Free for end users. We earn from a paid developer API.
PDFWix is free for end users on the web app and earns revenue from a paid pay-as-you-go developer API for businesses that need to merge, compress, sign or convert PDFs programmatically at volume.
The marginal cost of running browser-side tools is near zero — your device does the work. The marginal cost of server-side tools is small. The developer API monetises businesses doing thousands of operations per day where free isn't an option (they need rate-limited, SLA-backed, billable usage). That revenue funds the free tier without us ever needing to add ads, watermarks, daily caps or signup walls.
We will never add watermarks to free output. We will never gate downloads behind signup. We will never sell or share your files. We will never train AI on your uploads. We will never run advertising on the web app. If we ever change any of these, we'll explain why on this page.
Correct — zero advertising on the web app. The page you're reading has no display ads and no affiliate trackers.
It currently does. If demand fell, we'd raise API prices before adding any friction to the free web app.
Because there's already a great free option — us — and because subscription friction kills the use case. PDFWix exists to be the tool you reach for at 11pm on a Sunday without thinking about your wallet.