An iPhone backup looks like thousands of files with random 40-character names — deliberately unreadable. But everything is in there, and you don't need to restore it (and wipe your phone) or buy a $30–80 viewer to look inside. Our free viewer opens the backup's message database right in your browser: every iMessage and SMS, searchable by contact, keyword, or date, exportable to a timestamped PDF. The backup never leaves your computer.
Open your backup — free viewer →
~/Library/Application Support/MobileSync/Backup/
Or the friendly route: Finder → click your iPhone in the sidebar → Manage Backups… → right-click a backup → Show in Finder. Each backup is a folder named with a long string of letters and numbers; the date shows in Manage Backups.
%APPDATA%\Apple Computer\MobileSync\Backup\
For iTunes from the Microsoft Store: %USERPROFILE%\Apple\MobileSync\Backup\
Paste either into the File Explorer address bar and press Enter.
Why "in your browser" matters: a backup contains your entire message history. Upload-based viewers put all of it on someone else's server. This one reads the files locally — turn off Wi-Fi after the page loads and it keeps working.