Fine work from Alex Oxlade Chamberlain saw the England international open the scoring before Chuba Akpom, Giroud, Podolski, Kristoffer Olsson and Thomas Eisfeld underlined the Gunners' dominance in the second half.
Arsene Wenger opted for a mixture of experience and youth for his first team selection of the 2013-14 season, with the likes of Mikel Arteta and Walcott playing alongside Serge Gnabry and Akpom in midfield and attack, respectively.
In a typically slow start to proceedings for a pre-season friendly, the Premier League side looked the more threatening, with Akpom, Kieran Gibbs and Aaron Ramsey all going close early on but all failing to test goalkeeper Kurnia Meiga.
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The visitors nearly doubled their lead moments later when Ramsey and Akpom combined to force a corner, before the midfielder nearly fortuitously found the back of the net via Indonesia defender Ruben Sanadi only for the ball to flash past the post.
Again Akpom went close just past the half-hour mark when Carl Jenkinson made tracks down the right flank and whipped in a fine cross towards the six-yard box that evaded the striker before Gibbs should have perhaps down better when hitting the side netting from 18 yards.
As the first half drew to a close, a slight misunderstanding between Ignasi Miquel and Lukasz Fabianski nearly saw the hosts equalise but the goalkeeper recovered his composure in time to deny Boaz Solossa.
With Wenger making five changes at the break, the already-tame pace of the game slowed further. However, Gnabry continued to shine and a quick break down the left flank saw him skip past a weak challenge and whip a low cross into the path of Akpom to double Arsenal's advantage after 53 minutes.
Podolski and Giroud were brought on with 20 minutes remaining in an attempt to liven up proceedings and it worked. Within two minute of his introduction, the Frenchman was fed inside the area by fellow second-half substitute Bacary Sagna to beat Meiga with the outside of his boot.
A further two minutes later, the two combined again as Giroud took his time to control the ball and flash a shot high into the roof of the net.
The goals just kept on coming as Tomas Rosicky combined neatly with Podolski for the latter to drill home from the edge of the area before the Czech's fine, hanging cross towards the back post saw Meiga clutching air and allowed Olsson to simply poke the ball into the back of the net.
And, to put a flattering look on the scoreline, Eisfeld pounced on Giroud's header down to hammer the ball off the inside of the bar for Arsenal's seventh.