Several apps like the EaseUS MobiSaver can be used to extract the conversations out of Whatsap Sqlite message databases used on iOS devices. The conversions are saved as HTML files, each conversation in its own file.
Found 2 different conversion types using the same filename extensions.
Conversion sqlite to html type 1:
Convert from SQLite database to HyperText Markup Language web page.
Multiplatform software - convert sqlite to html on any platform
SQLiteStudio is cross-platform SQLite database manager with intuitive interface. It is able to export SQLite databases to various formats (SQL statements, CSV, HTML, XML, PDF, JSON).
File type (from-> to)
Convert from sqlite file
to html file
HyperText Markup Language web page
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned sqlite to html. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Conversion sqlite to html type 2:
Convert from WhatsApp Messenger for iPhone message database to HyperText Markup Language web page.
Microsoft Windows software - convert sqlite to html on Windows
MobiSaver is recovery tool that enables users to recover data from iPhone, iPad, iPod Touch, or recover data from iOS backups created by iTunes.
MobiSaver is able to recover text messages, call history, calendar as well as photos and videos.
Whatsapp Xtract is utility for Microsoft Windows operating system used to extract messages from WhatsApp message database and visualize them as HTML document that can be opened in your Web browser.
Apple macOS / Mac OS X software - convert sqlite to html on OS X
EaseUS MobiSaver for Mac is easy to use Mac iPhone data recovery software designed to recover photos and videos, contacts, SMS, call logs, memos, WhatsApp messages etc.