"Slow" can mean a dozen different things — a blank screen for two seconds, content that jumps around as it loads, a page that looks ready but isn't interactive yet. We measure the specific metric that's actually failing, find the real cause behind it, and fix that, rather than applying generic speed tips that may not touch your actual bottleneck.
1:1 Frontend Performance Support · Fixed-Price & Hourly Options · Fast Turnaround
This Is For You If...
You're a founder and your site feels slow, but you're not sure what's actually causing it
Your team's Lighthouse score keeps flagging issues you don't know how to fix
You're a student or freelancer whose project looks fine locally but is sluggish once deployed
Your Core Web Vitals are hurting your search rankings and you need them fixed properly
You've tried a few quick fixes and the site still doesn't feel fast
Self-Diagnostic Checklist
Ask Yourself | What It Suggests |
Is the page slow to start showing anything, or slow to become usable? | Points to whether this is a loading/paint issue or an interactivity issue |
Have you run a Lighthouse or PageSpeed Insights report? | Tells us whether we're starting from scratch or building on existing diagnostic data |
Is it slow on all pages, or specific ones? | Scoped slowness usually points to a specific asset or component; site-wide slowness points to something shared (fonts, scripts, bundle) |
Is it slow on desktop, mobile, or both? | Mobile-specific slowness often points to different causes (network, device CPU) than desktop |
Does content jump around as the page loads? | Points specifically to a layout shift issue, distinct from raw load speed |
Have you checked how many third-party scripts are loading? | Third-party scripts are a very common, often overlooked source of slowdown |
Page Load & Frontend Performance Issues We Fix
Fix Slow Page Load Times
The most general complaint: your website is loading slow, and you need to fix slow page load or just understand why your site is slow. We start by measuring exactly where the time is going before making any changes aimed at improving page speed.
Improve Core Web Vitals / Lighthouse Score
If you need to improve Core Web Vitals, fix your Lighthouse score, or boost your PageSpeed Insights score — including the specific LCP, FID/INP, and CLS metrics — we address the actual metrics that are failing rather than making changes that don't move the score.
Fix Render-Blocking Resources (CSS/JS)
When you need to eliminate render-blocking resources, fix render-blocking CSS, or resolve a render-blocking JavaScript warning, we identify exactly which assets are delaying the page from rendering and restructure how they load.
Reduce JavaScript Bundle Size
A reduce bundle size request, a JavaScript bundle too large warning, or the need to minimize your JS bundle size usually means unnecessary code is being shipped to every visitor. We identify what's actually bloating the bundle and remove or defer it.
Fix Slow First Contentful Paint (FCP)
If you need to improve First Contentful Paint, you have a slow FCP, or want to fix your time to first paint, we identify what's delaying the browser from rendering anything at all, which is often the first thing a user actually notices.
Optimize Images for Web Performance
To optimize images for faster loading, compress images for web, or fix a large image slowing down the site, we implement proper sizing, format, and compression strategies — often one of the highest-impact, most overlooked fixes.
Fix Largest Contentful Paint (LCP) Issues
To fix your LCP score, improve Largest Contentful Paint, or resolve LCP being too slow, we identify the specific largest visible element and what's delaying it — often an image, a font, or a render-blocking resource above it.
Fix Cumulative Layout Shift (CLS) Issues
To fix layout shift, reduce your CLS score, or stop page content from jumping as it loads, we identify exactly which elements are shifting and reserve proper space for them before they load.
Implement Lazy Loading (Images/Components)
A lazy load images setup, the need to implement lazy loading in React or another framework, or the goal to defer offscreen images, means loading only what's actually visible first and deferring the rest. We implement this correctly, without breaking layout or perceived performance.
Fix Slow Time to Interactive (TTI)
To improve Time to Interactive, fix a page that's not interactive fast enough, or fix your TTI score, we identify what's blocking the main thread from responding to user input, even after the page visually appears ready.
Implement Code Splitting
A code splitting setup, the need to split your bundle by route, or a dynamic import performance fix means loading only the JavaScript each page actually needs instead of one large bundle upfront. We implement route- or component-level splitting appropriate to your framework.
Fix Web Font Loading Performance Issues
Slow font loading, a font blocking render, or the need to optimize web font delivery means your custom fonts are delaying the page or causing visible text flashes. We implement proper font-loading strategies to avoid both.
Minify & Compress CSS/JS/HTML Assets
To minify JavaScript and CSS, compress assets for performance, or set up gzip/brotli compression, we ensure your build pipeline and server are actually delivering optimized, compressed assets rather than raw, oversized files.
Set Up CDN for Static Assets
If you need to set up a CDN for your website, want to serve assets from a CDN, or have a CDN that isn't actually speeding up the site, we implement or fix the CDN configuration so static assets are genuinely served from edge locations close to your users.
Fix Mobile Page Speed Issues
A slow site on mobile, the need for mobile page speed fixes, or general mobile performance optimization requires testing and optimizing for real mobile conditions — slower CPUs and networks than most development machines. We test and fix under realistic mobile constraints.
Reduce Number of HTTP Requests
To reduce HTTP requests on your website, address too many network requests slowing the site, or handle request bundling optimization, we consolidate and restructure how assets are loaded to cut unnecessary round trips.
Fix Unused CSS/JavaScript Bloat
To remove unused CSS, implement tree shaking for unused JavaScript, or generally reduce unused code in the bundle, we identify dead code your users are downloading but never using and eliminate it.
