Fix Next.js Performance Issues — Without Re-launching Your Site
Ship-ready Next.js, App Router or Pages
What you're seeing
App Router waterfalls, oversized RSC payloads, or pages that block on a slow server component.
Our approach
We trace every route's server + client cost, parallelise data-fetching, push expensive work to the edge or to cache, and prune the RSC payload to the bone.
Symptoms teams come to us with
- Hydration mismatches that only show up in production
- App Router data waterfalls and oversized RSC payloads
- Builds that pass locally but fail on Vercel or your runtime
- Routing, middleware or image config behaving unexpectedly
What we check first
- 01Server/client boundary leaks and non-deterministic SSR
- 02Serial data-fetching that should run in parallel or at the edge
- 03Version, type and cache issues in the build pipeline
- 04Misconfigured caching, ISR and revalidation strategy
What you get
Concrete deliverables, no fluff
Every engagement ends with measurable, documented outcomes — no black-box agency reports.
Root cause analysis with reproduction
Targeted fix with no scope creep
Verification on staging + production parity check
Runbook for future incidents
From brief to shipped fix
A transparent, low-risk process — a senior engineer reads your brief personally, and nothing starts until you approve a written plan and price.
Diagnose
A senior engineer reviews your brief, reproduces the issue, and pinpoints the real root cause — not the symptom — before any code is touched.
Scoped plan & quote
You get a written plan to fix Next.js Performance Issues, a firm timeline, and a fixed quote. Nothing starts until you approve it — no surprise invoices.
Ship the fix
We implement on a branch and open a pull request you review, working to your code-review standards on your repo — never a black box.
Verify & hand off
We verify on staging and production, share before/after evidence where it applies, and leave you a short hand-off note so the fix sticks.
Why teams hand this task to Krapton
Senior engineers only
Your brief is read and handled by a senior engineer — no junior hand-off, no sales-rep filter in between.
Root cause, not a patch
We reproduce and fix the underlying cause, then add a guard so the same class of issue does not quietly return.
Your repo, your standards
Every change lands as a pull request you review, on your repository, following your existing review process.
NDA on day one
Confidentiality and IP are covered before we look at a single line of code. All work stays in your accounts.
Fixed quote up front
You approve a written plan and price before work starts. If scope changes, we re-quote in writing — no surprise invoices.
Proof, where it applies
Performance, SEO and reliability work ships with before/after evidence so the result is measurable, not anecdotal.
Three ways to engage
No retainer required. Pick the model that matches the work — pricing for this task starts from $2,000, with a fixed quote before anything starts.
Per task
Most popularOne clearly-scoped fix at a fixed price. Best when you know exactly what is broken and want it handled end to end.
- Fixed quote up front
- One PR, reviewed by you
- No retainer required
Hourly
Pay only for the hours worked. Best for diagnostics, audits, or exploratory work where the scope is still emerging.
- Weekly timesheets
- Pay for what you use
- No minimum commitment
Per sprint
A focused 1–2 week sprint when the work is bigger than one fix but smaller than a full project.
- 1–2 week blocks
- Clear sprint goal
- Scale up or stop anytime
Tooling we use
Industry-standard stack, no proprietary lock-in
Fix Next.js Performance Issues — your questions, answered
How much does it cost to fix Next.js Performance Issues?
Pricing starts from $2,000 and depends on the scope we find during the diagnostic. You get a fixed, written quote before any work begins — most engagements like this run 1–3 weeks.
How long does it take to fix Next.js Performance Issues?
Typically 1–3 weeks for a focused engagement. After a short diagnostic we commit to a firm timeline so you know exactly what to expect.
Will you work directly on our existing codebase?
Yes. We work on your GitHub, GitLab or Bitbucket, ship every change as a pull request you review, and follow your code-review standards — not ours.
What exactly will I have at the end?
Concrete, documented outcomes — Root cause analysis with reproduction, Targeted fix with no scope creep, Verification on staging + production parity check, and more. No black-box agency report.
How quickly can you start, and do you sign an NDA?
For a focused task like this we can usually start within 24–48 hours of the brief. We sign an NDA on day one, before we look at any code — yours or ours.
Do you work with both the App Router and the Pages Router?
Both. We diagnose against whichever model you run today, fix the issue in place, and only suggest a migration if it is genuinely the cheapest path to a stable result.
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Let's get this off your plate
Send a 60-second brief on Fix Next.js Performance Issues and a senior engineer replies within 24 hours with a plan and a fixed quote. NDA on day one, no retainer required.