Reveals structured metadata (Microdata, RDFa, JSON-LD, Turtle, etc.) embedded within HTML documents.

Latest Version

Version
3.4.8
Update
November 12, 2024
Size
2.55MiB
Developer
Category
Users
7,000+
Rating
4.76471 ★
Manifest Version
3
Web Store Status
Languages Support
English
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Permissions
Storage
WebRequest
ContextMenus
Scripting
DeclarativeNetRequest
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OpenLink Structured Data Sniffer Extension

What is it?
The OpenLink Structured Data Sniffer (OSDS) is an extension for Web Extensions compliant browsers (e.g., Google Chrome, Microsoft Edge, Opera, and many others) that discovers Metadata embedded within HTML documents as Structured Data Islands and presents what's discovered using a Property Sheet presentation style.

Currently, OSDS supports discovery and processing of Structured Data Islands published using notations such as Microdata, RDFa, JSON-LD, RDF-Turtle, RDF-XML, CSV, and JSON.

Why is it important?
It simplifies the process of understanding what a given HTML document is about, via its metadata, for both end-users and developers. For instance, it helps Digital Brand Managers, Digital Content Managers, and Semantic Search Engine Optimization (SSEO) practitioners understand what may or may not be affecting Search Engine Results Pages (SERPs) placements.

How is it used?

Simply install the extension to your browser and then visit a page of interest. On page arrival, the OSDS icon will be visually activated thereby indicating metadata discovery; once the icon is clicked, you will be presented with a presentation of transformed metadata.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "OpenLink Structured Data Sniffer", "short_name": "OSD Sniffer", "author":"OpenLink Software", "homepage_url": "http://osds.openlinksw.com/", "version": "3.4.8", "manifest_version": 3, "minimum_chrome_version": "88", "description": "Reveals structured metadata (Microdata, RDFa, JSON-LD, Turtle, etc.) embedded within HTML documents.", "icons": { "16": "images/icon16.png", "48": "images/icon48.png", "128": "images/icon128.png" }, "action": { "default_icon": "images/icon16.png", "default_title": "Show Document Metadata", "default_popup": "panel.html" }, "background": { "service_worker": "service_worker.js" }, "options_ui": { "page": "options.html", "open_in_tab": true }, "content_scripts": [ { "matches": ["file:///*/*","*://*/*"], "js": ["lib/jquery-3.1.0.min.js", "lib/microdatajs/jquery.microdata.js", "lib/microdatajs/jquery.microdata.json.js", "lib/RDFa.js", "lib/n3-browser.js", "lib/jquery.mark.js", "lib/namespace.js", "lib/posh.js", "utils.js", "helpers_ui.js", "browser.js", "settings.js", "sniffer_nano.js", "super_links.js", "sniffer.js", "chat-inject.js", "social_sniffer.js"], "css": ["content.css"], "run_at": "document_idle" }, { "matches": ["https://openlinksoftware.github.io/*"], "js": ["browser.js", "lib/solid-client-authn.bundle.js", "oidc-webid-inject.js"], "run_at": "document_start" } ], "host_permissions": [ "" ], "permissions": [ "storage", "webRequest", "contextMenus", "scripting", "declarativeNetRequest" ], "content_security_policy": { "extension_pages": "script-src 'self' ; object-src 'self'; style-src 'self' 'unsafe-inline' chrome-extension://lib https://solid.openlinksw.com; media-src 'self' blob: https://* http://* 'unsafe-inline' chrome-extension://lib ;" }}
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How to download and manually install OpenLink Structured Data Sniffer extension for Chrome

Looking for a way to install OpenLink Structured Data Sniffer extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install OpenLink Structured Data Sniffer extensions manually, this article outlines two simple methods to effortlessly install OpenLink Structured Data Sniffer extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download OpenLink Structured Data Sniffer extension and manually install through Drag &Drop

If you ever need to manually install a OpenLink Structured Data Sniffer extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the OpenLink Structured Data Sniffer Extension by clicking the "Download CRX" button on the website.

Look for the OpenLink Structured Data Sniffer extension you wish to install. Go to the website and download the OpenLink Structured Data Sniffer extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for OpenLink Structured Data Sniffer extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the OpenLink Structured Data Sniffer extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download OpenLink Structured Data Sniffer extension for Chrome and install in Developer Mode

This is another method to install OpenLink Structured Data Sniffer extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the OpenLink Structured Data Sniffer extension file

Select and download the OpenLink Structured Data Sniffer extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the OpenLink Structured Data Sniffer extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your OpenLink Structured Data Sniffer extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the OpenLink Structured Data Sniffer extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install OpenLink Structured Data Sniffer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Joshua Hintze (ID: 0000000e7105e0c1) Voted 2 ★ - Updated 04/04/2023 Unfortunately this plugin adds popup and snackbar items to the DOM. You can see this by inspecting DOM and seeing super_links_popup items and osds_popup junk get added to your DOM in your browser.

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Ron Henry (ID: 0000002fc452498a) Voted 4 ★ - Updated 11/12/2021 Cool, I've been looking for that

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Aaron Bradley (ID: 000000b758cb28fd) Voted 5 ★ - Updated 05/09/2019 Hands down the best-in-class extension for inspecting a page for the presence or absence of structured or semi-structured data.

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Tyson Graaff (ID: 00000001fe913b19) Voted 5 ★ - Updated 02/12/2018 Just what I was looking for. Let's me know if my JSON-LD is on the page and I can check it in an easy to read format.

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Michael Andrews (ID: 00000084a11929db) Voted 5 ★ - Updated 04/20/2017 Very helpful tool for seeing structured data on a web page.