About us

Simple products for everyday jobs online.

Tinkzy is a small web product company. We build focused online products that help people get everyday tasks done, for free.

What we make

SellerReceipt: Free invoice and receipt maker with PDF download. Visit sellerreceipt.com
TagCalc: Seller fee and profit calculators for Etsy, eBay, Vinted and five more selling apps. Visit tagcalc.com
Freelance Tax Kit: Free 2026 US tax calculators for freelancers, 1099 contractors and the self-employed. Visit freelancetaxkit.com
PDF Text Editor: Edit the text in a PDF right in your browser. (coming soon)
Website Status Checker: See in seconds if a site is down for everyone or just you. (coming soon)

Useful beats busy. Each product does one job and does it well.

Free should mean free. No paywalls and no sign-up walls. Some of our sites show ads, which is how we keep them free.

Your data is yours. Where possible, our products work right in your browser.