Google Ads character limits (2026 Guide): Headlines, descriptions & all ad formats

Google Ads character limits are set to decide whether your ad is visible in full, limited, or fails to perform before you’re even clicked once.

This is not a minor technical detail. Each headline, description, and call to action must fit within Google’s space limits; otherwise, it will be cut off, sometimes in a way that makes the ad seem incomplete or unfinished.

This article explores character limits for each format of Google Ads, walks you through how truncation is determined, and offers tips for writing copy within the limit that will still be effective.

Google Ads character limits at a glance

Here’s a quick reference for the character limits you’ll hit most often in Google Ads:

Google enforces these limits to ensure ads display properly across mobile, desktop, Search, Display, YouTube, and partner placements.

Exceeding the limits can lead to truncation, weaker messaging, and lower click-through rates.

What are the character limits for Google Ads?

Google enforces specific character limits for each ad type to ensure ads display correctly across mobile, tablet, and desktop.

As Google’s Ads Help Center documentation outlines, these limits apply per asset and are enforced at the point of entry in both Google Ads and Google Ads Editor.

Responsive Search Ads (RSAs)

• Headlines: 15 headlines max, 30 characters each
• Descriptions: 4 descriptions max, 90 characters each
• Display URL paths: 2 fields, 15 characters each

Display Ads

• Short headline: 30 characters
• Long headline: 90 characters
• Description: 90 characters
• Business name: 25 characters

Performance Max

• Headlines: up to 5, 30 characters each
• Long headlines: up to 5, 90 characters each
• Descriptions: up to 5, 90 characters each
• Short description: 1, up to 60 characters
• Business name: 25 characters

App Campaigns

• Headlines: up to 5, 30 characters each
• Descriptions: up to 5, 90 characters each

Call Ads

• Headlines: 30 characters each
• Descriptions: 2 lines, 90 characters each
• Business name: 25 characters

Dynamic Search Ads (DSAs)

• Descriptions: 2 lines, 90 characters each. DSAs generate headlines automatically, so your descriptions carry more weight and should be clear and action-focused.

Common Google ads character limit mistakes advertisers make

Even experienced advertisers make predictable errors when working within Google Ads character limits.

1. Overloading headlines with features: Thirty characters is not enough space to list multiple product benefits. Each headline should carry one clear message.
2. Starting with the brand name: Using a brand name at the start of every headline wastes up to a third of available space. Your display URL already shows your brand. Use the headline for the offer or benefit instead.
3. Repeating the same phrase across assets: RSAs penalize repetition. If “Free Trial” appears in five headlines, Google treats those as near-identical assets and limits how often they are tested together.
4. Ignoring mobile truncation: Headlines that read cleanly at 30 characters on desktop can break awkwardly on mobile. Always preview on mobile before publishing.
5. Miscounting Dynamic Keyword Insertion: When using DKI, the fallback text counts toward the character limit. If your fallback is 28 characters, that is the length Google uses to evaluate against the limit.
6. Treating descriptions as a second headline: Description lines give you 90 characters, but they are not extended headline space. Use one description for your key benefit and one for a call to action or objection handling.

RSA vs Performance Max vs Display: character limit comparison

Different formats give you different amounts of working space. Here is how the three main formats compare side by side.

Why do Google ads character limits matter so much for ad performance?

Character limits are not just technical rules. They directly affect how your ad is read, understood, and clicked.

Prevents broken or cut-off messages

When you exceed character limits, Google may truncate your copy rather than fix it. This can cut sentences in the middle or remove key parts of your offer.

For example, “Free Delivery on All Orders Ov…” looks incomplete and can immediately reduce trust.

This issue is even more common on mobile, where screen space is smaller. Since most users browse on mobile devices, your message is more likely to be shortened or visually disrupted.

Improves Ad strength and relevance

For Responsive Search Ads, Google evaluates how well your assets are written using Ad Strength signals. Clear, varied, and concise headlines and descriptions tend to perform better because they:

• Give Google more useful combinations to test
• Avoid repetition across assets
• Stay aligned with user intent

Influences click-through and Quality Score

Google’s Quality Score is partly based on expected click-through rate. Ads that are clear, readable, and fully visible tend to attract more clicks.

If your message is cut off or unclear, users are less likely to engage. Over time, that can negatively affect performance and increase cost per click.

Shapes first impressions instantly

Users decide within seconds whether to click an ad. In that short time, clarity matters more than anything else.

A complete, well-written ad signals professionalism and relevance. A fragmented or truncated one can look careless, even if the offer is strong.

How does truncation work in Google Ads?

Understanding truncation helps you write copy that displays clearly, no matter which asset combination Google shows.

Google shortens ad text when it doesn’t fit the available space. This depends on:

1. Device: Mobile screens display less text than desktop screens, so truncation is more common.
2. Ad format and placement: Different formats (Search, Display, Performance Max) display assets differently, which can affect how much text appears.
3. Character width: Some letters (like W or M) take up more space than others (like i or l), which can slightly change how quickly text wraps or cuts off.

There is no guaranteed “safe length,” but staying well within character limits and keeping messages concise reduces the risk of truncation and improves clarity across placements.

Real-world examples of truncation problems

The following examples show how Google Ads copy can lose clarity when headlines or descriptions become too long for certain placements or mobile screens.

Example 1: Broken mobile headline

• Before: “Best Accounting Software for Small Businesses in Nigeria”
• Possible mobile truncation: “Best Accounting Software for Small Busi…”
• After: “Accounting Software for SMEs”

The revised version conveys the core message more quickly and is less likely to be truncated on smaller screens.

