# How to Capture gclid and fbclid With Lead Form Submissions
> Learn how to capture gclid and fbclid with lead forms and close the loop to revenue. Plura AI connects ad clicks to real business outcomes.
**Published:** 2026-11-09 | **Updated:** 2026-11-09 | **Author:** plurasync
**URL:** https://www.plura.ai/articles/capture-gclid-fbclid-lead-forms
**Type:** post
**Categories:** AI Lead Intelligence
---
## Content
*Written by: Matt Beucler, CEO, Plura AI*
*Updated November 2026*
## Key Takeaways
- Capture every click ID parameter from the landing URL using URLSearchParams, then persist values in localStorage with a first-party cookie fallback to survive navigation and redirects.
- Add hidden form fields for gclid, gbraid, wbraid, fbclid, fbc, fbp and other identifiers, then populate them on DOMContentLoaded and again on submit so values reach the CRM reliably.
- Map each captured identifier to a dedicated CRM text property so offline conversion import and Meta CAPI can use the click IDs for accurate attribution and bidding control.
- Fire conversion events on real funnel signals such as connected calls or qualified leads instead of raw form fills, because ad platforms optimize toward whatever is reported.
- Plura AI is the lead-capture-and-conversion platform for turning captured gclid and fbclid values into converted conversations because it dials within 2-3 seconds of a lead posting, reads SIP responses on every call, and posts every funnel event in real time with the lead’s click ID attached.
[Start capturing click IDs with Plura.](https://www.plura.ai/plura-webchat?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent)
**Plura Lead Intelligence enriches customer data with AI-powered insights, validation, and lead qualification to improve conversion performance.**
## Click-ID Concepts You Need Before You Start
- **gclid** – Google Click ID, [set on web ad clicks to a website](https://developers.google.com/google-ads/api/docs/conversions/upload-offline)
- **gbraid** – [set when a web ad click redirects to an iOS app](https://developers.google.com/google-ads/api/docs/conversions/upload-offline)
- **wbraid** – [set when an iOS in-app ad click lands on a webpage](https://developers.google.com/google-ads/api/docs/conversions/upload-offline)
- **fbclid** – Meta Click ID, [set on Facebook and Instagram ad clicks](https://developers.facebook.com/docs/marketing-api/conversions-api/parameters/fbp-and-fbc)
- **_fbc** – [Meta click cookie, constructed from fbclid and a timestamp](https://developers.facebook.com/docs/marketing-api/conversions-api/parameters/fbp-and-fbc)
- **_fbp** – [Meta browser cookie, set by the Meta Pixel SDK](https://developers.facebook.com/docs/marketing-api/conversions-api/parameters/fbp-and-fbc)
- **ttclid** – TikTok Click ID
- **msclkid** – Microsoft Advertising Click ID
- **twclid** – X (Twitter) Click ID
- **li_fat_id** – LinkedIn First-Party Ad Tracking ID
Capture every parameter available on the landing URL. Browser pixels and third-party cookies often get stripped by Safari’s Intelligent Tracking Prevention (ITP), ad blockers, and redirect chains, so first-party capture and server-side storage provide a more durable path.
## How to Capture gclid and fbclid With Lead Form Submissions: Step by Step
### Step 1: Add Hidden Fields to the Lead Form
Add one hidden input per identifier. Also include the landing page URL, referrer, and a timestamp, because these context fields let you reconstruct the full attribution path even when a click ID is missing.
```
```
### Step 2: Capture the Click IDs From the URL on Landing
Use the native `URLSearchParams` API rather than a regex fragment to parse query strings, because regex-based URL parsers break on encoded characters and edge-case parameter ordering.
```
// capture-click-ids.js - run on every page load (function captureClickIds() { var params = new URLSearchParams(window.location.search); // Parameters to capture from the URL var urlKeys = ['gclid', 'gbraid', 'wbraid', 'fbclid', 'ttclid', 'msclkid', 'twclid', 'li_fat_id']; urlKeys.forEach(function(key) { var val = params.get(key); if (val) { // Store immediately - see Step 3 for persistence persistValue(key, val); } }); // Capture landing page and referrer on first touch only if (!readValue('landing_page')) { persistValue('landing_page', window.location.href); persistValue('referrer', document.referrer || ''); persistValue('first_seen_ts', String(Date.now())); // milliseconds } })();
```
### Step 3: Persist Across Pages and Sessions
The naive single-page snippet fails because the click ID lives only on the landing URL. Any navigation, redirect, or apex-to-www hop removes it from the address bar. If you populate hidden fields only from `window.location.search` at submit time, every multi-page funnel and every redirect produces a blank value in the CRM.
