Over a weekend day, with Cursor, I went from zero to a tool site that can serve users across regions—the same scope would probably have taken me about a week if I had hand-written configs, dug through docs, and trial-and-errored the old way.
What shipped this time is a “financial freedom calculator”: users enter monthly spending, expected investment return, inflation, and similar inputs; the tool runs a common simplified model in the visitor’s browser (e.g. along “safe withdrawal rate” lines) to estimate roughly how much capital you might need before passive income could cover living expenses. Output is for personal planning only and is not investment advice.
Technically, it’s a pure front-end tool: the core math runs on the device, you ship static assets, and you don’t need your own backend first. This post is not a play-by-play and doesn’t list every command—you can ask an AI anytime and get a checklist for your registrar and host. Below I break the real order into five steps, then notes on using Cursor, and a short wrap-up.
For me, the biggest win wasn’t just “another calculator”—it was walking the full path of building, shipping, and iterating an internationalized site end to end; the next idea can reuse the same sequence, rules, and Cursor workflow and waste less time re-learning domains, i18n, and SEO from scratch.
At the end, follow the “read original” link to open the live site—feedback welcome.
End-to-end: from domain to live, in five steps
Step 1: Domain
You need an address people can remember. (This can overlap with core product work in step 2, but don’t leave it too late: the earlier you lock the canonical domain, the less rework on meta, sitemap, and webmaster tools.) For a personal site, don’t overthink the registrar: keeping DNS at Cloudflare (register or transfer) is usually enough—DNS, HTTPS certs, and Cloudflare Pages deploys sit in one console, docs are in one place, and resolution is friendly globally.
Exact steps depend on your situation (existing domain or not, apex vs subdomain); I won’t spell them out here. Describe your case in Cursor or another AI and ask for a checklist against current official docs.
Costs to expect: ongoing spend is mostly annual domain renewal; common TLDs are often on the order of tens of RMB per year (varies by TLD and promos; exotic ones can cost more). For a static site with modest traffic, Cloudflare Pages’ free tier is usually enough—no need to stress about server rent on day one. If you already use Cursor, count that as part of your everyday tooling budget.
Step 2: Core product
First make the tool actually work: inputs, compute or transform, results, basic styling and usability. If the business allows logic to live entirely in the browser with no first-party API, you get:
- Simple deploys: build output is static files, great for global CDN hosting.
- Privacy and trust: user data doesn’t have to touch your server—good for calculators and converters.
- Smoother AI collaboration: clear front/back boundary keeps the conversation focused.
There’s no single “right” stack—prefer well-documented, large-community combos so both you and the AI can find examples fast. Don’t over-architect on day one, or i18n and SEO refactors will touch too many files later.
Step 3: Internationalization by design
“Global” isn’t translating a few strings. At minimum think about: UI language, reading direction (e.g. RTL for Arabic), locale-aware numbers and currency, shareable URLs that reflect language, and the cross-language page relationships SEO needs. If you only say “add Chinese,” an AI often edits one string and stores up pain. Safer to treat i18n as a system up front:
- Single source of truth: one config lists supported languages, display names, and direction (LTR / RTL); add a language by updating the list first, then routes and assets—avoid hardcoding in pages.
- Internal locale keys vs URL segments can differ: e.g. regional codes in code vs lowercase hyphenated paths; keep an explicit mapping and generate all in-app links through one code path—no ad-hoc string building or guessing. Don’t infer language from “first segment of a locale tag” alone—you’ll mis-classify regional variants.
- Copy and long content: parallel key structures across languages so missing translations surface early. Long-form “single source” can be one file plus a build step or script to split per locale.
- Formatting and layout: format numbers, money, and dates with runtime locale APIs; pick sensible regions per language. RTL needs layout-level direction, not only translated sentences while the UI still reads LTR.
Step 4: SEO by design
“Being found” is part of globalization too: fast everywhere (static + edge + HTTPS) and clear structure for crawlers.
Aim for at least: machine-readable rules files, sitemaps, canonical host and redirects, and cross-links between language versions (so engines don’t treat them as duplicate or orphaned pages). For big changes, run a production build locally first—don’t discover failures only in prod.
If an AI generates head tags or sitemaps, specify in the brief: when touching multilingual markup, verify every locale in one pass—otherwise you’ll miss updates and rework in loops.
Step 5: Iterate and ship quickly with Cursor
Once the skeleton for product, i18n, and SEO is in place, most work is small steps: copy tweaks, interaction polish, edge cases. Connect the repo to your host (e.g. Cloudflare Pages + Git) and close the loop with automatic builds and deploys; locally, confirm builds pass before push to avoid broken commits.
Wiring, env vars, and commands differ by platform—still fine to delegate step lists to an AI for your repo and target. What you must own: release rhythm and branching (when to merge, what counts as shippable). The AI helps with execution, not release decisions.
Using Cursor: pitfalls and practices
1. Put non-negotiables in project rules
Models default to “smallest change that completes the task,” which for multilingual sites often means only one language or one file. Maintain Cursor-readable rules (e.g. .cursor/rules): supported languages, URL prefix rules, whether new copy must land in all locales in the same change, whether raw paths are forbidden in internal links, whether sitemap / hreflang edits must touch every locale together, how page lang relates to URL segments, etc. Rules don’t replace product thinking—they block sloppy omissions.
2. Write short specs in the chat
Context, what to change, what not to touch, how to verify—bullet points. The clearer the target, the better the output fits your architecture.
3. Leave human-readable breadcrumbs for important decisions
Short release notes or design notes help you—or Cursor—pick up context months later without re-explaining from zero.
4. Don’t “feel-test” alone
Manually walk core flows in each live language; spot-check RTL layout; check console and network are clean. On top of that, use AI to grow or maintain automated tests and run critical paths before release—manual and automated complement each other.
5. Turn your dev loop into a Cursor workflow
Don’t rely only on ad-hoc chats: define a repeatable “one round of work”—e.g. assistant reads project rules (i18n, URLs, SEO) → same brief template for scope and guardrails → optionally plan before code → finish with a shared checklist (all locales, local build green). Put gates in .cursor/rules; keep stock phrases in team docs or Cursor custom commands. Production can still use CI/CD from Git; Cursor shapes how each human–AI round runs—stack both for stability.
Closing
A global-ready tool site from zero in a day works because Cursor speeds implementation and doc lookup, and because order matters: domain → core product → i18n → SEO → ship and iterate, plus rules + clear briefs + checklists to counter the model’s “minimal diff” habit.
Using this financial freedom calculator as the example, the same sequence and constraints apply to other small tools; the point is to treat internationalization and discoverability as infrastructure peers to the product, not last-minute patches.
One line for “what I actually got”: a reusable method, not a single page. With this flow, when you switch topics or build another static tool for multi-region users, you can treat the five steps and Cursor-side conventions as a template and spend energy on product and domain logic instead.
Try it
The financial freedom calculator is live—use the link below.