About OhMyPDF

OhMyPDF is a small collection of free, browser-based PDF tools. Every tool runs locally in your browser — your PDFs never leave your device. There is no signup, no usage limit, and no server-side processing of the files you drop in.

Who runs it

OhMyPDF is operated by an independent web developer based in South Korea. The site was built to scratch a personal itch: I kept switching between half a dozen single-purpose PDF utilities, all of which uploaded my files to a server I could not audit. I wanted one place with a clean UI, fast load, no upsells, and complete client-side processing.

How it's funded

The site shows ads served by Google AdSense. Ads are clearly labeled and never inserted in places that interfere with the tool itself. Revenue covers the domain registration, analytics, and a small amount of time spent maintaining the code.

Open about how it works

Each tool is implemented in plain JavaScript that you can inspect with your browser's developer tools. PDF editing uses the open-source pdf-lib library. PDF rendering (for the PDF→image converter and previews) uses pdfjs-dist, the same engine that powers the built-in PDF viewer in Firefox. Both libraries are loaded directly into the page — nothing is sent to a backend.

Contact

Questions, feedback, or bug reports: hello@ohmypdf.app.