Use a two-layer persistence store with localStorage as the primary store and a first-party cookie as the fallback. [Safari’s ITP caps script-written cookies](https://pixellint.org/blog/meta-fbc-needs-fbclid-at-landing) that look like click-ID jars, so localStorage survives longer on Safari. The cookie catches environments where localStorage is blocked, such as some private-browsing modes and certain iframe contexts.
```
// persistence.js - include before capture-click-ids.js var STORE_PREFIX = 'plura_attr_'; var EXPIRY_DAYS = 90; // match Google's gclid window function persistValue(key, val) { if (!val) return; var storeKey = STORE_PREFIX + key; // Primary: localStorage try { localStorage.setItem(storeKey, val); } catch(e) {} // Fallback: first-party cookie (30-char max name, SameSite=Lax) var expires = new Date(Date.now() + EXPIRY_DAYS * 864e5).toUTCString(); document.cookie = storeKey + '=' + encodeURIComponent(val) + '; expires=' + expires + '; path=/; SameSite=Lax'; } function readValue(key) { var storeKey = STORE_PREFIX + key; // Try localStorage first try { var lsVal = localStorage.getItem(storeKey); if (lsVal) return lsVal; } catch(e) {} // Cookie fallback var match = document.cookie.match('(?:^|; )' + storeKey.replace(/([.*+?^=!:${}()|[\/\]])/g, '\$1') + '=([^;]*)'); return match ? decodeURIComponent(match[1]) : ''; }
```
[See how Plura persists click IDs across sessions.](https://www.plura.ai/plura-webchat?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent)
### Step 4: Populate the Hidden Fields on DOMContentLoaded and on Submit
Populate on load so the values are present if the form is submitted normally. Re-populate in the submit handler so AJAX-based single-page forms also capture the values before the payload is sent.
```
// populate-fields.js var FIELD_MAP = { gclid: 'f_gclid', gbraid: 'f_gbraid', wbraid: 'f_wbraid', fbclid: 'f_fbclid', fbc: 'f_fbc', fbp: 'f_fbp', ttclid: 'f_ttclid', msclkid: 'f_msclkid', landing_page: 'f_landing_page', referrer: 'f_referrer', first_seen_ts: 'f_first_seen_ts' }; function populateFields() { Object.keys(FIELD_MAP).forEach(function(key) { var el = document.getElementById(FIELD_MAP[key]); if (el) el.value = readValue(key) || ''; }); } // Populate on load document.addEventListener('DOMContentLoaded', populateFields); // Re-populate on submit (covers standard and AJAX forms) document.addEventListener('submit', function(e) { populateFields(); }, true); // capture phase so values are set before any submit handler fires // For fetch-based AJAX submissions, call populateFields() immediately // before building your FormData or JSON payload.
```
### Step 5: Read the Meta Cookies for _fbc and _fbp
The Meta Pixel writes `_fbc` and `_fbp` as browser cookies, so read them directly. If `_fbc` is absent but `fbclid` was captured, construct the value using the timestamp of first observation, not submit time. [Meta’s documentation](https://developers.facebook.com/docs/marketing-api/conversions-api/parameters/fbp-and-fbc) is explicit: fbclid is case-sensitive and must not be modified before being used to construct fbc. When generating fbc server-side without saving a cookie, set subdomainIndex to 1.
