Which parameters are mandatory in Google Analytics 4 Campaign URL Builder?

For proper GA4 attribution, your Destination URL and utm_source are strictly required. While utm_medium and utm_campaign are technically optional in the HTTP query string, GA4 requires utm_medium to place traffic into Default Channel Groups like Paid Search or Email; without it, sessions fall into (Unassigned).

Does this tool support GA4's utm_id parameter?

Yes. utm_id identifies the specific campaign ID and allows you to upload cost data, impressions, and clicks via GA4 Data Import or sync with Google Ads, Meta Ads, and CRM platforms.

Why does my campaign traffic show as (Unassigned) in GA4 reports?

GA4 uses strict regex rules to categorize traffic. If your utm_medium uses non-standard terms (such as 'cpc-ads', 'social_post', or uppercase 'EMAIL'), GA4 cannot map it to a standard channel and labels it (Unassigned). This tool audits your parameters in real time to prevent this error.

Campaign URL Builder for Google Analytics 4

Q: How is this Campaign URL Builder different from Google's official DevSite tool?

Core URL generation and auditing run in your browser. Optional shortening sends the generated URL to a public shortening provider. The tool also provides GA4 channel scoring, QR export, bulk generation, and lowercase sanitization.

Destination URL *

Paste your destination URL

⚠️ Please enter a valid URL (e.g. https://domain.com/path)

Quick fill:

Campaign Source * utm_source

Source is required for GA4 attribution.

Campaign Medium * utm_medium

Medium is required (e.g. cpc, email, social).

Campaign Name * utm_campaign

Optional Parameters Term, Content & ID 0 filled

Campaign Term utm_term (optional)

Campaign Content utm_content (optional)

Campaign ID utm_id (GA4 campaign identifier)

Advanced Custom Tags & Formatting Standard

Dynamic & Custom Query Parameters

Sanitization & Formatting Options

lowercase delimiter: - https:// strip utms

UTM Parameter Formatting Standardizes source, medium, campaign, term, content, and campaign ID

Auto Lowercase (GA4 Best Practice)

Converts UTM values to lowercase. GA4 is strictly case-sensitive and splits "Email" vs "email".

Space Replacement Delimiter:

Preview: summer-sale-2025

Destination URL Normalization Controls destination web link protocol and query string deduplication

Auto Prepend https://

Prepends secure HTTPS protocol if missing from the destination URL.

Strip Existing UTMs from URL

Removes conflicting utm_* parameters already present in pasted target links.

Apply Settings to Input Fields Apply your active formatting rules directly into the form fields above

Auto-clean fields on blur (format inputs when leaving field)

LIVE PREVIEW

Generated Campaign URL

Real-time normalized URL with syntax highlighting & validation.

Ready

Your tracked URL will appear here in real-time...

0 chars Standard limit < 2048 chars

GA4 Compatibility 100 / 100

Want to verify in GA4? How to check in GA4 →

DISTRIBUTION

Mobile QR Code

High-resolution vector SVG and PNG for print & outdoor media.

Preview (Blurred)

Instant high-res SVG & PNG

UTMCraft vs. Google’s Official Campaign URL Builder

For over a decade, digital marketers relied on Google's standard DevSite Campaign URL Builder. While functional for single links, it was built in the Universal Analytics era and lacks the intelligence required for modern Google Analytics 4 (GA4) attribution pipelines. Below is a feature-by-feature comparison:

Feature / Capability	Google Classic URL Builder	UTMCraft Studio
Client-Side Execution	Logs input parameters on Google servers	100% In-Browser & Zero Tracking
GA4 Channel Validation	No validation (causes Unassigned traffic)	Live Real-Time GA4 Rule Auditor
Automatic Casing Sanitizer	Manual (leads to fractured reporting)	Auto-Lowercase & Hyphen Normalization
Link Shortening	Disabled (bit.ly integration deprecated)	Built-in 1-Click Shortener with Fallbacks
Vector QR Code Generation	Not available	Instant High-Contrast SVG & PNG Export
Multi-Channel Bulk Matrix	Not available (requires external spreadsheets)	Built-in Multi-Channel Matrix & CSV Export
Ad Platform Dynamic Macros	Manual typing required	1-Click Meta & Google ValueTrack Tokens

💡 Why Universal Analytics Practices Break GA4

Universal Analytics (UA) was forgiving of mixed casing and non-standard mediums like medium=social-media or medium=email-blast. GA4 enforces rigid regular expression rules: if your medium does not strictly match its regex dictionary, your entire campaign session is assigned to (Unassigned), permanently breaking attribution models.

