Footnote.com has about 1% of the War of 1812 pension application files digitized and available at its website. That's about 1400 images out of a total of about 7.2 million...but it's a start. And if one of your ancestors is included in the early release, it doesn't matter how low the percentage is.
Even better, the collection is available for free
Check it out at http://www.footnote.com
Recall that you get a significant price reduction to an annual subscription to Footnote.com if you are a PGS member. Go to the PGS Members-only website for details.