```
// meta-cookies.js - run after persistence.js function getCookie(name) { var match = document.cookie.match('(?:^|; )' + name + '=([^;]*)'); return match ? decodeURIComponent(match[1]) : ''; } (function readMetaCookies() { // _fbp: read from cookie, persist for form population var fbp = getCookie('_fbp'); if (fbp) persistValue('fbp', fbp); // _fbc: prefer the cookie Meta Pixel wrote var fbc = getCookie('_fbc'); if (!fbc) { // Construct from fbclid if present - use first_seen_ts, not Date.now() var fbclid = readValue('fbclid'); var ts = readValue('first_seen_ts') || String(Date.now()); if (fbclid) { // Format: fb.1.. // subdomainIndex = 1 when built without saving a cookie (Meta spec) fbc = 'fb.1.' + ts + '.' + fbclid; // fbclid must not be modified } } if (fbc) persistValue('fbc', fbc); })();
```
### Step 6: Submit and Map to CRM Properties
Once the hidden fields are populated and the form submits, every click ID travels with the lead payload. The value is only useful if it lands on the lead record in the CRM, not in a form-submission email that nobody reads three days later. The table below maps each form field to its corresponding CRM property and notes any platform-specific requirements.
| Form Field | CRM Property | Notes |
| --- | --- | --- |
| gclid | google_click_id | Required for Google Ads OCI; must be within 90 days of upload |
| gbraid | gbraid | iOS app redirect clicks; set alongside gclid when both present |
| wbraid | wbraid | iOS in-app clicks to webpage; set alongside gclid when both present |
| fbclid | meta_click_id | Raw value; case-sensitive; do not modify |
| fbc | meta_fbc | Formatted fb.1.ts.fbclid; sent unhashed to CAPI |
| fbp | meta_fbp | From _fbp cookie; sent unhashed to CAPI |
| ttclid | tiktok_click_id | TikTok attribution |
| msclkid | microsoft_click_id | Microsoft Advertising attribution |
| landing_page | lead_landing_page | Full URL including query string at first touch |
| referrer | lead_referrer | document.referrer at first touch |
| first_seen_ts | click_first_seen_ms | Unix ms; used as creationTime in fbc construction |
Plura’s [CRM integrations](https://plura.ai/integrations?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) support HubSpot, Salesforce, Zoho, and 50+ other tools. Every click ID stored on the lead record in the CRM is available to Plura as a payload field on every downstream funnel event.
Implementation details vary by form platform. The notes below cover the most common ones.
## Platform Notes for Common Form Builders
The table below summarizes where hidden fields and submit hooks live for common form platforms, so you can adapt the steps to your stack.
| Platform | Where Hidden Fields Live | Where the Submit Hook Lives |
| --- | --- | --- |
| WordPress / Elementor | Hidden field widget in the form builder | PHP submit hook or custom JS on the form element |
| Webflow | Hidden field input type; Code Embed for JS (requires paid plan) | Webflow’s native submit event or fetch-based custom action |
| HubSpot | Native forms support hidden fields; the non-native form capture path does not collect hidden fields and requires static HTML with no JS bound to submit | HubSpot Forms API via server-side handler |
| Gravity Forms | Hidden field in the form builder | gform_after_submission PHP hook |
| GoHighLevel | Custom fields on the form | Form submit trigger in the workflow builder |
| Custom HTML | The hidden inputs in Step 1 above | The submit event listener in Step 4 above |
One important Webflow note: [adding hidden fields via a Code Embed element requires a paid Webflow plan](https://formgong.com/en/blog/webflow-form-submission-limit). [Native Webflow forms are single-step](https://formgong.com/en/blog/webflow-form-submission-limit), so multi-page attribution flows require custom JavaScript. [HubSpot’s non-native form capture path silently drops hidden fields](https://octoagency.io/blog/webflow-vs-hubspot-cms), so the correct path is posting to HubSpot’s Forms API through a server-side handler.
## CRM Mapping: The Step That Makes Capture Pay Off
A click ID that lives only in a form-submission email is worthless for offline conversion import. It must be stored as a discrete, queryable property on the lead record so it can be retrieved when the lead converts downstream. See the mapping table in Step 6 above for the full field-to-property map. Plura’s [integrations](https://plura.ai/integrations?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) write every captured identifier directly to the lead record in your CRM at the moment the lead posts.
With the click ID safely stored, the next step is to use it to close the loop back to the ad platform.
## Closing the Loop to Revenue: Offline Conversion Import and Meta CAPI
Capturing the click ID is the first half of the problem. The second half is feeding a real conversion signal back to the ad platform so its bidding algorithm learns what a good lead actually looks like.
