---
title: Install Screen Pixel Ruler and Loupe on elementary OS using the Snap Store
  | Snapcraft
description: Get the latest version of Screen Pixel Ruler and Loupe for on elementary
  OS - Screen pixel ruler, 3-point angle protractor, and live cursor loupe
url: https://snapcraft.io/install/pixel-ruler-protractor/elementary
---

[Canonical Snapcraft](https://snapcraft.io/)

# Install Screen Pixel Ruler and Loupe on **elementary OS**

# Screen Pixel Ruler and Loupe (pixel-ruler-protractor)

[Nguyen Van Thanh (thanhnv128)](https://snapcraft.io/publisher/thanhnv128 "View all snaps from Nguyen Van Thanh (thanhnv128)")

* [Nguyen Van Thanh (thanhnv128)](https://snapcraft.io/publisher/thanhnv128 "View all snaps from Nguyen Van Thanh (thanhnv128)")
* [Art and Design](https://snapcraft.io/search?categories=art-and-design)

[Install](https://snapcraft.io/install/pixel-ruler-protractor/elementary#install)

#### Screen pixel ruler, 3-point angle protractor, and live cursor loupe

Screen Pixel Ruler and Loupe is an independent open-source Linux visual
measurement suite for UI designers, developers, and engineers, providing an
alternative to desktop design measurement tools like PicPick. Not affiliated
with, sponsored by, or endorsed by any third-party software vendor.

FEATURES

* Floating On-Screen Pixel Ruler: Always-on-Top translucent X11 horizontal,
  vertical, and dual-axis caliper ruler with mouse-wheel opacity, drag and
  arrow-key pixel nudging, interactive Pin A/B hypotenuse readout, and unit
  conversion across px, mm, cm, in, and CSS rem calibrated by RandR/QScreen
  physical monitor DPI.
* 3-Point Screen Angle Protractor & Canvas: interactive transparent 360-degree
  on-screen protractor and measurement canvas to compute exact vertex angles,
  supplementary angles, arm lengths, slope percentages, and bounding-box
  aspect ratios over live desktop snapshots or loaded images.
* 10x Live Cursor Loupe & Measurement Log: real-time 4x-16x cursor pixel grid
  magnifier with RGB, HEX, HSL, and CMYK readouts, clipboard copy shortcuts,
  and persistent SQLite/JSON measurement history with UTF-8 CSV export.
* Bilingual Interface: defaults to English with an instant Vietnamese toggle.

SUPPORT & DONATE

* Created by Thanh Nguyen — <https://buymeacoffee.com/thanhnv128b>

### Package name

* pixel-ruler-protractor

---

### License

* MIT

---

### Last updated

* 14 November 2026 - latest/stable

---

### Websites

* [buymeacoffee.com](https://buymeacoffee.com/thanhnv128b "https://buymeacoffee.com/thanhnv128b")

---

### Contact

* [buymeacoffee.com](https://buymeacoffee.com/thanhnv128b "https://buymeacoffee.com/thanhnv128b")

---

##### Report a Snap Store violation

* [Report this Snap](https://snapcraft.io/install/pixel-ruler-protractor/elementary#report-snap-modal)

---

[See more information about pixel-ruler-protractor ›](https://snapcraft.io/pixel-ruler-protractor)

## Enable snaps on elementary OS and install Screen Pixel Ruler and Loupe

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 on elementary OS from the command line. Open *Terminal* from the Applications launcher and type the following:

```
sudo apt update
sudo apt install snapd
```

Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.

### Install Screen Pixel Ruler and Loupe

To install Screen Pixel Ruler and Loupe, simply use the following command:

```
sudo snap install pixel-ruler-protractor
```

### 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/pixel-ruler-protractor/elementary)

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