Free UTM Parameter Generator

A UTM parameter generator turns a plain link into a tracked campaign URL. You paste the page, add a source, medium and campaign, and get one link that tells GA4 exactly which ad, email or post sent each visitor. This one is free, runs in your browser, asks for your email once to show results, and cleans up your naming so reports stay readable.

It’s built for marketers, founders and agencies who share links across several channels and then try to work out which ones produced leads.

Key takeaways

• Always fill utm_source, utm_medium and utm_campaign. GA4 shows missing values as "(not set)".
• UTM values are case sensitive. `LinkedIn` and `linkedin` become two rows in your report, so keep everything lowercase.
• Pick mediums GA4 recognizes (`cpc`, `paid-social`, `email`, `social`) so traffic lands in the right default channel.
• Don't tag Google Ads links if auto-tagging is on, and never tag links between your own pages.
• Keep a shared sheet of every link you build, so the whole team reuses the same names.

What the UTM parameter generator builds

UTM parameters are tags added after a ? in a URL. GA4 reads them when someone lands on your page and stores them as the session’s source, medium and campaign. Google’s Analytics Help page on campaign URLs lists nine parameters. This tool builds the five that almost every team uses:

Parameter	Required here	What it answers	Example
utm_source	Yes	Which site, platform or list sent the click?	linkedin, newsletter, google
utm_medium	Yes	What type of channel was it?	paid-social, email, cpc, social
utm_campaign	Yes	Which promotion or push?	q4-growth-audit
utm_term	No	Which paid keyword?	b2b-seo-agency
utm_content	No	Which ad, button or link inside the campaign?	carousel-v1

The other four (utm_id, utm_source_platform, utm_creative_format and utm_marketing_tactic) are for teams that upload cost data or use buying platforms. Google notes that the last two aren’t currently reported in Analytics. If you need utm_id, add it to the copied link by hand.

• 9 campaign URL parameters GA4 documents, from utm_source to utm_marketing_tactic Google Analytics Help, 2026
• 19 default channels GA4 can sort your traffic into, from Paid Social to AI Assistant Google Analytics Help, 2026

How it works

Everything happens in your browser. When you press Build my URL, the tool:

1. Checks the address. It accepts example.com/page/ or a full https:// URL. If you leave off the protocol, it adds https://. It rejects anything that isn’t a web address with a proper domain.
2. Tidies your values (when the box is ticked, which is the default). It trims spaces at the ends, lowercases the text, turns any run of spaces into a hyphen and collapses double hyphens. So Q4 Growth Audit becomes q4-growth-audit.
3. Keeps your existing query string. A ?ref=footer or ?plan=pro already on the URL stays where it is. If the URL already has a UTM tag, the new value replaces it and you get a note saying so.
4. Skips empty fields. If you leave term or content blank, that tag doesn’t appear in the link at all.
5. Flags common mistakes. With tidying off, it warns about spaces and capital letters in any value. It also warns when the page uses http://, and adds a note when you enter google or bing with medium cpc, because ad-platform auto-tagging may already cover those clicks.

You then get the full URL, a table of the parameters it set, and two copy buttons: Copy URL and Copy parameters only.

How to read your results

The tool doesn’t score your link. It gives you the link plus notes. Here’s what each note means and what to do:

What you see	What it means	What to do
No notes	The values are clean and the page uses https	Copy the link and log it in your tracking sheet
“contains spaces” (Improve)	A value has spaces, which show as %20 or + in reports	Turn on Tidy values, or use hyphens
“has capital letters” (Improve)	GA4 will treat this as a separate value from the lowercase version	Lowercase it, unless you’re matching an existing convention exactly
“The page uses http://” (Improve)	The redirect to https can lose referral information	Use the https version of the page
“Replaced an existing utm_…” (Note)	The pasted URL already had that tag	Check you meant to overwrite it
“Auto-tagging may already cover this” (Note)	You tagged a Google or Microsoft Ads search click by hand	Check whether auto-tagging is on before using the link

A worked example

Say you’re promoting a growth audit with a LinkedIn carousel in Q4, and the link sits in your site footer too, so the URL already carries ?ref=footer. You type the values the way people naturally do:

• URL: techdella.com/growth-audit/?ref=footer
• Source: LinkedIn
• Medium: Paid Social
• Campaign: Q4 Growth Audit
• Content: carousel v1

With Tidy values on, the tool returns:

https://techdella.com/growth-audit/?ref=footer&utm_source=linkedin&utm_medium=paid-social&utm_campaign=q4-growth-audit&utm_content=carousel-v1

Four things happened. It added https://. It kept ref=footer. It lowercased the values and swapped spaces for hyphens. And it left out utm_term, because you didn’t fill it in.