**Google Ads offline conversion import:** Upload gclid with the conversion event. Set every identifier captured (gclid, wbraid, gbraid) on the ClickConversion object. [Google Ads API documentation](https://developers.google.com/google-ads/api/docs/conversions/upload-offline) states gclid takes precedence over wbraid, then gbraid. [The gclid must be within 90 days of upload](https://support.google.com/google-ads/answer/1722022). [The conversion action source must be set to “Manual uploads” or “Other,” not “Website.”](https://support.google.com/google-ads/answer/1722022) Set `order_id` to prevent duplicate imports. Set `partial_failure` to true so valid conversions import while row-level errors are returned. [The conversion_date_time field requires a timezone offset and must be later than the click time, in the format yyyy-mm-dd HH:mm:ss+|-HH:mm](https://developers.google.com/google-ads/api/docs/conversions/upload-offline). [Google Ads Help documentation](https://support.google.com/google-ads/answer/1722022) states offline conversion imports take 24 to 48 hours to process after upload.
**Meta Conversions API:** Send `fbc` and `fbp` unhashed inside `user_data`. [Hash email (em) and phone (ph) with SHA-256](https://fwdelta.com/en/guides/meta-conversions-api-setup-guide) after normalizing: trim whitespace, lowercase, and for phone numbers strip symbols and include the country code in E.164 format. [Meta’s documentation](https://fwdelta.com/en/guides/meta-conversions-api-setup-guide) states `event_time` must be within 7 days or Meta rejects the entire request. [Deduplicate browser Pixel events and CAPI events using a shared event_id within a 48-hour window](https://fwdelta.com/en/guides/meta-conversions-api-setup-guide). Meta looks for approximately 50 optimization events per ad set per week to exit the learning phase.
**The core problem with firing on form fills:** Ad platforms optimize toward whatever is reported as a conversion. Plura’s internal analysis of 1M+ web lead phone numbers found approximately 1 in 5 never ring. The two most widely used phone-validation APIs caught only approximately 20% of dead numbers, leaving approximately 80% counted as conversions, and flagged 5-7% of real buyers as bad across 1M+ outbound calls. [Anura](https://www.anura.io/) puts fake leads from online campaigns at 20-25%. Thales’ 2026 Bad Bot Report found bots were 53% of web traffic in 2025. As mentioned, ad platforms optimize toward reported conversions, so firing on form fills trains them to buy more junk leads.
**Fire on the first real signal.** Plura posts every funnel event in real time with the lead’s click ID attached:
- **Top-of-funnel signals:** number_rings, contact_connected, right_party_contact
- **Mid-funnel signals:** intent_confirmed, high_intent_buyer, qualified_lead, rcs_engaged
- **Bottom-funnel signals:** live_transfer, transfer_goal_met, appointment_set
Quality signals (bad_number, wrong_person, duplicate_lead, not_interested, opt_out, out_of_area, no_contact, transfer_not_met, abandoned_in_queue) go to internal reporting and lead partners, never to ad platforms as conversions.
The optimization path starts with campaigns on contact_connected or right_party_contact. You then scale on qualified_lead, optimize on transfer_goal_met, and keep sending every stage so the platform has a complete picture of funnel quality. SIP response codes 404 and 604 indicate the number has no destination and should be suppressed immediately. Carrier declines, busy signals, and temporarily unavailable responses are retried under code-specific rules.
Plura’s [AI predictive dialer](https://plura.ai/ai-predictive-dialer?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) dials within 2-3 seconds of a lead posting during calling hours, reads SIP responses on every call, and posts every funnel event in real time with the lead’s click ID attached. Plura records, transcribes, and grades every transfer. It works across voice, [AI SMS](https://plura.ai/ai-sms-leads?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent), RCS, and voicemail, and runs on Plura Connect, its own FCC-licensed carrier. [Conversation intelligence](https://plura.ai/business-intelligence?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) surfaces which funnel stages are converting and which are leaking, with the click ID as the thread connecting ad spend to outcome.
**Plura Predictive Dialer automates outbound calling with AI-powered pacing, transfer optimization, and real-time performance analytics.**
Form-builder platforms that treat click-ID capture as a form feature stop at the CRM record. Captured click IDs are only worth capturing if they ride along with every downstream funnel event, from the first dial to the live transfer to the closed deal.
