Alternatives to Schema Builder
Similar tools and alternatives in the Browser Tools & Bookmarklets category
Original Tool
Schema Builder🔓 Open Source Alternatives to Schema Builder
16 open source alternatives
Home SEO Bookmarklet
One-click bookmarklet to check on-page elements social tags and image assets
AMP Browser Extension
Instantly validates Accelerated Mobile Pages and provides real-time debugging for web developers
Dark Reader
Enables dark mode for every website to reduce eye strain during long SEO audit sessions
Wappalyzer
Identify web technologies on websites including CMS frameworks and payment processors
Dimensions
A tool for designers to measure screen dimensions in the browser for pixel perfect layouts
JSONView
Formats and validates JSON responses in the browser for easier API and structured data debugging
EditThisCookie
Manage cookies for SEO testing including location spoofing and session management.
Tab Manager Plus
Efficiently manage hundreds of tabs with search filter and deduplication features
LinkClump
Allows you to open copy or bookmark multiple links at once by dragging a selection box
WhatFont
The easiest way to identify fonts on web pages by simply hovering over the text
CSP Evaluator
Evaluates Content Security Policies to detect bypasses and improve site security
Linkclump
Drag a box around links to open them all in new tabs or copy them to clipboard
Clear Cache
One-click cache and data clearing to test live SEO changes without browser lag.
Check My Links
Link crawler that finds broken links on a webpage to assist in technical SEO cleanup
Clear Cache Shortcut
One-click button to clear browser cache and cookies for testing fresh site changes
Eye Dropper
Color picker that allows you to pick colors from any webpage or color picker interface
💚 Free Alternatives to Schema Builder
27 free alternatives
Session Buddy
Unified session and tab manager to save and export groups of SEO research tabs
Ayima Page Insights
Highlight on-page SEO issues directly on the page including hidden content and alt text.
Robots Exclusion Checker
Visual indicator of robots.txt and meta-robots directives to prevent accidental deindexing.
Open SEO Stats
Shows web rank and SEO stats for the current page including backlinks and indexed pages
Structured Data Testing Tool
Validator for Schema.org and JSON-LD markup that simulates Google's rich results
ColorZilla
Advanced eyedropper and color picker for analyzing website color schemes for design and SEO
Core Web Vitals Overlay
Visualizes LCP FID and CLS metrics directly on the page for real-time performance tuning
Open Graph Preview
Visualizes how your website will appear on social media platforms like Facebook and Twitter
Portent's SEO Page Review
Review meta data and on-page content relevance with a focus on marketing intent
OAuth 2.0 Playground
Test and debug OAuth 2.0 APIs for Google Search Console and Analytics integrations.
Web Developer Overlay
Adds a toolbar to the browser with various web developer tools for accessibility and SEO testing
Meta SEO Inspector
Inspects metadata and microdata for errors and compliance with search engine guidelines
Google Optimize (Legacy Check)
Visual editor for A/B testing although sunsetted many bookmarklets still use its logic
Link Redirect Trace
The "all-in-one" redirect path analyzer that covers headers rel-canonicals and more
A/B Trend Checker
Calculates statistical significance for A/B testing directly within your browser session
Detailed SEO Extension
Professional SEO extension providing instant insights into metadata schema markup and headers
Tag Assistant Legacy
Troubleshoot installation of various Google tags including Google Analytics and Ads
SEO Search Simulator
Simulates Google searches from any location in the world to check local rank and results
Da Vinci Tools
Enhances Google Analytics and GTM with high-level visualizations and usability features.
FontScanner
Detects and lists all fonts used on a website along with their CSS properties and sizes
Note Anywhere
Add virtual sticky notes to any web page that persist when you return to the URL
Responsive Design Checker
Test how your site responds to different screen resolutions and standard device sizes
Robot.txt Viewer
Quickly view and validate robots.txt files with syntax highlighting for better site crawling
Check My Headers
Detailed view of HTTP response headers to verify security policies and caching rules
Sitemap Navigator
Browser-based tool to quickly parse and navigate XML sitemaps for deep site analysis
Web Developer Checklist
Interactive checklist of best practices for SEO mobile performance and security compliance
Google Search Results Preview
See how your page title and meta description will look in Google before you publish
💼 Commercial Alternatives to Schema Builder
7 commercial alternatives
Ghostery
Privacy extension that shows trackers and allows you to block them to see page speed impact
MozBar
SEO toolbar that provides instant metrics like Domain Authority and Page Authority
KeySearch Starter
A browser-based keyword tool for identifying low competition niches and related search terms
Fonts Ninja
Identify fonts used on any website and inspect CSS properties like size and spacing
Mobile Simulator
Test your website responsive design across dozens of mobile devices and tablet screen sizes
Data Miner
Scrape data from any website into Google Sheets or Excel with one click
Full Page Screen Capture
Capture high-resolution full-page screenshots of entire websites with one click