React edits
226 USD 1) Images and Performance
Replace
<img>with an optimized component (for example,next/imageor a custom lazy-loader).Add
loading="lazy"anddecoding="async"for external images.Check large bundles: defer non-critical scripts (
dynamic import()/React.lazy).
Criterion: LCP ≤ 2.5 s on main pages; no errors with “Largest Contentful Paint image was lazily loaded”.
2) SEO Metadata
Add a single wrapper for meta tags (Head/Helmet or
next-seo):title,description,canonical, OG/Twitter.Auto-generate
canonicalbased on the current path.
Criterion: Key pages contain title, meta[name="description"], link[rel="canonical"] (valid and unique).
3) Accessibility (A11y)
Add
aria-labelfor interactive buttons/icons that do not have text.Fix contrast/focus styles (outline) for keyboard navigation.
Criterion: Lighthouse Accessibility check ≥ 90; key buttons accessible via keyboard.
4) Errors and Error Boundaries
Add Error Boundary around critical routes/widgets.
Single toast handler for showing API errors (remove
alert).
Criterion: On artificial error, the component does not “crash” the page; the message is understandable to the user.
5) Forms and Validation
Add client-side validation (for example,
zod/Yup+ React Hook Form).Disable multiple submits (disabled during
isSubmitting).
Criterion: Invalid data is not submitted; the user sees hints next to the fields.
6) Minimum Localization
Pull keys from i18n (for example,
react-i18next) for header/footer/CTA.Remove “hardcoded” text in 3–5 places.
Criterion: Language switch changes these texts without rebuild.
7) Minor Refactoring
Extract repeated buttons/cards into small components (
Button,Card).Remove unused imports, enable ESLint “recommended”.
Criterion: Lint without errors; reduced code duplication.
8) Frontend Security (Minimum)
Add
rel="noopener noreferrer"for external links.Mask tokens in the console; disable detailed stack traces in production.
Criterion: No warnings in the production build console regarding unsafe links.
Client's review of cooperation with Andrii Kolomiichuk
React editsI am very satisfied with the website improvements using React technology. The team quickly made changes, improved performance, and enhanced the user interface. The site runs smoothly and looks modern!
Freelancer's review of cooperation with Pasha It
React editsEverything is great, I recommend the client!
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7 days226 USD
7 days226 USD
Good day.
I have extensive experience in creating and managing websites.
I would be happy to collaborate.
I will do it efficiently and quickly.
Similar completed project: Виправити помилки на сайті
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15 days226 USD
655 2 0 15 days226 USD
We were just closing similar tasks during SEO and performance optimization on the Trellify project — it's a React + TypeScript SaaS application that we brought to Lighthouse 95+ without switching to Next.js.
Let's get access to the repository )
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4 days226 USD
2092 32 0 4 days226 USD
We will optimize the frontend in several areas:
we will speed up the loading of pages and images (so that key metrics in Google Lighthouse are in the green zone);
we will add basic SEO metadata for better indexing;
we will fix accessibility (so that the site works correctly with the keyboard and for screen readers);
we will handle errors in a user-friendly way;
…
we will update forms with validation;
we will add localization for key elements;
we will do a small refactor and basic security fixes.
Result: the site works faster, does not break down on errors, is ready for SEO, accessible to more users, and easier to maintain.
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3 days113 USD
6876 18 1 3 days113 USD
Hello. I am a front-end developer with 3.5+ years of experience. I have experience in optimizing applications on React/Next. Write to me.
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1 day23 USD
93540 1262 1 10 1 day23 USD
Hello. I have extensive experience with React. I am ready to collaborate. Feel free to reach out.
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2 days113 USD
217 2 days113 USD
Good evening. I will quickly and efficiently refactor your code in React because this is my specialization. I am adding my portfolio. Link to Google Drive:
Google Drive I suggest we communicate in private messages to discuss the details of our collaboration. Regarding my main technical skills: Frontend: HTML, CSS (Responsive/Adaptive Design), JavaScript, TypeScript, React, Redux, REST API, Android Studio Backend: Node.js, MongoDB and Tools: VSC, Trello, Vite, Git, Slack,
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