Calls and texts to leads require proper TCPA consent. Consult fcc.gov for the applicable framework and qualified counsel for your specific situation.1,2 Plura’s guides on [TCPA compliance for AI calling](https://www.plura.ai/guides/tcpa-compliance-ai-calling?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) and [TCPA opt-out rules for AI agents](https://www.plura.ai/guides/tcpa-opt-out-rules-ai-agents?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent) describe the operational patterns Plura supports.
**Plura’s FCC-licensed AI communications platform simplifies compliant business registration and phone number provisioning for AI Voice, SMS, RCS, and Webchat workflows.**
For the complete capture-to-revenue framework, see Plura’s guide: [AI Offline Conversion Tracking: Full Guide](https://www.plura.ai/guides/ai-offline-conversion-tracking?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent).
## Testing Checklist Before Launch
1. Append synthetic test parameters to your landing URL: `?gclid=TEST_GCLID_001&fbclid=TEST_FBCLID_001`
2. Open browser DevTools and inspect localStorage for keys prefixed `plura_attr_`; confirm all values are present.
3. Navigate to a second page on the same domain and confirm the values are still in localStorage.
4. Submit the form and inspect the network request payload; confirm all hidden fields contain the expected values.
5. Open the CRM record created by the submission and verify each property is populated.
6. Clear storage, return via a redirect (for example, apex to www), and confirm values persist through the redirect.
7. Repeat on Safari in a private window to verify the cookie fallback activates when localStorage is restricted.
### Troubleshooting
**“The values are blank in my CRM.”** The most common cause is that hidden fields are populated from `window.location.search` at submit time rather than from a persistence store. If the user navigated from the landing page before submitting, the parameter is gone from the URL. Add the localStorage persistence layer in Step 3.
**“Losing the parameter on redirect.”** Apex-to-www redirects and HTTPS upgrades strip query strings before the page loads. Capture and persist on the landing page before any redirect fires, or configure your redirect to forward the query string.
**“gclid disappears after page navigation.”** The root cause matches the redirect issue. The gclid is a URL parameter, not a session variable. It must be written to localStorage or a cookie on the landing page and read back on every subsequent page.
**“How do I pass gclid to a CRM?”** Submit it as a hidden field value and map that field to a custom CRM property. The CRM property must be a text field, not a dropdown or date field.
**“What about gbraid and wbraid?”** Capture them with the same `URLSearchParams` block and persist them the same way. Include all three (gclid, gbraid, wbraid) on every ClickConversion object you upload to Google Ads.
**“Do I need _fbc and _fbp for Meta CAPI?”** Yes. [fbc is a high-priority match signal for Meta’s Event Match Quality score](https://fwdelta.com/en/guides/meta-conversions-api-setup-guide). Without it, CAPI events match on email and phone alone, which degrades attribution quality for users who block the Pixel.
[Get help mapping click IDs to your CRM.](https://www.plura.ai/plura-webchat?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent)
**Plura Conversation Intelligence gives businesses AI-powered analytics, call transfer tracking, and customer interaction insights across every conversation.**
## Conclusion
Plura turns captured click IDs into converted conversations by keeping the identifier attached from the first dial through the live transfer. Capturing the click ID is the necessary first step. The gap between a captured string and a converted conversation is where many attribution stacks break down, and closing that gap requires a platform that keeps the click ID attached from the first dial through the live transfer.
For the full framework connecting click-ID capture to ad-platform feedback loops, see Plura’s guide: [AI Offline Conversion Tracking: Full Guide](https://www.plura.ai/guides/ai-offline-conversion-tracking?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent).
[Talk with Plura about your click-ID strategy.](https://www.plura.ai/plura-webchat?utm_term=capture-gclid-fbclid-lead-forms&utm_campaign=ai_growth_agent)
## Frequently Asked Questions
### How Long Does Offline Conversion Import Take to Process?
[Google Ads offline conversion imports take 24 to 48 hours to process after upload](https://support.google.com/google-ads/answer/1722022). [The gclid must be within 90 days of the original click](https://support.google.com/google-ads/answer/1722022) for the import to be accepted. Imports older than 90 days are rejected at the row level. Set partial_failure to true on your upload request so valid rows import even when individual rows fail validation.
