Case file
Perth Mosque
Wikipedia's first sentence called it “oldest mosque in perth”. Today it says “oldest mosque in perth and the second oldest purpose-built mosque in australia”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2020
Perth Mosque , located in Perth , Western Australia is the oldest mosque in Perth. The mosque was designed and built between 1905 and 1906. The mosque was founded by Hassan Musa Khan , who was also its treasurer in 1906. Fatteh Mohammad Dean, an immigrant from Punjab was among the first trustees.1 " "The Oldest Mosque in Perth" - Review of Perth Mosque, Perth, Australia" . National Archives of Australia .2
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 954787022.
Today
Wikipedia's first sentence called it “oldest mosque in perth”. Today it says “oldest mosque in perth and the second oldest purpose-built mosque in australia”. Read the current article and compare.
| 2015 | 2020 | Oct '23 | 2025 |
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What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2015, and today's defining sentence is their current revision.
Then
oldest mosque in perth
Now
oldest mosque in perth and the second oldest purpose-built mosque in australia
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.