Developer tools
Discover extensions for inspecting pages, working with API requests and testing websites, alongside their security reports.
18 assessed extensions · Median safety: 67/100
How these extensions are selected
Included listings have a matching extracted feature, a published score, and at least 100 users or 10 weekly downloads in one store. Removed listings are excluded. Up to 50 results are ordered by reported users or weekly downloads.
Higher safety scores indicate lower assessed risk. Inclusion is not an endorsement.
How to compare this collection
- Choose the task you need: page inspection, request tooling or test automation.
- Debugger, request and broad website permissions can expose sensitive sessions. Keep development tools restricted to the sites you use them on.
- Popularity is the ordering criterion here, not a recommendation to grant access to production accounts.
React Developer Tools
Adds React debugging tools to the Chrome Developer Tools. Created from revision 1d34f91dfd.
3.54.64.2Postman Interceptor
Capture requests from any website within Firefox and send them to Postman App
2.74.34.0Salesforce Inspector Reloaded
Productivity tools for Salesforce administrators and developers to inspect data and metadata directly from the Salesforce UI.
5.04.54.4SelectorsHub
Locators Plugin to Auto Generate and Verify Playwright Locators, XPath & CSS Selectors.
4.64.44.2PerfectPixel by WellDoneCode (pixel perfect)
Drop your mockup on the live page as an overlay for pixel-perfect comparison with your code.
4.74.33.1Dynatrace Real User Monitoring
This extension allows you to monitor (SaaS) applications where installation of Dynatrace OneAgent is not possible.
Omnibug
Omnibug is a browser extension to decode and display outgoing digital marketing tool requests.
4.24.14.9ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
SAML, WS-Federation and OAuth 2.0 tracer
Trace and decode all SAML, WS-Federation and OAuth 2.0 (OIDC) messages
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
Accessibility Insights for Web
Accessibility Insights for Web helps developers quickly find and fix accessibility issues.
Octotree - GitHub code tree
GitHub on steroids
4.44.8SN Utils - Tools for ServiceNow
Productivity tools for ServiceNow — Edge Edition, offered by SN Utils B.V. Not affiliated with ServiceNow, Inc.
Font Finder
An easy-to-use font inspector to get CSS styles of the selected element
HttpWatch: HTTP Debugger
A clearer, easier-to-use network panel for Edge: requests grouped by page and headers explained. Requires HttpWatch for Windows.
4.52.5CORS Unblock
No more CORS error by appending 'Access-Control-Allow-Origin: *' header to local and remote web requests when enabled
Requestly: Supercharge your Development & QA
Features: Intercept & Modify HTTPs Requests, API Mocking, GraphQL Mocking, Rest API Client, API Testing, Modify HTTP Headers, etc
SP Formatter
Customize your SharePoint Column, View or Form Layout Formatting JSON using a full-featured editor instead of the default one.
5.04.2Read the security reports
- React Developer Tools: security report
- Postman Interceptor: security report
- Salesforce Inspector Reloaded: security report
- SelectorsHub: security report
- PerfectPixel by WellDoneCode (pixel perfect): security report
- Dynatrace Real User Monitoring: security report
- Omnibug: security report
- ColorZilla: security report
- SAML, WS-Federation and OAuth 2.0 tracer: security report
- Flagfox: security report
- Accessibility Insights for Web: security report
- Octotree - GitHub code tree: security report
- SN Utils - Tools for ServiceNow: security report
- Font Finder: security report
- HttpWatch: HTTP Debugger: security report
- CORS Unblock: security report
- Requestly: Supercharge your Development & QA: security report
- SP Formatter: security report