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Felix ZHU
@nicheaitool
Excel spreadsheet to web calculator with fixed price in 3 days
China
Inglês, Chinês
Sobre mim
I build small, fast web calculators and tools. Over the past year I have shipped 20+ browser-based calculators and 7 live websites: SaaS metrics, pricing, unit economics, fee calculators, and privacy-first PDF tools. Everything is plain HTML and JavaScript, no backend, no plugins, no monthly server bill.
If you have an Excel sheet that people need to use on a website, I turn it into a clean single-page calculator that runs in the browser, works on mobile, and can be embedded anywhere. Fixed price, fixed scope, usually delivered in 2-3 days.
Habilidades
Felix ZHU
offline •
Conheça meus serviços
Sites Personalizados
I will convert your excel calculator into an online web calculator
Sites Personalizados
I will build a loan and amortization calculator for your website
Experiência profissional
Founder / Builder
Niche • Autônomo
Jun 2025 - Present • 1 yr 5 mos
Founder / Builder NicheAITool - AI and SaaS tool review site 2025 - Present Built and maintain a review site for AI and SEO tools covering 60+ pages. Created 20+ free browser calculators for the site: MRR growth, LTV:CAC ratio, CAC payback, pricing, AI tool ROI, Shopify/Stripe fees. All calculators are static HTML + JavaScript deployed on Cloudflare Pages, calculating in the browser with no backend.
Founder / Builder
PrivacyCo • Freelance
Jun 2025 - Present • 1 yr 5 mos
Founder / Builder PrivacyPDF - browser-based PDF tools 2025 - Present Built five PDF tools that run entirely on the user's machine: merge, split, redact, PDF to JPG, and metadata removal. Built with PDF.js and pdf-lib, no upload, no server. Also shipped a Chrome extension and the surrounding site.
Founder / Builder
ARCADE • Freelance
Jun 2025 - Present • 1 yr 5 mos
Founder / Builder Tiny Arcade and Bite Arcade - browser game sites 2025 - Present Built and deployed two HTML5 game sites with 740+ game landing pages and 740+ embedded games, including sitemap architecture, redirect rules and performance work on Cloudflare Pages.
