MostlyPDF – open any PDF in free PDF tools

Right-click any PDF to merge, compress, split, rotate or convert it in MostlyPDF's free web tools. One click, no tracking.

Open any PDF in MostlyPDF's free online tools with one click. Right-click a link to a PDF, or open the toolbar button on any tab that's showing one, and choose a tool: merge, compress, split, rotate, remove or reorder pages, add page numbers or a watermark, protect or unlock, sign, or convert to Word or JPG. The tool opens in Chrome's side panel, right next to the page you're reading, with your PDF already loaded, so there's no downloading and re-uploading. Switch tools in the panel and your PDF comes along. Want more room? One click moves it into a full tab. Small on purpose: • about 40 KB, four permissions, and access to one site (mostlypdf.com) • no analytics, no tracking, and no data collected by the extension • your PDF goes only to the MostlyPDF page you picked The tools themselves are free with no sign-up and no watermark. Many run entirely in your browser. Some, like Word conversion and signing, need a MostlyPDF Pro plan and are marked "Pro". Some sites block other pages from reading their files. When that happens, MostlyPDF opens the tool and asks you to drop the downloaded PDF in instead.