Random vs Custom Slugs: Which Should You Use and When?

When you shorten a URL, there's a small decision to make: do you take the random string the tool generates, or do you type in your own custom ending? Most people don't think about it — they just grab whatever comes out. But the choice actually matters, and knowing when to use each one will make your links work better.

What is a random slug?

A random slug is the automatically generated code at the end of your short link — something like thelinkspot.com/xK92mP or thelinkspot.com/3fBpqR. The tool picks the characters, you don't choose anything.

Random slugs are designed to be short and unique. They don't clash with other links, they're generated instantly, and they require zero thought from you. That's genuinely useful in a lot of situations.

What is a custom slug?

A custom slug is one you choose yourself. Instead of the random code, you type something meaningful — like /summer-sale, /portfolio, or /job-application. The short link becomes thelinkspot.com/summer-sale, which anyone reading it can understand before they click.

Custom slugs take a few extra seconds to create, but they can do a lot of work for you — especially when the link is being seen by strangers, printed on paper, or used as part of a campaign you'll want to recognise later.

The core difference in one sentence

Random slugs are for getting a link out quickly when it doesn't need to be read or remembered. Custom slugs are for links that people will see, type, or that you want to be able to identify at a glance.

When a random slug is fine

There are plenty of situations where a random slug is perfectly adequate — even the better choice:

• You're sharing a link one-to-one — if you're sending a link directly to one person in a message, the ending of the URL is irrelevant. It's a hyperlink they'll click, not something they'll read or type.
• You need the link right now — if you're in a meeting, drafting a message under time pressure, or quickly uploading a file, the last thing you want to do is spend time thinking up a slug name.
• It's a temporary link — links to a Zoom call, a short-term discount, or a document that will be replaced soon don't need a memorable name.
• You're tracking a one-off campaign — if you're creating many different links for an A/B test or individual tracking purposes, random slugs keep things quick and prevent you from running out of good names.

When a custom slug is worth it

Custom slugs earn their keep in situations where the link itself is going to be seen, read, or used beyond a single click:

• Social media posts — on Twitter/X, LinkedIn, or Facebook, a link with a recognisable ending looks intentional and trustworthy. thelinkspot.com/free-ebook gets more clicks than thelinkspot.com/kR7mXa because people know what they're clicking before they do it.
• Printed materials — if a URL is going on a business card, flyer, poster, or product packaging, it has to be something a human can actually read and type. A random slug on a printed piece is almost useless.
• Email newsletters — your subscribers will see the link text in a plain-text client or hover preview. A slug that hints at the destination builds confidence. /march-offer is more clickable than /xT3bWq.
• Links you'll create more than once — if you regularly send people to a booking page, a portfolio, or a signup form, a custom slug like /book-a-call means you never have to look the link up again. You just remember it.
• Campaign tracking — if you want to look at your stats later and understand at a glance which link was for which campaign, a meaningful slug (/spring-launch) is far easier to read than a random string. More on this in our guide on how to track link clicks and measure marketing performance.

Side-by-side comparison

How to pick a good custom slug

The basics are straightforward, but it's easy to end up with a slug that's technically valid but doesn't do its job. Here's what makes a slug actually useful:

Keep it short

The whole point of a short link is brevity. If your custom slug is /how-to-sign-up-for-the-early-access-list, you've defeated yourself. Three to five words is the sweet spot. /early-access is better.

Make it obvious

Someone reading your slug should have a reasonable idea of where it leads. /free-guide sets a clear expectation. /page1 tells them nothing.

Use hyphens, not underscores

Hyphens are standard on the web, easier to read, and don't disappear when text is underlined. /new-products reads fine underlined. /new_products looks like the underscore is missing.

Avoid numbers that could be confused

If there's any chance your slug will be typed from a printed source, avoid things like /b2b-leads where the zero and the letter O, or the number one and lowercase L, could be misread. Keep it letter-only where possible.

Match it to the destination, not the campaign name

Internal campaign names often mean nothing to the people receiving the link. /q2-outreach-test might make sense internally but is confusing to a potential customer. Name it after what they're getting, not what you're doing.

There's a full guide on choosing slugs in detail here: how to create a memorable custom URL slug.

Can you run out of good custom slug names?

In theory, yes — but only if you're not thinking creatively. In practice, the solution is usually to add a bit of context. If /contact is taken, try /contact-us, /get-in-touch, or /reach-out. If /offer is taken, try /may-offer or /spring-deal.

Keep the naming consistent for your own links over time. If you always use /month-offer for monthly promotions, you'll always know where to look in your stats.

What if you want both options?

You can create as many links as you want — some random, some custom — and they all work the same way. Nothing stops you from using a random slug for a quick share and a custom slug for a proper campaign. The process is identical either way.

On TheLinkSpot, the custom slug field is optional. Leave it blank for a random slug, or fill it in to get a custom one. No account needed for either.

Frequently asked questions

Can two people create the same custom slug?

No. Each slug exists once. If someone has already created thelinkspot.com/my-shop, that one is taken. You'll be told when you try to create a slug that's already in use and can choose something different.

Can I change a custom slug after creating it?

Not directly — once a slug is created and pointing to a URL, it's fixed. If you need to update it, the practical solution is to create a new link with the correct destination. If you used a printed slug and genuinely need it updated, get in touch and we can look at it.

Is there a length limit for custom slugs?

Yes — slugs must be between 3 and 50 characters. In practice, anything over 20 characters is already getting unwieldy. Aim for under 15.

Do random slugs ever clash with custom slugs someone else created?

No. The random slug generator checks for existing slugs before assigning one, so you'll never accidentally get a slug that's already taken or that conflicts with a custom one someone else created.

Does the type of slug affect click tracking?

No — every short link, random or custom, gets the same click tracking. You can check the stats for any link at thelinkspot.com/stats/your-slug. The only practical difference is that a custom slug is easier to remember when you want to check back on it later.

The short version

If you're sharing a link quickly and no one needs to read or type it: random slug is fine. If the link is going anywhere public, printed, or somewhere you'll need to find it again: spend fifteen seconds on a custom slug. The extra effort pays off.

Ready to create one? Head to TheLinkSpot — paste your URL, choose a slug or skip that step, and your link is ready immediately. No account required.