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English
$
USD
I will build a custom web app in vanilla javascript
Jack D
About this gig
Are you looking for a lightning-fast, custom single-page web application or dynamic interactive tool built with clean code?
Skip the bloated website builders and heavy plugins. I build high-performance, responsive single-page web applications and interactive web tools using pure HTML5, CSS3, and Vanilla JavaScript.
Whether you need a custom ROI calculator, an interactive landing tool, an API-driven application, or dynamic web UI components, I deliver lightweight, secure, and fully responsive solutions tailored to your exact business needs.
What I Can Build For You:
- Custom Web Applications & Tools (Calculators, dynamic dashboards, interactive forms)
- Single-Page Applications (SPAs) with custom UI state management
- REST/JSON API Integrations (Live weather data, financial tools, dynamic feeds)
- Custom Interactive Forms & Web Widgets
- Clean Code Bug Fixing & Performance Optimization
- Responsive Layouts (Mobile, tablet, and desktop optimized)
Why Choose Vanilla JavaScript?
- Zero Dependency Bloat: Unmatched load speeds without heavy framework overhead or WordPress vulnerabilities.
- 100% Custom Control: Pixel-perfect designs built to your exact specifications.
- Seamless Deployment: Ready for inst
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Jack D
Jack D
Founder Lead Voice Artist Web Engineer
- FromUnited States
- Member sinceOct 2026
Languages
English
Professional voice narrator, audio engineer, and front-end web developer. Founder of Jack of All Voices, LLC. I specialize in broadcast-ready audiobook narration (ACX standards), commercial voiceover, and custom web application development tailored for independent authors, small businesses, and digital creators. Focused on clean audio production, pristine master quality, and responsive, functional web design.
FAQ
What do I need to provide before work begins?
Please provide a brief description of your desired feature or application, along with any design wireframes, reference sites, or specific API keys (if applicable).
Do you use frameworks like React or Vue for these apps?
I specialize in Vanilla JavaScript (pure JS) to deliver maximum speed, lightweight performance, and easy maintenance without framework bloat.
Can you host the web application for me?
Yes! I can help deploy your single-page app directly to fast static hosting platforms like Netlify, Vercel, or GitHub Pages as an add-on or standard service.
