Best PDF Tools for Linux in 2026: Command Line and Browser

These are the command-line tools every Linux user who works with PDFs should have installed. They cover the core operations and form the foundation of any PDF automation workflow.

1. 1Install the core toolkit: `sudo apt install ghostscript pdftk poppler-utils qpdf ocrmypdf imagemagick`
2. 2Ghostscript (`gs`): Compression, conversion, and complex PDF manipulation — the Swiss Army knife of PDF tools.
3. 3pdftk: Merging, splitting, rotating, watermarking, and form filling — the most user-friendly CLI syntax.
4. 4poppler-utils: Includes pdftoppm (PDF to images), pdftotext (text extraction), pdfunite (merge), and pdfseparate (split).
5. 5QPDF: The best tool for PDF encryption, decryption, and linearization (optimizing for web display).

PDF viewing on Linux has excellent options across different desktop environments and use cases. Okular (KDE) remains the most feature-rich PDF viewer on Linux in 2026. It supports annotations (highlights, sticky notes, drawing), form filling, presentation mode, and thumbnail navigation. It's cross-platform and available on GNOME as well, though it installs KDE dependencies. Evince (GNOME) is the default viewer for GNOME, Ubuntu, and many other distributions. It's lightweight, fast, and handles most PDFs perfectly. Basic annotation is supported. For users who want minimal dependencies and fast startup, Evince is the best choice. MuPDF is the fastest PDF renderer available on Linux — startup is nearly instant even for large documents. It's minimal by design (command-line focused with a basic viewer) and ideal for scripting and server environments where rendering speed matters. Zathura is a keyboard-driven minimalist viewer with vim-style keybindings. Popular among developers and power users who prefer keyboard navigation. Highly configurable through a text-based config file. For most desktop Linux users, Okular for feature-rich work and Evince for quick viewing covers everything needed.

Linux GUI PDF editors are less polished than Acrobat on Windows/Mac, but several options handle common editing tasks well. Master PDF Editor (free version) offers page-level editing, annotation, form creation, and digital signatures. The free version adds a watermark to modified pages, but for viewing and annotating without saving modifications to content, it's functional. The paid version ($50) removes this limitation. LibreOffice Draw can open and edit PDFs at a basic level — it treats each page as a drawing canvas where you can move and edit text boxes and images. The round-trip quality (open PDF > edit > save as PDF) is imperfect but works for simple edits like changing a name or date. GIMP (GNU Image Manipulation Program) can open PDFs as raster images at a specified DPI and export them back as PDF. Useful for editing scanned or image-heavy PDFs where you want to make visual changes to the page appearance. For advanced PDF editing comparable to Acrobat Pro, Linux still lacks a perfect solution in 2026. For most professional editing needs, a combination of LibreOffice (for text-heavy documents) and browser-based tools for quick operations covers the gap.

Browser-based tools have reached impressive capability in 2026, and on Linux they offer a compelling alternative to installed software for many PDF tasks — especially for users who prefer not to manage CLI tools or need quick operations without scripting. LazyPDF (lazy-pdf.com) is the most comprehensive browser-based PDF toolkit for Linux users. It offers 20+ tools covering merge, split, compress, rotate, watermark, protect, unlock, OCR, and format conversion (PDF to Word, Excel, PowerPoint, JPG and vice versa). Core operations run locally in your Firefox or Chromium browser — files never leave your machine for merge, split, rotate, watermark, and organize operations. LazyPDF is particularly useful for Linux users who need quick one-off operations, are on systems where they can't install packages, or prefer to avoid terminal commands for simple tasks. The interface is clean and works in any modern browser. For PDF annotation specifically, the Firefox browser's built-in PDF viewer added annotation capabilities in recent versions — you can highlight text and add text notes directly in Firefox without any additional tools. For signing PDFs in the browser on Linux, tools like Docusign (browser-based) or PDF.co's sign feature work in Firefox and Chromium without installation.