Atanar Technologies >> Skills >> Front End Optimization

Front End Optimization


    Our CDN/Front End Optimization Audit


We offer an audit with two complementary parts:

  • The CDN chapter looks at how to best take advantage of a CDN in your environment

  • The FEO (Front End Optimization) chapter takes a broader view at the performance mix, optimizing users’ perceived performance across the whole stack


Indeed, on average, 80% of the end-user response time is spent on the frontend, after the server has generated the html page itself. At the same time, web users’ have become increasingly impatients, and a few tenth of a second can have measurable impacts on conversion rates, page views…


First, the CDN audit includes:

  • A structural web site analysis (organization, domains, URL forms, resources…)

  • If there is an existing CDN, assess it’s actual results (cache hit & miss…)

  • Look at resources that will be optimized by default through the CDN, or those that will need a rule engine to do so

  • Recommend server side configurations (origin TTL…) so that you could take advantage of a multi-CDN configuration (Cedexis…)

  • If useful, we can advise on CDN choice depending on our analysis and your additional needs (origin protection, network acceleration…)


Second, the FEO audit focuses on identify actionable improvements – the subject remains complex and we know there is no miracle cure.


We will be looking at some “quick-wins”, depending on your technical architecture:

  • Making better use of browser caches (HTTP headers…)

  • Optimized resource loading: CSS, JS, favicon…

  • Page weight reduction: gzip, image encoding, fonts…

  • DCO (Dynamic Content Optimization) opportunity


We will also be looking at some more structuring issues, like:

  • Increase cachability (e.g. using Ajax requests)

  • Accommodate third-party scripts from a end-user point of view (Facebook, beacons, tracking…)

  • Protect origin and increase throughput with a proxy-cache (Varnish…)

  • Better resource management (perfect caching, managing versions…)

  • Javascript performance tuning

  • Limit redirects

  • HTML complexity


If useful, we can help your team choosing methodologies for assessing and improving back-end performances.