--- title: Install TC Screen Ruler on openSUSE using the Snap Store | Snapcraft description: Get the latest version of TC Screen Ruler for on openSUSE - TC Screen Ruler - Pixel Ruler, Edge Raycast & Display DPI Utility url: https://snapcraft.io/install/tc-screen-ruler/opensuse --- [Canonical Snapcraft](https://snapcraft.io/) # Install TC Screen Ruler on **openSUSE** # TC Screen Ruler [TC Studio (thanhcong1902)](https://snapcraft.io/publisher/thanhcong1902 "View all snaps from TC Studio (thanhcong1902)") * [TC Studio (thanhcong1902)](https://snapcraft.io/publisher/thanhcong1902 "View all snaps from TC Studio (thanhcong1902)") [Install](https://snapcraft.io/install/tc-screen-ruler/opensuse#install) #### TC Screen Ruler - Pixel Ruler, Edge Raycast & Display DPI Utility TC Screen Ruler is a precision desktop pixel measurement, color-tolerance edge-detection raycasting, and physical display DPI inspection utility for Linux. An independent Linux alternative inspired by PowerToys Screen Ruler, it enables designers, frontend engineers, QA testers, and desktop users to measure exact pixel spans and physical dimensions directly on live desktop captures or reference images. Key Features: * Live Desktop & Reference Image Canvas: Captures the active Linux desktop via QScreen.grabWindow(0), loads any local PNG/JPEG/BMP/WebP image, or renders a precision DPI calibration grid sized to the real connected monitor. * Four Interactive Ruler Modes: Measure elements with Horizontal, Vertical, 4-Way Crosshair, and interactive Bounding-Box pixel rulers with top and left graduated scales. * Automatic Color-Tolerance Edge-Detection Raycast: Casts pixel-accurate rays Left, Right, Up, and Down from the cursor with adjustable Euclidean RGB color tolerance (0-120) to snap automatically to UI borders, margins, buttons, and layout containers. * Real Physical Display DPI Conversion: Reads live QApplication.screens() geometry, logical/physical DPI, refresh rate, and Linux kernel /sys/class/drm connector telemetry to convert pixels accurately into millimeters (mm), inches (in), and typographic points (pt). * Live 9x9 Pixel Loupe & Pinned Measurement Log: Inspect magnified cursor pixels with HEX/RGB color readouts, pin multiple measurements onto the canvas, scan local image dimensions, export CSV/JSON/TXT measurement tables, and export crisp annotated PNG images. * Bilingual Interface: Instant one-click toggle between Vietnamese and English. Disclaimer: This project is an independent open-source utility built by TC Studio and is not affiliated with, sponsored by, or endorsed by Microsoft Corporation. ### Package name * tc-screen-ruler --- ### License * MIT --- ### Last updated * Today - latest/stable --- ##### Report a Snap Store violation * [Report this Snap](https://snapcraft.io/install/tc-screen-ruler/opensuse#report-snap-modal) --- [See more information about tc-screen-ruler ›](https://snapcraft.io/tc-screen-ruler) ## Enable snaps on openSUSE and install TC Screen Ruler Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully. Snaps are discoverable and installable from the [Snap Store](https://snapcraft.io/store), an app store with an audience of millions. ### Enable snapd Snap can be installed from the command line on openSUSE Leap 15.x and Tumbleweed. You need first add the *snappy* repository from the terminal. Choose the appropriate command depending on your installed openSUSE flavor. Tumbleweed: ``` sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Tumbleweed snappy ``` Leap 15.x: ``` sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Leap_15.6 snappy ``` If needed, Swap out `openSUSE_Leap_15.` for, `openSUSE_Leap_16.0` if you’re using a different version of openSUSE. With the repository added, import its GPG key: ``` sudo zypper --gpg-auto-import-keys refresh ``` Finally, upgrade the package cache to include the new *snappy* repository: ``` sudo zypper dup --from snappy ``` Snap can now be installed with the following: ``` sudo zypper install snapd ``` You then need to either reboot, logout/login or `source /etc/profile` to have /snap/bin added to PATH. Additionally, enable and start both the *snapd* and the *snapd.apparmor* services with the following commands: ``` sudo systemctl enable --now snapd sudo systemctl enable --now snapd.apparmor ``` ### Install TC Screen Ruler To install TC Screen Ruler, simply use the following command: ``` sudo snap install tc-screen-ruler ``` ### Other popular snaps… [See more...](https://snapcraft.io/search?categories=featured) [See more in Featured](https://snapcraft.io/search?categories=featured) ### More things to do… #### [Get the snap store](https://snapcraft.io/snap-store) Browse and find snaps from the convenience of your desktop using the snap store snap. #### [Learn more about snaps](https://snapcraft.io/docs) Interested to find out more about snaps? Want to publish your own application? Visit [snapcraft.io](https://snapcraft.io/) now. [Back to top](https://snapcraft.io/install/tc-screen-ruler/opensuse) © 2026 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd. 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