Meta Pixel Debugger Pro

Debug Meta Pixel & Facebook Pixel events in real time. Check Conversions API dedup, parameters, errors and export to JSON/CSV.

Meta Pixel Debugger Pro is a Meta Pixel and Facebook Pixel checker for Chrome. It shows every pixel event on the page you are viewing, tests each one for errors, and tells you exactly how to fix them. Open the side panel on any website and see what your pixel really sends, in real time. Use it whenever you set up, change or troubleshoot your tracking — your everyday pixel helper, pixel tester and event tracking debugger. It's built for media buyers, developers, online store owners and agencies who need to trust their Meta ads tracking before they spend. WHAT YOU GET • Live event feed: every standard, custom and automatic event, with each parameter shown in readable, color-coded JSON • Pixels tab: every pixel ID on the page, init calls, library status and version • Issues tab: errors, warnings and tips, each explained in plain language with a fix • Page health score from 0 to 100, so you know where you stand at a glance • Page-by-page timeline for multi-step checkouts and single-page apps • Search and filters by event name, pixel ID, parameter or status • Export the event log to JSON or CSV in one click to share with developers or clients FIX COMMON PIXEL PROBLEMS FAST • Facebook Pixel not firing, or the pixel code is on the page but the library never loaded • Purchase event not tracking revenue because value or currency is missing • Duplicate events from a pixel installed twice or a tag that fires twice • Custom events that should be standard events (for example "purchase" instead of "Purchase") • Dynamic ads and catalog sales not matching because content_ids or content_type is missing • Events that are called in code but never reach Meta AUTOMATIC CHECKS • Purchase without value or currency, a zero value, or a missing order_id • Invalid ISO 4217 currency codes and values that are not numbers • Misspelled parameter names such as "Value", "currency_code" or "product_id" • content_ids that are not a list, empty IDs, and invalid contents quantities or prices • A value that doesn't match the cart total, and num_items that doesn't match contents • Emails or phone numbers sent in event parameters or the page URL, which can get a pixel restricted • Recommended parameters missing for each standard event • Floods of events fired within one second, often a tracking loop CONVERSIONS API (CAPI) DEDUPLICATION If you send events from both the browser pixel and the Conversions API, Meta needs a matching event_id to remove duplicates. The extension flags events without an event_id and event IDs that are reused, two common causes of double-counted or dropped conversions. ADVANCED MATCHING, CONSENT AND COOKIES • See which customer data fields the pixel sends and whether they are hashed. Raw values are never shown or stored. • Detect consent revoke and grant, and Limited Data Use (LDU) • Check that the first-party _fbp and _fbc cookies are set, which matters for match quality and attribution WORKS ON ANY WEBSITE It works on any website that runs a Meta Pixel, whether the pixel is added by hand, through a tag manager, or by your store platform's built-in integration. It also detects pixels that run inside sandboxed frames. PRIVATE BY DESIGN All processing happens locally in your browser. Event logs stay in temporary browser storage and are cleared when you close Chrome. The only network request the extension makes is your email address when you choose to sign in to unlock extra checks. It has no analytics or tracking, and never sells or shares data. LIGHT, FAST AND MULTILINGUAL Light and dark mode that follows your system, keyboard shortcut Alt+Shift+M, and an interface in 11 languages. HOW TO USE 1. Install the extension and pin it to your toolbar 2. Open any website that runs a Meta Pixel 3. Click the icon (or press Alt+Shift+M) to open the side panel and review events, pixels and issues 4. Fix what it flags, reload the page, and watch the health score go up FREQUENTLY ASKED QUESTIONS Is it free? Yes. Install it and start debugging right away. No account or sign-up needed — signing in is optional and only unlocks a few extra checks. How do I check if my Facebook Pixel is working? Open your site, click the extension icon, and browse your pages. Every event the pixel sends appears in the side panel with its parameters. A green status means the event passed all checks. How do I test the Purchase event? Place a test order (or open your thank-you page) with the side panel open. The extension shows the Purchase event and checks value, currency, content_ids and event_id. Can it help with Conversions API deduplication? Yes. It shows the event_id of every browser event and warns when it is missing or reused, so you can match it with your server events. Does it work with tag managers and store platforms? Yes. It works whether the pixel is added by hand, through a tag manager, or by your store platform's built-in Facebook & Instagram integration. Does it slow down websites or collect my data? No. It observes pixel activity on the page you are inspecting and processes everything locally on your device. Unless you sign in, nothing leaves your browser. Meta Pixel Debugger Pro is an independent tool and is not affiliated with or endorsed by Meta Platforms, Inc. Meta and Facebook are trademarks of Meta Platforms, Inc.