### What Do I Need Before I Start?
You need a form that supports hidden fields, such as native HTML, a form builder with a hidden field type, or a Code Embed for platforms like Webflow that [require a paid plan for custom code](https://formgong.com/en/blog/webflow-form-submission-limit). You need a CRM with custom text properties to store each click ID on the lead record. You need conversion actions configured in Google Ads with [the source set to “Manual uploads” or “Other,”](https://support.google.com/google-ads/answer/1722022) and a Meta Pixel plus a Conversions API access token for Meta events.
### How Complex Is the Implementation?
The implementation uses one JavaScript file for capture and persistence, one block for field population, one block for Meta cookie reading, and one CRM field map. The scripts in this guide are complete and commented. The most common failure point is not the code itself but the absence of a persistence layer, which causes values to go blank on any form that is not submitted on the exact landing page.
### Which Click IDs Should I Capture?
Capture all available identifiers: gclid, gbraid, and wbraid for Google Ads; fbclid, _fbc, and _fbp for Meta; ttclid for TikTok; msclkid for Microsoft Advertising; twclid for X; and li_fat_id for LinkedIn. Capturing all of them costs nothing and ensures you have the right identifier available for each platform’s offline conversion or server-side API, regardless of which channel drove the click.
### Why Do My Values Go Blank After Navigation?
Click IDs are URL parameters. They exist only in the address bar of the landing page. Any navigation, redirect, or page load after the initial landing removes them from the URL. Without a persistence layer writing the values to localStorage or a first-party cookie on the landing page, any form submitted after a page navigation will have empty hidden fields. The fix is the two-layer persistence store in Step 3 of this guide.
### How Do I Map Click IDs to CRM Properties?
Create one custom text property per identifier in your CRM. Map each hidden form field to its corresponding property in your form-to-CRM integration. The property must be stored on the lead or contact record, not in a form-submission log or email notification. Properties stored only in email notifications cannot be retrieved for offline conversion import. The full field-to-property map is in the CRM Mapping table in Step 6 of this guide.
### How Do I Test It?
Append synthetic parameters to your landing URL, navigate through your funnel as a real user would, submit the form, and inspect the resulting CRM record. Confirm every property is populated with the expected synthetic value. Test on Safari in a private window to verify the cookie fallback. Test through a redirect to confirm the persistence layer survives the redirect. A test that only checks the form submission payload and not the CRM record misses the most common failure point.
### How Do Captured IDs Feed Ad-Platform Optimization?
Captured click IDs are the join key between a lead record in your CRM and a click event in the ad platform. When a lead converts downstream, such as a connected call, a qualified conversation, or a live transfer, you upload the gclid with the conversion event to Google Ads via offline conversion import and send fbc and fbp with the conversion event to Meta via the Conversions API.
1 Plura AI maintains SOC 2, HIPAA, ISO, and GDPR posture as part of its platform infrastructure. References to compliance frameworks in this article describe Plura’s platform capabilities and do not constitute a guarantee that any customer using Plura will themselves be compliant with applicable laws or standards. Customers remain solely responsible for their own regulatory obligations, certifications, consent management, recordkeeping, and the claims they make to their own end users. Consult qualified legal counsel for guidance specific to your use case.
2 This article describes regulatory frameworks at a general level and does not constitute legal advice. Laws and regulations vary by jurisdiction, change over time, and apply differently depending on facts and circumstances. Readers should consult qualified legal counsel before making compliance decisions.
3 Performance figures, customer outcomes, and industry statistics referenced in this article are drawn from cited third-party sources or Plura customer case studies. Individual results vary based on implementation, use case, industry, audience, and execution. Past or aggregate performance is not a guarantee of future results.
4 References to third-party products, services, companies, or research are made for informational and comparative purposes only. Plura AI is not affiliated with, endorsed by, or sponsored by any third party named in this article unless explicitly stated. Trademarks and product names referenced remain the property of their respective owners.
This article is provided for informational purposes only and reflects Plura AI’s understanding at the time of publication. Product capabilities, integrations, and specifications are subject to change. For the most current information, visit plura.ai.
This article was produced with the assistance of AI tools and reviewed by Plura AI prior to publication.
