About Billable

Billable is a free invoice generator built for developers. It runs entirely in your browser: the invoice editor, the PDF output, the saved-invoice list, even the git log parser are all client-side code served as static files. There is no server processing your data, because there is no server at all beyond the one handing out the files.

That architecture is the pitch. Invoices contain some of the most sensitive information a freelancer has — client names, rates, income. The simplest way to protect that data is to never receive it. Your invoices live in your browser's localStorage and in whatever JSON exports you download. We couldn't read them if we wanted to.

Why it exists

Most free invoice tools are lead magnets for paid billing software: watermarks, forced signups, "your first three invoices are free." Developers sending a handful of invoices a month don't need a billing platform — they need a clean PDF and their hours itemized. Billable does that, plus one thing built specifically for how developers work: it turns your git log into line items, grouped by day, described by your actual commits.

Who's behind it

Billable is built and maintained by Mark Fulton, a solo entrepreneur and developer with 27 years of experience building, launching, and marketing products on the web. He built Billable because invoicing tools kept getting in the way of billing for actual work. It costs almost nothing to run, which is why it can stay free without a catch. If it saves you an afternoon of fiddling with a spreadsheet template, it's doing its job.

Questions or bug reports: Mark@Reinventing.AI. Start with the generator or the developer invoice template guide.