iznkit: PDF invoices and documents
Make an invoice, quote, NDA or receipt as a PDF in about a minute, plus calculators for freelancers and online marketplace sellers.
What it is
iznkit is a set of about 60 small online tools in English and Russian, but the reason to open it is two things: document generators that output PDFs, and calculators for people who work for themselves. You can put together an invoice, a quote, a purchase order, a delivery note, a receipt, a timesheet, an NDA, an inspection report or a gift certificate and download the file straight away. This is one of our own projects.
Why we picked it
The invoice generator works the way you'd want: the form on one side, a live preview on the other, with subtotal, tax and total updating as you type. You can upload a logo, pick from twelve currencies and switch between six designs. The draft is kept in your browser rather than on a server, and there's no account to create.
Beyond invoices, there's a useful cluster for small sellers: margin and margin-with-VAT, break-even with a chart, ad ROI, an hourly rate worked back from an income goal, and unit economics, payout and pricing calculators for marketplace sellers. Results can be shared as a link that pre-fills the numbers. Several tools link to a short guide, so you can also learn what an invoice should include or when a mutual NDA makes more sense than a one-way one. Russian users get extras that Western tool sites skip, such as a VAT invoice in the official Russian format and a tax-regime comparison for marketplace sellers.
Where to start
- Build an invoice, pick a design and download the PDF.
- Try the quote generator for your next project estimate.
- Use the NDA generator, then read the guide on mutual versus one-way NDAs.
- Work out an hourly rate that actually hits your income target.
- Check the break-even calculator before launching a product.
Who it's for
Freelancers and small studios who need a tidy invoice once a month without accounting software. Small shop owners and online sellers who want quick numbers on margin and break-even. Developers will find a few handy extras too: an SQL formatter, JSON-to-TypeScript and Go types, and a cron expression explainer.
Quick answers
Is it free? Yes. Every tool is free right now, with no sign-up.
Where does my data go? Calculators run in your browser. Document generators send your form to the server only to build the PDF, and the site says it isn't stored.
Can I trust the tax numbers? Treat them as estimates. The site itself says they aren't tax advice and recommends checking with an accountant.