Now check where this lands in GA4. Google’s default channel group rules put manual traffic in Paid Social when the source matches a list of social sites and the medium matches cp, ppc, retargeting or anything starting with paid. linkedin is a social source and paid-social starts with paid, so this traffic lands in Paid Social.

Change one value and the picture changes. With utm_medium=sponsored, the medium matches none of the paid patterns, so the visit can’t be Paid Social. Because linkedin is still a social source, GA4 files it under Organic Social instead, and the carousel’s leads get credited to your unpaid posts. That single word is the difference between a clean report and an argument about which channel worked.

When you test a second creative, change only utm_content to carousel-v2. In GA4, add Session manual ad content as a secondary dimension and compare the two.

Messy UTM tags are one of the first things I look for in a growth audit, because they quietly break every channel report that depends on them. Agree on the naming rules once, keep them in a shared sheet, and make the generator the only way links get built. It takes an afternoon to set up and saves endless arguments about which campaign worked.

UTM best practices for clean GA4 reports

Google’s own guidance boils down to one idea: pick a naming scheme and never break it. These are the rules we’d set before anyone builds a link.

Before you share a tagged link

• Lowercase every value. Google's help page says Meta and meta are treated as different values.
• Use one source name per platform (always `linkedin`, never `linkedin.com` one week and `li` the next).
• Use one medium per channel type: `cpc` or `paid-social` for paid, `email` for email, `social` for organic posts.
• Put the date or quarter in the campaign name, not in the source or medium.
• Use `utm_content` to separate ads, buttons or links inside one campaign.
• Test the link: open it, check the page loads, and check the tags survive any redirect.
• Log every link in a shared sheet with the date, owner and where it was posted.

A few channel-specific notes:

• Email. GA4 puts traffic in the Email channel when the source or medium is email, e-mail, e_mail or e mail. A medium of newsletter doesn’t qualify, so use utm_source=newsletter&utm_medium=email. If your email platform adds its own tags, check they follow the same scheme.
• Organic social. GA4 counts a visit as Organic Social when the source is a known social site, or the medium is one of social, social-network, social-media, sm, social network or social media. Use social for unpaid posts and keep paid-social for ads.
• Google Ads. Google’s auto-tagging help page says auto-tagging takes priority over manual tags in GA4. If it’s on, you usually don’t need UTMs on those ads at all.
• Ad platforms with URL parameters. Meta, LinkedIn and Google Ads let you add tracking parameters at the campaign or account level. Use Copy parameters only to paste the part after the ? into those fields.

If your tracking also feeds a CRM, the same discipline pays off there. Clean source and campaign values make marketing attribution far easier to trust, whichever attribution model you use.

Common UTM mistakes

Myth vs fact

MythMore UTM tags give you better data.

FactConsistent tags give you better data. Five tags with three spellings of the same source split one channel into three rows.

MythYou should tag every link, including links between your own pages.

FactTag only links that bring people in from outside. An internal tag relabels a visitor who arrived from search or email, so your own banner gets the credit.

MythGoogle Ads needs UTMs to show up in GA4.

FactAuto-tagging handles it. Google says auto-tagging takes priority over manual tags in GA4, so manual tags on those clicks are usually redundant.

Three more mistakes we see often:

• Putting UTMs on a URL that redirects. Some redirects drop the query string. Always link to the final URL.
• Using personal shorthand. fb, facebook and meta are three sources to GA4. Agree on one name per platform.
• Changing names mid-campaign. If you rename q4-launch to q4-launch-v2 halfway through, your report shows two half-campaigns. Use utm_content for variants instead.

Where to go next

If you run paid campaigns on LinkedIn, Meta or Google, our B2B paid ads guide covers how we compare those channels once the tracking is clean. If you want help with the setup itself, our paid ads team builds tracking and naming into every account, and our marketing automation work carries those UTM values into your CRM so sales can see where each lead came from.