Why good UX writing is the cheapest performance optimisation you can make

Most teams spend months redesigning their interface before they ever look at the words on those buttons, in those error messages, in those onboarding steps. That is the wrong order.

UX writing, the deliberate crafting of every piece of text a user interacts with, is one of the most underused forms of UX design for conversion. No extra development time. No new infrastructure. Just better words in the right place.

At Livewall, we see this constantly. Whether we are building web applications or complex digital platforms, the words shape behaviour. Not the button colour. Not the animation. The words.

Where things go wrong

The most common UX writing mistakes are also the most avoidable.

Vague button labels. "Click here", "Continue", and "Submit" tell the user nothing about what happens next. "Order your free sample" does. The difference in click-through can be substantial.

Technical error messages. "Error 403" or "Invalid form submission" means nothing to a user. "Your password needs at least 8 characters" gives them a concrete action. Users who understand what went wrong try again. Users who do not, leave.

Onboarding copy that explains the product instead of the value. "Create an account to access all features" is product-centric. "Save your results and pick up where you left off" is user-centric. That second version converts better. Consistently.

The three places where UX writing pays the most

1. Registration and sign-in flows. This is the first real interaction between user and product. Every unclear instruction or unnecessary step increases drop-off. When we built the AvroTros Eurovision Voting App, the onboarding copy was a deciding factor in how many of the 141,000 users who downloaded the app actually engaged with its full feature set. Clear, inviting language at each step made the difference.

2. Empty states and zero-data views. What do you show when a user has not done anything yet? "No results found" is a dead end. "No favourites saved yet. Add one to get started." gives direction. Empty states are opportunities, not afterthoughts.

3. Confirmation and success states. Users need to know something worked. "Saved" is neutral. "Your registration is confirmed. You will receive an email within 5 minutes." closes the loop and reduces anxiety. That second version also cuts down on support requests.

UX writing and conversion: what the data shows

The evidence is not hard to find. Microcopy tests regularly show conversion improvements of 20 to 40 percent based purely on word choice. That is not marginal. That is significant, and it requires no redesign.

The structural challenge is that in most product development processes, copy is added late, after the designs are locked. UX writers join too late, if they join at all. The result is a product where the interface and the words work against each other.

The fix is simple in principle and harder in practice: treat copy as a design decision. Write the words before you prototype. Test the copy with users the same way you test the flow.

How Livewall approaches this

In UX/UI design, we do not start writing copy after the designs are done. We write the core user flows in words before we draw a single frame. That sounds backwards. It works.

When we know what we need to say to the user in step three of the registration flow, we know how much space the interface needs to accommodate it. That prevents designs where copy gets awkwardly squeezed in later.

We also look at existing analytics as part of any digital strategy engagement. Where do users leave the flow? Those drop-off points are almost always places where copy is unclear, missing, or setting the wrong expectation.

The Sportvisunie community platform is a clear example. When we built that platform, the wording of the invitation text for new members was directly tied to activation rates. Specific, value-driven language outperformed generic welcome messaging by a meaningful margin.

Where to start

If you want to improve UX writing without a full redesign, start here.

1. Audit your primary flow. Write down every piece of text a user sees from landing to conversion. Read it out loud. Does it make sense at each step? Is every action clear?

2. Rewrite your error messages. Take every error state in your product and make them action-oriented. Each message should explain what went wrong and what the user should do next.

3. Test one piece of copy per week. A/B test your button labels, your headlines, your empty states. Small tests generate fast data.

This does not take months. It does not require a big budget. It requires attention. And it is one of the highest-return investments you can make in a digital product.