Invoice Kit — The One-File Invoice Generator
Invoicing tools have gotten ridiculous.You send maybe a handful of invoices a month, and somehow that requires an account, a monthly fee, an onboarding flow, and a dashboard full of features you'll never touch.Invoice Kit is the opposite of that. It's one self-contained HTML file. You open it in the browser you already have, click on any text to edit it, and your line items, tax, and totals calculate automatically. Hit Export and save a clean, professional PDF. That's the whole product — and that's the point.Designed like it matters. I'm a senior product designer with 10+ years of experience (Activision Blizzard, GoodRx, MedImpact white-label products), and I built this for my own consulting practice because everything else was either ugly or overkill. This is the actual tool I bill my clients with — now cleaned up, themed, and documented so you can make it yours in about a minute.What it does: Click-to-edit everything — business info, client details, project description, line items, notes, payment terms Automatic calculations — quantities × rates, editable tax percentage, live totals 4 designed themes — Ember (warm editorial), Foundry (cool + engineered), Ledger (classic serif on cream), Carbon (stark black & white). One click to switch. Your logo, embedded — upload any image; it's baked into the file and survives PDF export Multi-currency — USD, EUR, GBP, CAD, AUD, JPY with proper formatting Print-perfect PDF export — one button, your browser's print dialog, done Add/remove line items — as many as the job needs Works offline — it's a file on your computer, not a service that can shut down What it doesn't do: track you, email you, expire, or charge you again. There is no account. There is no cloud. If you can open a webpage, you can send an invoice.Make it fully yours. Every color and font lives in a clearly labeled block at the top of the file. Copy a theme, rename it, change five variables — now it matches your brand. No build tools, no dependencies, no config. The README walks you through it.Who it's for: freelancers, consultants, designers, developers, studios of one — anyone who bills clients and refuses to pay $19/month for the privilege.What you get: invoice.html — the generator (this is the product; it never expires) README.md — 60-second quick start + theming guide LICENSE.txt — simple license: unlimited invoices, personal & commercial use Free updates — improvements are delivered through your Gumroad library automatically One purchase. Unlimited invoices. Forever.
Get it → brianb0.gumroad.com