One Click.
22 Test Scenarios.
Zero Setup.
Automatically performs Smoke testing in the background on any webpage, generating thorough reports with identified issues and screenshots.
Exploratory Tester Get the Test Report Before You Start Testing
Free plugin that automatically performs exploratory and accessibility testing in the background on any webpage, generating thorough reports with identified issues and screenshots.
Available Across All Major Browsers
google Chrome
Edge
Opera
available at chrome store
Fire Fox
not available
Chromium
available at chrome store
Brave
available at chrome store
Torr
not available
Safari
not available
How It Works
Start finding bugs in 3 simple steps
Install Extension
Add Exploratory Tester to Chrome from the Web Store. Pin it to the toolbar for quick access.
Click the Icon
Visit any website and click the Exploratory Tester icon. 22 tests — including a full WCAG 2.1 AA accessibility audit — run instantly and results appear right in the popup.
Review & Export
Browse results by category, click any issue to locate it on the page. Export as HTML, Word, or PDF. Download all screenshots as ZIP.
Powerful Features for QA Teams
Everything you need to catch bugs before your users do
Accessibility Testing — WCAG 2.1 AA
Runs a comprehensive 18-point accessibility audit on every scan. Checks images, forms, ARIA, keyboard navigation, color contrast, landmarks, skip links, and more — all mapped to WCAG 2.1 AA success criteria.
One-Click Testing
Click the extension icon and all 22 tests run instantly on the current page. No configuration needed — results appear right in the popup, ready to review.
Per-Tab Reports
Each browser tab keeps its own test results and screenshots. Switch between tabs and always see the correct report for that specific page — no data mixing.
Smart Screenshot Capture
Automatically scrolls to each error element and captures a screenshot with it highlighted. Download all screenshots as a ZIP with one click. Max 2 per category to save resources.
Export Reports (HTML, DOC, PDF)
Generate professional reports with direct download buttons. Share findings with your team as HTML, Word, or PDF — all in one click.
API & Network Monitoring
Intercepts Fetch & XHR requests in real time. Detects 4xx/5xx errors, slow API responses (>3s), and failed network requests automatically.
Customizable Test Categories
Choose exactly which tests to run with per-category checkboxes. Enable or disable any of the 22 test categories from the Settings panel. Grouped with Select All / Deselect All controls.
3-Layer Spelling Check
Catches 150+ common misspellings, 100+ informal abbreviations (like "abt", "pls", "thru"), and suspicious words with no vowels. 1500+ valid word whitelist to avoid false positives.
SEO & Meta Tags Audit
Checks title, meta description, canonical URL, Open Graph tags, viewport, robots directives, H1, and lang attribute. Validates visible elements only to avoid false positives.
Dark Mode & Themes
Choose between Light, Dark, or System (Auto) themes. Every element — settings, modals, coverage bars, screenshots — adapts perfectly using CSS variables.
Performance Timing & Coverage
See per-test execution time with color-coded indicators, overall test coverage percentage (max 100%), and configurable timeout (15s to no limit).
Click-to-Locate Elements
Click any test result to locate and highlight the problematic element on the page with a purple pulsing border. Jump straight to the issue.
Real-Time Badge & Stop Button
Toolbar icon shows error count instantly and animates while testing. Stop tests mid-run to see partial results on heavy pages.
22 Automated Test Categories
Comprehensive testing across forms, UI, SEO, accessibility, and network — choose which tests to run
What's New in v1.4.8
Major improvements for a smoother, more inclusive testing experience
Accessibility Testing — WCAG 2.1 AA NEW
A full 18-point accessibility audit now runs automatically on every scan. Covers alt text, color contrast, form labels, ARIA roles, keyboard navigation, skip links, landmarks, tab order, and more — all mapped to WCAG 2.1 AA success criteria. Issues are flagged by severity so you know what to fix first.
Click-to-Test
Tests run when you click the extension icon — no background auto-run. You're in control of when tests execute on each page.
Per-Tab Test Results
Each tab keeps its own report. Switch between tabs and see the correct results for each page — no more data mixing between tabs.
SEO Meta Tags Audit
Comprehensive SEO check: title, meta description, canonical URL, Open Graph tags, viewport, robots, H1 tag, and lang attribute — with accurate severity levels.
Scroll-to-Element Screenshots
Screenshots now automatically scroll to the error element before capture. Every screenshot shows the actual issue in view — enabled by default.
N/A Status for Missing Elements
Tests now show "N/A — Not Applicable" when elements don't exist on a page, instead of false passes. Clear at-a-glance visibility.
Tutorial & Help Docs
Built-in tutorial video link and comprehensive help documentation accessible from the footer. Every test category explained with examples.
Start Finding Bugs Today
Join QA professionals who use Exploratory Tester to catch issues before users do — including accessibility. Free forever, no account needed.
Add to Chrome — Free ForeverGet the Offline Build Up & Running
Prefer a self-hosted setup or working in a restricted environment? Install Exploratory Tester directly in Chrome in just a few simple steps.
Download the ZIP file
Click the Download Offline Build button above to grab the latest offline build of Exploratory Tester.
Extract the archive
Right-click the downloaded file and choose Extract All (Windows) or double-click to unzip (macOS). Remember the folder location — you'll need it in step 5.
Exploratory Tester
Open extensions → Developer mode → Load unpacked → Pin it.
Open Chrome's extensions page
In Chrome, paste chrome://extensions/ into the address bar and press Enter.
Turn on Developer mode
Look for the Developer mode toggle in the top-right corner of the extensions page and switch it on. Three new buttons will appear.
Load the unpacked extension
Click Load unpacked, then select the folder you extracted in step 2. Exploratory Tester will install instantly and appear in your extensions list.
Pin it and start testing
Click the puzzle-piece icon in Chrome's toolbar and pin Exploratory Tester for one-click access. Open any webpage and click the icon to launch the tool.