I started with the largest logos I could find (Tin Eye was a great image search tool for this), then used Photoshop to remove the compression artifacts and correct the colors. The Amex logo was impossible to fix, so I ended up recreating it in vector form in Illustrator, then applied the blue gradient in Photoshop.
Here is a ZIP archive containing all four high-res credit card logos. Enjoy. If you like them, link back to this page from your blog, Delicious, Digg, or wherever.
Update: After a tip in the comments, I compiled this set of vector credit card logos. I had to re-created the AmEx one myself, so it's not exactly right. But good enough until these companies get their act together and provide these assets on their own sites.
Nice job! I like your simplification of the Discover and Visa logos.
P.S. Your captcha doesn't work in Opera 9.5 on OS X.
Posted by: Arthur Klepchukov | September 26, 2008 at 12:36 PM
I can't take credit for the designs. Those are the updated logos for those brands. Check out http://visa.com and http://www.discovercard.com/
Posted by: Dave Cortright | September 26, 2008 at 12:41 PM
Thanks! Used the logos on a mass post mailing to our 2500 customers
Posted by: kyle | October 30, 2008 at 01:43 PM
I tend to grab vectors for any popular logos such as these from brandsoftheworld.com.
Nice job though.
Posted by: Pete | January 27, 2009 at 02:46 AM
I needed these logo's for a PowerPoint presentation, great stuff, thanks
Posted by: Skip | February 08, 2009 at 10:10 AM
Just another "thank you" from someone that is appriciative of your work! Great job! -William
Posted by: William | March 13, 2009 at 05:09 PM
Thanks! Thanks! Thanks!
Posted by: alex | June 03, 2009 at 12:13 PM
Brilliant - just what I was looking for! Many Thanks for hard work.
Posted by: Michelle Smythe | June 24, 2009 at 02:56 PM
THank you!
Posted by: Jackie | August 06, 2009 at 10:36 PM
Thank you. Thanks for sharing. Will share something on your behalf. Take care.
Posted by: Hector | August 14, 2009 at 08:59 AM
Just what I needed for our new brochures, thanks.
Posted by: Chris | October 12, 2009 at 02:15 PM
THANKS SO MUCH!
Posted by: Kiera | December 08, 2009 at 04:59 AM
Thanks! You'd think these companies would provide these, but no!! These are the best images I've seen- thank you!
Posted by: Jessica | January 27, 2010 at 09:55 AM
Thanks so much for putting these together. Helped me make a much more professional-looking sign.
Posted by: Joshua Cripps | March 11, 2010 at 05:20 PM
Vector CC logos? I must be dreaming. Thanks!
Posted by: fumble | March 31, 2010 at 08:47 AM
Thank you! Was doing a brochure and all I had were vector graphics from 2001! Did a quick image search and you came up at top. Thank you for putting these out there for us!
Posted by: Bob R | April 26, 2010 at 10:48 AM
Oh thanks i love you so much!
Posted by: Anonymous | May 05, 2010 at 01:41 PM
Thanks Dave! Will be using these with our new site design.
Posted by: Keeton | June 04, 2010 at 01:11 PM
Thank you so much. We are exhibiting a PTO / PTO school trade show next week and needed hi-res credit card logos for our signage. These are better than anything else available on the web (trust us...we looked). You have made the lives of the Midwest School Shows office staff a little less stressful this week. Thanks again!
Posted by: Brandy Linn & Midwest School Shows Staff | June 09, 2010 at 01:22 PM
Great work sir.
I assume since you recreated the Amex logo you have the typeface. I have been trying to find that damn font ages now but with no joy, please please please tell me it's name!!
I will pay you in internet karma :)
thanks tom
Posted by: tom | June 29, 2010 at 05:43 AM
As far as I know, there is no typeface for the AmEx logo. Generally logo type is hand drawn, or at least significantly tweaked from the font that it came from.
As for the logo I created, I used vectormagic.com to create an outline, then cleaned it up in Illustrator.
Posted by: Dave Cortright | June 29, 2010 at 08:16 AM
Thanks for this. I am sure the design community appreciates your work!
p.s., your contact form is not the most intuitive...
Posted by: Dominic | October 25, 2010 at 03:11 PM
Thanks for cleaning these up. They look excellent.
Posted by: Chris McCorkle | November 07, 2010 at 08:46 AM
These were life savers for me today - I needed good vector images of these logos urgently to make a sign. My merchant account people did not send me any decals or signs. Thank you very much!
Posted by: Nancy Troske | November 19, 2010 at 03:00 AM
I'd like to see your logos reduced to individual same-sized images to include GIF/JPEG as PNG isn't well supported yet. Also, your single PNG image example including the old logos only complicates the color palette. Otherwise, great work.
Posted by: Skews Me | December 18, 2010 at 12:49 PM