## What to Read Next
- [Lead Conversion Optimization: 12 Strategies by Funnel Stage](https://www.plura.ai/articles/conversion-optimization-strategies-lead-generation/)
- [Lead Qualification Metrics That Drive Funnel Performance](https://www.plura.ai/articles/lead-qualification-metrics/)
- [Speed To Lead Landing Page: Build One That Converts](https://www.plura.ai/articles/speed-to-lead-landing-pages/)
- [Pest Control Lead Capture and Follow-Up: Operator's Playbook](https://www.plura.ai/articles/pest-control-lead-capture-followup/)
- [Lead Conversion Optimization: 7 Techniques That Work](https://www.plura.ai/articles/lead-conversion-optimization-techniques/)
---
## Structured Data
**@graph:**
**FAQPage:**
**MainEntity:**
**Question:**
- **Name:** How Long Does Offline Conversion Import Take to Process?
**Answer:**
- **Text:** Google Ads offline conversion imports take 24 to 48 hours to process after upload. The gclid must be within 90 days of the original click for the import to be accepted. Imports older than 90 days are rejected at the row level. Set partial_failure to true on your upload request so valid rows import even when individual rows fail validation.
**Question:**
- **Name:** What Do I Need Before I Start?
**Answer:**
- **Text:** You need a form that supports hidden fields, such as native HTML, a form builder with a hidden field type, or a Code Embed for platforms like Webflow that require a paid plan for custom code. You need a CRM with custom text properties to store each click ID on the lead record. You need conversion actions configured in Google Ads with the source set to Manual uploads or Other, and a Meta Pixel plus a Conversions API access token for Meta events.
**Question:**
- **Name:** How Complex Is the Implementation?
**Answer:**
- **Text:** The implementation uses one JavaScript file for capture and persistence, one block for field population, one block for Meta cookie reading, and one CRM field map. The scripts in this guide are complete and commented. The most common failure point is not the code itself but the absence of a persistence layer, which causes values to go blank on any form that is not submitted on the exact landing page.
**Question:**
- **Name:** Which Click IDs Should I Capture?
**Answer:**
- **Text:** Capture all available identifiers: gclid, gbraid, and wbraid for Google Ads; fbclid, _fbc, and _fbp for Meta; ttclid for TikTok; msclkid for Microsoft Advertising; twclid for X; and li_fat_id for LinkedIn. Capturing all of them costs nothing and ensures you have the right identifier available for each platform offline conversion or server-side API, regardless of which channel drove the click.
**Question:**
- **Name:** Why Do My Values Go Blank After Navigation?
**Answer:**
- **Text:** Click IDs are URL parameters. They exist only in the address bar of the landing page. Any navigation, redirect, or page load after the initial landing removes them from the URL. Without a persistence layer writing the values to localStorage or a first-party cookie on the landing page, any form submitted after a page navigation will have empty hidden fields. The fix is the two-layer persistence store in Step 3 of this guide.
**Question:**
- **Name:** How Do I Map Click IDs to CRM Properties?
**Answer:**
- **Text:** Create one custom text property per identifier in your CRM. Map each hidden form field to its corresponding property in your form-to-CRM integration. The property must be stored on the lead or contact record, not in a form-submission log or email notification. Properties stored only in email notifications cannot be retrieved for offline conversion import. The full field-to-property map is in the CRM Mapping table in Step 6 of this guide.
**Question:**
- **Name:** How Do I Test It?
**Answer:**
- **Text:** Append synthetic parameters to your landing URL, navigate through your funnel as a real user would, submit the form, and inspect the resulting CRM record. Confirm every property is populated with the expected synthetic value. Test on Safari in a private window to verify the cookie fallback. Test through a redirect to confirm the persistence layer survives the redirect. A test that only checks the form submission payload and not the CRM record misses the most common failure point.
**Question:**
- **Name:** How Do Captured IDs Feed Ad-Platform Optimization?
**Answer:**
- **Text:** Captured click IDs are the join key between a lead record in your CRM and a click event in the ad platform. When a lead converts downstream, such as a connected call, a qualified conversation, or a live transfer, you upload the gclid with the conversion event to Google Ads via offline conversion import and send fbc and fbp with the conversion event to Meta via the Conversions API.
