Evince vs Highlights

Evince is a free document viewer for Linux desktop users. It opens PDF, PostScript, DjVu, DVI, XPS, OXPS, and Comic Book Archive files, and can display supported documents as full-screen presentations. Interactive forms can be completed, including text fields and scrollable list boxes. For PDFs, Evince can add notes and text highlights; these annotations are limited to PDF files. SyncTeX synchronizes a TeX source file with its resulting PDF. Printing is documented for DVI, DjVu, PDF, PostScript, and TIFF. When opening a password-protected PDF, Evince prompts for its password. It is not a file editor. Some Linux distributions may need the relevant backend package to support every listed format. The project wiki recommends obtaining Evince through the user's Linux distribution and points to packages or source for other download options. The help site includes user documentation and directions for reporting application bugs.

Highlights is a PDF reader for research that turns PDF annotations into notes, available on iPhone, iPad, and Mac. Its free plan supports reading and annotating PDFs, merging annotations, editing PDF metadata, and Handoff. Notes can be exported as Markdown, TextBundle, HTML, WebArchive, or PDF, or sent directly to supported apps including Evernote, DEVONthink, Ulysses, Bear, and Keep It. For scientific articles, Highlights can find DOIs and retrieve metadata; it can link to a PDF on the device if the citation has already been read. Built-in multilingual OCR extracts text from PDFs without searchable text, with processing done on device. Smart Copy outputs copied images as PNG, tables as CSV, and citations as BibTeX. PDFs can be stored on device, in iCloud Drive, Dropbox, or another sync service, while annotations use standard PDF annotations. On macOS it integrates with Bookends and Papers. The free plan is available alongside Pro at $4.99 a month or $29.99 a year. The maker describes the app as intended for students and researchers.