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PDFEncrypt is a free, open-source native Windows app that encrypts PDF files using standard PDF encryption algorithms. Users specify a password required to open the document along with options and permissions for the PDF. Encryption runs locally on the Windows PC rather than uploading files to a third-party server. The app uses the iTextPDF library and is released under the AGPL license.
Rare2PDF is a free online converter that turns specialized files into PDF, including Jupyter Notebooks, LaTeX documents, Markdown files and academic citations such as RIS and EndNote files. It lists over 20 converters, requires no registration or installation, and states that uploads are deleted within two hours.
iLovePDF is an online service for working with PDF files that offers tools for merging, splitting, compressing, converting, rotating, unlocking and watermarking PDFs, among other tasks. The service has been available since 2010, and mobile and desktop applications are also offered.
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PDFEncrypt is a free, open-source native Windows app that encrypts PDF files using standard PDF encryption algorithms. Users specify a password required to open the document along with options and permissions for the PDF. Encryption runs locally on the Windows PC rather than uploading files to a third-party server. The app uses the iTextPDF library and is released under the AGPL license.
Rare2PDF is a free online converter that turns specialized files into PDF, including Jupyter Notebooks, LaTeX documents, Markdown files and academic citations such as RIS and EndNote files. It lists over 20 converters, requires no registration or installation, and states that uploads are deleted within two hours.
iLovePDF is an online service for working with PDF files that offers tools for merging, splitting, compressing, converting, rotating, unlocking and watermarking PDFs, among other tasks. The service has been available since 2010, and mobile and desktop applications are also offered.
BreezePDF is a PDF editor that runs in the browser or locally on a desktop. It provides functions for adding text, signatures, form fields and images, and for merging, splitting, reordering and password-protecting PDFs. It also supports export to DOCX and CSV. Files are processed locally and are not uploaded to servers.
itinypdf is a browser-based collection of PDF tools offered free with no watermark or account. It includes merging, compressing, splitting, converting, signing and editing PDFs, with tools for organizing pages, locking and unlocking files, and adding watermarks or page numbers. The site states that files stay on the user's device and are not uploaded to servers.
PDF4QT is an open source PDF editor for Windows and Linux under the LGPLv3 license. It offers applications for viewing, editing and rendering PDF documents, plus a C++ library and command line tool for developers. Features include digital signature verification, annotation editing and page organization such as merging and splitting.
