DocStudioPDF

DocStudio PDF is a free, open-source PDF toolkit designed to make document management simple, accessible, and private. With more than 115 tools, users can merge, split, compress, edit, sign, convert, organize, and secure PDF documents directly in their browser without installing software or creating an account. Unlike traditional online PDF services, DocStudio PDF processes files locally using modern browser technologies and WebAssembly, so documents never need to be uploaded to external servers. It supports conversions between PDF and formats such as Word, Excel, PowerPoint, JPG, PNG, WebP, Markdown, CSV, and JSON. With no subscriptions, watermarks, daily usage limits, or mandatory registration, DocStudio PDF makes document processing accessible to everyone. Supported tools can also work offline after the initial loading, providing a convenient and privacy-first PDF solution.