Developers and designers need to measure the width, height, or alignment of page elements in pixels without using browser DevTools; this extension provides a quick drag-to-measure overlay on any webpage.

User clicks the extension icon, which injects a transparent overlay on the current page. User clicks and drags to draw a rectangle; width and height labels appear in pixels. User presses Escape or clicks the icon again to remove the overlay. Options page allows customizing overlay and selection colors/opacity.

Target users: Web developers / Web designers / UI/UX designers / QA testers

Extension source is very small (5 text files) making full review straightforward — no hidden complexity detected

Monetization

No paid features detected

The extension is GPLv3-licensed free software with no premium features, subscription tiers, billing APIs, or upgrade UI. All keyword hits for 'pro' and 'license' are from the GPL license header text, not paid feature indicators. The options page only allows color/opacity customization — no gated features.

Confidence: 100
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension works entirely locally. It uses chrome.storage.local for user preferences (colors/opacity) and chrome.scripting to inject a measurement overlay into the active tab. There is no authentication flow, no account creation, no external API calls requiring credentials, and no login UI anywhere in the code.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab、storage、scripting

Publisher

Trishul

Trishul Goel

Email: [email protected]
Phone: --
Address: - Munich - Germany

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

View developer portfolio

Permissions

Host access