When comparing Font Awesome vs Symfony, the Slant community recommends Font Awesome for most people. In the question“What are the best web design tools?” Font Awesome is ranked 6th while Symfony is ranked 15th. The most important reason people chose Font Awesome is:
Font Awesome 5.1 offers 1264 free and 2068 payed icons.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro 3332 icons to choose from
Font Awesome 5.1 offers 1264 free and 2068 payed icons.
Pro Large variety of icons
There is a wide range of web-related icons to choose from. Categories include web-application, directional, transportation and brand icons. See the full list of icons here.
Pro Easy to use
Pro MIT licence for the code
Pro Font Aweseome 5 is here with over 929 icons and counting
The Pro version is very reasonable and gives you access to 2316 icons and counting. Across 3 weights! Very Nice!
Pro Screen reader compatible
Other font icons have been known to have issues with this.
Pro Designed to be used with Bootstrap
Font Awesome can be used with any framework, however it's especially easy to use with Bootstrap.
Pro Continuously updated
Pro Can employ tree shaking to not bundle unused icons
Pro IE7 support with older versions
IE7 support has been removed from Font Awesome 4.4.0. However you can still use an older version for IE7 support.
Pro Customizable icons through stacking
Icons in Font Awesome can be restyled by stacking different borders and background to modify their meaning. For example, any icon can be turned into a bullet point by stacking it on a circle, or converted into its negative by stacking a red cancel icon on top of it.
Pro Open Source
Symfony is open source and released under the MIT license.
Pro Easy debugging with a built-in debug toolbar
Symfony comes with a built-in toolbar that helps developers debug their applications during the development phase.
The toolbar is also extendable and new components, called panels can be added if needed to help with the debugging process.
Pro Great plugin ecosystem
One of the greatest strengths of Symfony is it's amazing and large plugin ecosystem, which comes as a result of it's large and dedicated community. Having a large number of plugins means less development time and more productivity.

Pro Highly active community
Symfony has one of the most active communities out of all the PHP frameworks. This is shown by the high number of commits made every day in the GitHub repo.
Pro Teaches you good practices
Symfony makes you be a better programmer. You have to deal with the latest object-oriented design patterns such as service-oriented architecture, dependency injection, interface abstraction, and so on.
Pro Uses YAML/XML/PHP/Annotation
Symfony makes use of XML, YAML or PHP annotations to create configurations in order to tell Doctrine on how properties of a certain class should be.
Pro Powerful event system
Symfony has a powerful built-in event system that allows you to add flexibility to applications and makes it easier to maintain the codebase down the road.
Pro Great templating engine
Uses Twig, which is a simple and easy to learn templating language that can also be used as a standalone engine, outside the framework.
Pro Uses Doctrine ORM
Symfony makes use of the Doctrine ORM to add an abstraction layer over the database in order to maintain flexibility without having unnecessary code duplication.
Cons
Con Too expensive
The icons I need are in the pay plan.
Con You will never use all icons
This means you'll have a lot of useless data (unused icons) being load into your application.
Con Font Awesome slows webpages
Con Settings
Too many configurations.
Con Very hard to install
Setting it up on webhost without a console is difficult.
Con Promotes bad development practices
Such as annotations via comments.
Con Doctrine ORM
Symfony Standard Edition, which is the most widely used distribution, comes integrated with Doctrine, the most resource hogging ORM library.
Con You need a lot of files to display a single page
For a simple hello world page you need about 5 files.