Google Analytics 4 Campaign Parameters: Core & Additional Parameters

GA4 supports 9 manual campaign parameters: six commonly used/core parameters plus three additional GA4 parameters. Some newer parameters currently have reporting limitations. Google documents the traditional manual parameters plus utm_source_platform, utm_creative_format, and utm_marketing_tactic; Google also separately documents and recommends utm_id. Google notes that utm_creative_format and utm_marketing_tactic are not currently reported in GA4 properties.

Below are the six core parameters commonly used in URL builders, followed by GA4's three additional campaign parameters:

Parameter	Classification	Required	GA4 Dimension	Primary Use Case & Reporting Status
`utm_source`	Core Parameter	Yes	Session source / First user source	Identifies the referrer or platform driving the user. Reported in all standard reports.
`utm_medium`	Core Parameter	Recommended	Session medium / First user medium	Determines the marketing channel grouping in GA4. Required for channel grouping.
`utm_campaign`	Core Parameter	Recommended	Session campaign / First user campaign	Names the specific product initiative, promotion, or theme. Reported in all standard reports.
`utm_id`	Core Parameter	Recommended	Campaign ID / Session campaign ID	Recommended by Google to match and upload offline cost data via GA4 Data Import.
`utm_term`	Core Parameter	Optional	Session manual ad term	Tracks paid search keywords or specific audience segment targeting.
`utm_content`	Core Parameter	Optional	Session manual ad content	Differentiates creative variants, banner sizes, or copy variations for A/B testing.
`utm_source_platform`	Additional GA4 Parameter	Optional	Manual source platform	Identifies the sending platform interface (e.g. Search Ads 360, Google Ads). Available in reports & BigQuery.
`utm_creative_format`	Additional GA4 Parameter	Optional	Manual creative format	Identifies creative type (video, carousel). Reporting limitation: Google notes this is not currently reported in GA4 properties.
`utm_marketing_tactic`	Additional GA4 Parameter	Optional	Manual marketing tactic	Targeting strategy (prospecting, remarketing). Reporting limitation: Google notes this is not currently reported in GA4 properties.

How to Build & Deploy Campaign URLs: A 5-Step Process

Identify the Clean Destination URL: Ensure your target page is live, resolves with an HTTPS protocol, and does not trigger an internal redirect that strips query strings.

Apply Standardized Source & Medium: Always consult GA4 Default Channel Grouping rules. For paid social ads, use medium=paid_social; for Google Ads Search, use medium=cpc.

Name Your Campaign with Strict Conventions: Use lowercase text and hyphens to separate words. Example: brand-awareness-na-2025 instead of Brand Awareness (NA) 2025.

Differentiate Creatives with utm_content: If testing multiple images or ad copy angles in the same ad group, use utm_content=static_infographic vs utm_content=short_video.

Verify in GA4 Realtime Reports: Before launching high-budget campaigns, click your tagged URL in an incognito window and check Google Analytics 4 → Reports → Realtime to ensure your source and medium appear correctly under Session Source / Medium.

Frequently Asked Questions

How is this Campaign URL Builder different from Google's official DevSite tool?

Core URL generation and auditing run in your browser without storing campaign inputs in a UTMCraft account or database. If you choose the optional shortener, the generated URL is sent to a public shortening provider. The tool also adds GA4 channel scoring, QR export, bulk generation, and lowercase sanitization.

Which parameters are mandatory in Google Analytics 4?

For accurate attribution, your Destination URL and utm_source are strictly mandatory. However, without utm_medium, GA4 cannot classify your session into a Default Channel Group, causing the traffic to default to (Unassigned).

Does utm_id replace utm_campaign?

No. utm_id complements utm_campaign by providing an alphanumeric identifier that matches campaign IDs across ad platforms (such as Google Ads or Meta Ads Manager). It is especially valuable when importing external cost or revenue data into GA4.

Why should I never use UTM parameters on internal website links?

Campaign UTMs should not be used on internal navigation. GA4 does not start a new session when new campaign values appear, but it can associate those values with mid-session events and distort event-scoped attribution. Use internal-promotion events instead.

What happens if my destination page redirects (e.g. HTTP to HTTPS or non-www to www)?

Many web servers strip query parameters during 301 or 302 redirects unless specifically configured with a query string pass-through (QSA). Always ensure your destination URL matches the final canonical URL to prevent parameter loss.