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| 1996–2000 | 2000–2011 | 2011–2014 | 2014–2015 | 2015–present |
1996–2000[]
Alternate version
2000–2011[]
2011–present[]
2011–2014[]
Symbol (2011–present)
2014–2015 (primary), 2015-present (secondary)[]
2015–present[]
With wordmark
25th anniversary logo (2021)
Alternate icon celebrating 1 trillion pages archived on the Wayback Machine