I need an app icon for fman which will for instance be displayed:
* in the Dock on Mac/the Taskbar on Windows
* in the app switcher when the user presses Alt+Tab
* in the Start Menu in Windows 7/10
* as a favicon in the browser.
The icon needs to look good in each of those places - and thus at resolutions ranging from 16x16 to 1024x1024px.
To get a feel for what fman looks like, please take a brief look at its home page, https://fman.io.
fman is modern, fast, slick, clean, beautiful and extensible. It would be good if your icon could also be described with some of these adjectives (eg. "modern" and "clean").
You could (but don't have to) include an icon of a file in your design (https://www.google.com/search?q=fil…n&tbm=isch). "fman" also sounds a little like "Superman". So you could also use a crest (https://www.google.com/search?q=crest&tbm=isch) in your design. Or draw/invent a superhero called "fman"? It's up to you ;-)
The key purpose of the icon is to be memorable. It would be awesome it if it were funny as well. When I think of "funny" and "superhero", I'm reminded of Deadpool from the like-named movie. (You don't have to know the movie; I'm just brainstorming to try to help you come up with ideas.)
Finally, here are some app icons that I like. I'm listing them to give you a feel for my taste. Some of them are very complex. Your design does not have to be as complex. It's more important to me that the icon also looks good in small sizes (eg. 16x16px, 32x32px).
*Update after receiving several proposals:*
I still haven't found "the one". Please continue submitting new ideas. Hints:
1) Try not to use the letter "f" in your design. I think there are much better ways of creating an association with fman - For instance by using an icon of a file. I'm not saying I will certainly dismiss any design containing an "f". But so far, I have told every such design to please replace it with something else.
2) Don't use a rounded square outline. Apple's Design Guidelines say such an outline should only be used for iOS apps: https://developer.apple.com/library…-CH87-SW11. fman is a desktop application, hence shouldn't use a rounded square.
3) Please don't use a magnifying glass as a key element of your icon. fman is more than just a file search tool.
4) Use the following rule to judge your design: Could this icon be used for other apps as well? If the answer is "yes", then it's probably not a good icon for fman. For instance: Some of the first proposals simply showed a stylised "f" with no further resemblance of even fman's colours. Such generic icons can be used for any app whose name starts with "f". They're not a good fit for fman.
5) Ideas I'd like to see more of:
* Other file managers use the dual-pane layout as the identifying element in their logo. For instance: http://mac.eltima.com/imgnew/produc…mander.png, http://osx-fastcommander.appspot.co…28x128.png, https://krusader.org/static/img/kru…r_logo.png. I'd be interested to see more proposals along these lines as well. Please do make sure however that your design clearly stands for fman, and not another file manager. You may use an "f" here.
* Older file managers often use a floppy disk in their logo (the best-known example is http://www.ghisler.com/images/top.logo.gif). Another more modern example is http://crax.soft4u2.com/img/icon_crax_64.png. I'm not a big fan of using a floppy disk - because fman is modern and floppy disks are from the previous century. But maybe it can inspire you, or you have an idea that relates to that floppy disk theme and makes it more modern?