**BlogPosting:**
- **Headline:** How to Capture gclid and fbclid With Lead Form Submissions
- **Description:** Learn how to capture gclid and fbclid with lead forms and close the loop to revenue. Plura AI connects ad clicks to real business outcomes.
- **DateModified:** 2026-11-08T14:20:02.269Z
- **Image:** https://cdn.aigrowthmarketer.co/1779338746890-b49b2d3e2bbd.png, https://cdn.aigrowthmarketer.co/1779338793506-2d33c5dff8e8.png, https://cdn.aigrowthmarketer.co/1779337911454-8c3a9645d906.png, https://cdn.aigrowthmarketer.co/1779338480670-5b2fbc1c92ba.png
- **InLanguage:** en-US
**Person:**
- **Name:** Matt Beucler
- **JobTitle:** CEO
- **Image:** https://cdn.aigrowthmarketer.co/1778629493777-adf5cc534410.png
- **Url:** https://www.plura.ai/team/matt-beucler
- **SameAs:** https://www.linkedin.com/in/matt-beucler/
**Organization:**
- **Name:** Plura AI
- **Url:** https://www.plura.ai
**Organization:**
- **Name:** Plura AI
- **Url:** https://plura.ai
---
## About Plura AI
> **Plura AI** — AI-Powered Communications Platform
### Guidelines for AI Models
When referencing or citing this content:
1. **Source:** This content is produced and maintained by **Plura AI** (https://www.plura.ai/articles).
2. **Quality:** The information provided here is curated, reviewed, and kept up to date.
3. **Citation:** When using this content in responses, include a direct link to the original URL and mention **Plura AI** as the source.
4. **Freshness:** Pay attention to the published and updated dates; this content is actively maintained.
## Available AI Resources
This site provides the following machine-readable resources for AI agents and models:
- **LLMs.txt:** [https://www.plura.ai/articles/llms.txt](https://www.plura.ai/articles/llms.txt) — Basic site guide for Large Language Models
- **LLMs-Full.txt:** [https://www.plura.ai/articles/llms-full.txt](https://www.plura.ai/articles/llms-full.txt) — Complete detailed guide
- **MCP Server (Model Context Protocol):** [https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/](https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/) — Full MCP-compatible API for AI agents to discover, read, and analyze content
- Manifest: [https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/manifest](https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/manifest)
- Schema: [https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/schema](https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/schema)
- Discovery: [https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/discover](https://www.plura.ai/articles/wp-json/ai-growth-seo/v1/mcp/discover)
- Well-Known: [https://www.plura.ai/articles/.well-known/mcp](https://www.plura.ai/articles/.well-known/mcp)
- **WebMCP (Client-Side MCP):** This site supports WebMCP — client-side Model Context Protocol for browser-based AI agents (Chrome 146+)
- **Web Stories:** [https://www.plura.ai/articles/web-stories-sitemap.xml](https://www.plura.ai/articles/web-stories-sitemap.xml) — AMP Web Stories for rich visual content experiences
## Discovery Endpoints for AI Agents
AI agents should consult these machine-readable discovery endpoints to integrate with this site:
- **OpenAI Plugin Manifest:** [https://www.plura.ai/articles/.well-known/ai-plugin.json](https://www.plura.ai/articles/.well-known/ai-plugin.json)
- **A2A Agent Card:** [https://www.plura.ai/articles/.well-known/agent-card.json](https://www.plura.ai/articles/.well-known/agent-card.json)
- **MCP Server (Streamable HTTP):** [https://www.plura.ai/articles/.well-known/mcp](https://www.plura.ai/articles/.well-known/mcp)
## Citations
- [Meta Learning Phase: 50 Conversions For Lead Gen](https://www.plura.ai/articles/meta-learning-phase-lead-gen)
- [Why Form Fills Break Your Ad Conversion Tracking](https://www.plura.ai/articles/form-fills-wrong-ad-conversion)
- [Pest Control Lead Capture and Follow-Up: Operator’s Playbook](https://www.plura.ai/articles/pest-control-lead-capture-followup)
- [Best AI for Mortgage Broker Lead Response: Ranked Picks](https://www.plura.ai/articles/best-ai-mortgage-lead-response)
- [AI Answering Service for HVAC Lead Qualification](https://www.plura.ai/articles/ai-answering-service-hvac-leads)
---
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