Optimize Web Fonts / Icon Fonts Loading
Beyond render-blocking, to optimize icon fonts, reduce font file size, or subset fonts to only the characters actually used, we shrink font payloads specifically, which is often overlooked compared to image or JS optimization.
Fix Server Response Time (TTFB) Issues
A slow Time to First Byte, high TTFB, or the need to improve server response time from the frontend's perspective means the delay is happening before the browser even starts receiving content. We identify whether this is a backend, hosting, or CDN configuration issue.
Implement Preloading / Prefetching Strategies
To preload critical resources, set up prefetch links, or use resource hints effectively, we implement the right preloading/prefetching strategy for your specific critical assets and navigation patterns, rather than guessing at hints.
Fix Third-Party Script Performance Impact
When third-party scripts are slowing the site, an analytics script has a performance impact, or you need to reduce third-party JS load time, we identify exactly which external scripts are costing you and implement deferred or optimized loading strategies for them.
Frontend Performance Audit
For a broader website speed audit, a frontend performance review, or a full page speed optimization audit, rather than fixing one specific issue, this is a proactive review across your key pages to catch performance issues before they cost you conversions or rankings.
Don't see your exact issue listed above? Send it to us anyway — most frontend performance problems follow recognizable patterns.
What We Need From You
What to Share | Why It Helps |
A link to the page(s) in question | Lets us measure the actual performance directly rather than working from a description |
Any existing Lighthouse/PageSpeed Insights report | Saves us from re-measuring what you already know |
Whether the issue is worse on mobile, desktop, or both | Helps scope the diagnostic approach correctly from the start |
Your frontend framework/stack | Optimization techniques differ meaningfully between React, Vue, plain HTML, and others |
Whether this is affecting SEO/rankings, conversions, or just general feel | Helps us prioritize which metrics matter most for your specific goals |
Access to the codebase, if changes are needed beyond configuration | Lets us implement fixes directly rather than just advising |
Common Mistakes to Avoid
Instinct | Why It Doesn't Help | Do This Instead |
Compressing images without addressing render-blocking resources first | Misses often-larger wins from resources actively blocking the page from rendering | Address render-blocking CSS/JS before or alongside image optimization |
Adding lazy loading to every image, including ones above the fold | Can actually hurt LCP by delaying the very content that should load first | Lazy-load only offscreen content; prioritize loading for what's immediately visible |
Chasing a perfect Lighthouse score without checking real user metrics | Lab scores don't always reflect real-world user experience across different devices and networks | Balance lab scores (Lighthouse) with real user monitoring data where available |
Adding a CDN without fixing what's actually slow | A CDN speeds up asset delivery but doesn't fix render-blocking resources, bloated bundles, or inefficient code | Fix the underlying performance issues; use a CDN to complement, not replace, that work |
Minifying assets but leaving unused code in the bundle | Minification shrinks what's there but doesn't remove code that shouldn't be shipped at all | Remove unused code first, then minify what remains |
Testing performance only on a fast office/home connection | Doesn't reflect what most real users, especially mobile users, actually experience | Test under throttled network and CPU conditions, not just your dev environment |
How It Works
Step | What Happens |
1. Share the page and context | Send the URL, any existing performance reports, and what "slow" means for you specifically |
2. We measure the real bottleneck | We run performance audits and identify exactly which metric and resource is actually causing the issue |
3. We fix the real cause, not just the symptom | The fix targets the actual bottleneck — render-blocking resources, bundle size, images, fonts, or third-party scripts — and is verified with before/after measurements |
4. We explain what was slow and why | You get a plain-English rundown of what the bottleneck was and what changed |
5. We advise on what to monitor going forward | If ongoing content or feature additions could reintroduce the issue, we tell you what to watch |
Why Codersarts
Frontend performance problems are deceptive — a slow-feeling page can have several different underlying causes, and fixing the wrong one wastes time without moving the needle. We measure against the actual metrics (LCP, CLS, TTI, FCP, TTFB) rather than guessing, and we've optimized bundles, images, fonts, third-party scripts, and rendering strategies across React, Vue, and traditional stacks. Whether you need one specific metric fixed or a full audit, we find where the time is actually going.
Turnaround Time
Most single-issue fixes — render-blocking resources, image optimization, lazy loading, bundle splitting — are diagnosed and resolved within a day once we have access to the page and codebase. A full frontend performance audit is scoped with a clear timeline based on how many pages and areas need review.
FAQ
Question | Answer |
Do you need access to our codebase, or just the live URL? | For a diagnosis, the live URL is often enough. For implementing fixes, we'll need codebase access. |
Will fixing performance require major changes to our site? | Not usually. Most performance issues are fixable with targeted changes — we'll tell you clearly if something bigger is genuinely needed. |
Do you work with our specific frontend framework? | Very likely. We work across React, Vue, Next.js, and traditional HTML/CSS/JS stacks. |
Can you help specifically with Core Web Vitals for SEO purposes? | Yes — Core Web Vitals optimization for search ranking purposes is one of the most common reasons people reach out. |
Is this confidential if it's for a work project? | Yes. We don't contact your employer or client, and an NDA is available on request. |
What if performance regresses again after new features are added? | We can flag what to monitor, and ongoing performance support is available if you want regular review as you ship new features. |
Related Services
API & Backend Response Time
Caching Issues
Asset & Media Optimization
Third-Party Script & Integration Performance
Site Feeling Slow Right Now?
Don't guess at fixes. Send us the page and let's find out exactly what's slowing it down.
Get Help With Your Page Speed →