PDFKing is a free, browser-based PDF toolkit that lets anyone merge, split, compress, convert, sign and edit PDFs — no sign-up, no daily limits, and no watermarks on the output. PDFKing (pdfking.app) is a lifetime-free online document toolkit built around everyday PDF work. It offers tools across four areas — organise & optimise (merge, split, compress, rotate, extract pages), convert to and from PDF (Word, HTML, JPG, text), secure/sign/edit (watermark, e-sign, redact, password-protect), and page-level editing (crop, page numbers, annotations, metadata). Everything runs in the browser with no installation or account required, no premium tier or usage caps, and no watermarks or branding added to files. Its audience is students, freelancers, consultants, small-business owners and admin teams.