You’re only as good as your last piece of work (unless you’re still harping on about some logo you changed the colour of ten years ago).
Case studies are incredibly valuable (even the ones that are a little past their sell-by date). You can write all the hyperbole about yourselves you want (and I’ll challenge every last claim just for fun) but if you show me a case study with results and testimonials, well… I’m going to accept everything as legit and an honest insight into your abilities (and if it all turns out to be lies I will hunt you down).
In the top ten “Biggest Red Flags” of a recent Semrush report, “Lack of testimonials and case studies” scored high on the list of company turn-offs, proving the point that someone else’s review of your work will always trump your own self-promotion.
When we check out potential new clients, we scroll straight past anything vaguely “About us”-shaped, instead looking for factual case studies (or at least a portfolio).
When we advise clients on the creation of case studies, many seem reluctant due to a lack of ‘real results’ to report. Seriously, don’t worry about that - a simple testimonial is worth its weight in gold if you can’t conjure up a “300% increase in sales”.
Oh, and if you ARE lucky enough to have a “300% increase in sales”, PLEASE drop that into the case study early and LARGE. It might seem a little grotesque, but showing potential customers a solid commercial outcome your work led to is always a good idea.