Flatsonar

Vernier

by Jon Kinney

Native pixel-measurement screen overlay

Sandboxed Unverified publisher MIT OR Apache-2.0 v0.5.2
Install Source code
Screenshot 1 of Vernier

About

Vernier is a native pixel-measurement overlay for designers and developers. Edge-detected snaps lock to real element bounds, with sticky guides, pinned measurements, and region capture for one-click hand-off to your annotation tool. Press Enter on a measurement to copy the value to the system clipboard. Works on macOS, Linux (Wayland), and Windows.

Permissions

Everything this app can reach outside its sandbox. Nothing here weakens it.

  • Wayland display
    --socket=wayland
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • network
    --share=network
  • GPU acceleration
    --device=dri
  • inter-process communication (needed for X11)
    --share=ipc
  • access to your pictures folder
    --filesystem=xdg-pictures
  • access to xdg-config/vernier
    --filesystem=xdg-config/vernier:rw
  • portal Clipboard
    --talk-name=org.freedesktop.portal.Clipboard
  • notifications
    --talk-name=org.freedesktop.Notifications
  • sets environment variable RUST_BACKTRACE
    --env=RUST_BACKTRACE=1

Who publishes this

Nobody has confirmed that the publisher controls this app id. Flatsonar warns before installing.

  • com.usevernier.Vernier claims the domain usevernier.com; only its owner can prove that
    publisher:namespace
  • the build has network access: it can download things the manifest does not list
    build-options:--share=network
  • the build has network access: it can download things the manifest does not list
    vernier:build-options:--share=network
  • fetches from the network during the build (nothing to audit beforehand): cargo fetch --manifest-path Cargo.toml --verbose
    vernier:build-commands

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.