple Core Data or another comparable tool in the "SQLite Shared Memory Index" category.
The STOREDATA-SHM Converter Story
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 STOREDATA-SHM converter.