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Mock and Match
Fake test data & JSON tools, 100% in your browser
Mock and Match is a free, 100% client-side toolkit for developers: generate realistic fake test data (CPF, CNPJ, UUIDs, emails, credit cards and 50+ field types) with a visual schema builder, export to JSON/CSV/SQL, and convert between JSON, YAML, XML, TypeScript, Zod, JSON Schema and TOON — plus a JSON formatter/minifier. No signup, no data ever leaves your browser.
Hey hunters 👋
I built Mock and Match because every time I needed realistic-but-fake data to test a form (a valid-looking CPF, a working UUID, a fake-but-formatted credit card), I ended up either hand-writing fixtures or fighting some clunky tool that wanted my email or an account first.
So it's: a schema builder for mock/test data (CPF/CNPJ with real check-digit validation, credit cards, emails, dates, 50+ field types), plus a JSON ↔ TypeScript/Zod/YAML/XML converter and a JSON formatter — all running 100% in your browser, nothing ever touches a server.
Free, no signup. Would love your feedback — especially which field types or conversions you'd want next.
About Mock and Match on Product Hunt
“Fake test data & JSON tools, 100% in your browser”
Mock and Match was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #152 on the daily leaderboard. Mock and Match is a free, 100% client-side toolkit for developers: generate realistic fake test data (CPF, CNPJ, UUIDs, emails, credit cards and 50+ field types) with a visual schema builder, export to JSON/CSV/SQL, and convert between JSON, YAML, XML, TypeScript, Zod, JSON Schema and TOON — plus a JSON formatter/minifier. No signup, no data ever leaves your browser.
On the analytics side, Mock and Match competes within Web App, API and Developer Tools — topics that collectively have 743.1k followers on Product Hunt. The dashboard above tracks how Mock and Match performed against the three products that launched closest to it on the same day.
Who hunted Mock and Match?
Mock and Match was hunted by alan lima. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Mock and Match including community comment highlights and product details, visit the product overview.
alan lima