View

View is a fast, macOS Preview-style viewer for GNOME. One app opens
PDFs, images, videos, spreadsheets, source code and 3D models, and lets
you mark them up and sign them.

• PDFs: thumbnails, search, highlights and notes, forms, page reordering,

merging and signing

• Images: markup, crop, rotate, color adjustments, combine into a PDF
• Signatures drawn on the touchpad (connect raw-input, see below) or with

a mouse, pen or finger

• Live Text: select and copy text in images and scanned PDFs (OCR included)
• Video and audio playback, CSV/TSV editor, syntax-highlighted code,

STL/OBJ/PLY model viewer

Touchpad signing reads the touchpad directly and needs:
sudo snap connect view:raw-input

The GNOME Files integration (Space-bar Quick Look, "Combine Images into
PDF" script) is not available in the snap; use the .deb for that.