Example 2: Weak call to action

• Before: “Start Your Free 30-Day Trial Today Without Any Credit Card Required”
• Possible truncation: “Start Your Free 30-Day Trial Today With…”
• After: “Start Free Trial Today”

The shorter version keeps the call to action visible and easier to scan across placements.

Example 3: Desktop vs mobile display

A headline that appears full-width on desktop may still be shortened on mobile because mobile devices have a narrower text width. For example:

• Desktop: “Free Delivery on Orders Over ₦50,000”
• Possible mobile display: “Free Delivery on Orders Ov…”

This is why advertisers should preview ads across both desktop and mobile placements before publishing campaigns.

What is the character limit for Google Ads headlines?

The headline limit for a Responsive Search Ad (RSA) is 30 characters per headline. You can create up to 15 headlines, and Google will automatically test different combinations to find the best-performing mix.

And because Google may show different headline combinations, each headline should be clear and able to stand on its own.

Examples close to the limit include:

• “Start Your Free Trial Today” (fits within 30 characters)
• “Free 30 Days Trial No Credit Card” (too long)
• “No Contracts. Cancel Anytime.” (fits within 30 characters)

How do you write effective copy within Google Ads character limits?

Writing within character limits is the baseline. The real skill is using limited space to create clear, relevant, and persuasive copy.

Put value first, not your brand

Many advertisers start headlines with their brand name, but 30 characters is too limited for that.

Focus on the user’s key takeaway instead, the offer, benefit, or solution. Your display URL already shows your brand.

• Instead of: “ClickPatrol, Click Fraud Tool”
• Use: “Block Invalid Clicks Instantly”

Use numbers and specifics

Numbers are short, clear, and persuasive. “Save 40% This Week” is stronger than “Big Savings Available Now.”

Specifics also improve credibility and click-through rates.

Match your copy to search intent

Trying to say too much makes it harder to stay within limits. If someone searches “PPC click fraud protection,” your headline should reflect that intent directly. Relevance naturally keeps copy concise.

Use descriptions properly

Description lines (up to 90 characters) give more space, but they shouldn’t be used to list features. A better approach is:

• One description of the key benefit
• One for a call to action or objection handling

Pay attention to punctuation and formatting

Punctuation counts toward character limits. Exclamation marks, commas, and em dashes all take up space.

Dynamic Keyword Insertion also counts toward the total length based on the fallback text.

Do character limits apply to ad extensions?

Yes. Google Ads ad extensions (now called assets) have their own character limits, separate from the headline and description.

Each asset type has specific rules, for example:

• Sitelinks: 25-character headlines and 35-character description lines
• Callouts: 25 characters each
• Structured snippets: 25 characters per value
• Call descriptions: 30 characters
• Lead form assets: up to 30-character headlines and longer descriptions

What tools can help you manage Google Ads character limits?

Managing Google ads character limits becomes easier when you build and test ads using the right workflow instead of relying on manual counting alone.

Google Ads Editor

Google Ads Editor helps advertisers create and edit campaigns in bulk while showing character limits in real-time.

This makes it easier to spot headlines or descriptions that exceed the allowed length before publishing.

It is especially useful when managing large Responsive Search Ad campaigns with multiple headlines and descriptions.

Google Ads Preview Tool

The Google Ads Preview Tool helps you see how ads may appear across desktop and mobile placements.

This is important because a headline that fits on a desktop can still be truncated on smaller mobile screens.

Previewing ads before launch helps identify:

• Cut-off headlines
• Broken calls to action
• Awkward line wrapping
• Inconsistent asset combinations

Character count tools

Simple tools like Google Docs character count, Microsoft Word, or dedicated PPC writing tools can help writers stay within limits while drafting ad copy.

These tools are useful during the copywriting stage before assets are uploaded into Google Ads.

RSA asset testing and pinning

Responsive Search Ads automatically combine different headlines and descriptions. And because of this, advertisers should test how assets read together rather than reviewing each headline individually.

Pinning can also help control which assets appear in specific positions when compliance, branding, or messaging consistency matters.

However, excessive pinning can reduce Google’s ability to test combinations and may limit performance.

Mobile-first ad review

Since most Google Ads traffic now comes from mobile devices, reviewing ads on mobile should be part of every campaign workflow.

Many advertisers write headlines that technically fit the limit but still appear crowded or truncated on mobile screens.

Shorter, cleaner headlines often perform better because they are easier to scan quickly.

Google ads character limits explained: How to write headlines and descriptions that fit and convert

The character limit for Google Ads is one of the most practical constraints in paid search advertising.

Understanding the limits for each format, 30 characters for RSA headlines, 90 for descriptions, and varying allowances for Performance Max, Display, and App campaigns, is the starting point for writing copy that displays correctly and performs consistently.

But knowing the numbers is only part of the equation. The way you use those characters determines whether your ad earns a click or gets scrolled past.

Specificity, relevance to search intent, and clean formatting, within limits, are what separate high-performing copy from ads that technically fit but fail to convert.

Review your current campaigns against the limits in this guide, audit your assets for truncation risk on mobile, and treat every character as deliberate, because in Google Ads, every character is.

Abisola

Meet Abisola! As the content manager at ClickPatrol, she’s the go-to expert on all things fake traffic. From bot clicks to ad fraud, Abisola knows how to spot, stop, and educate others about the sneaky tactics that inflate numbers but don’t bring real results.

View all posts by Abisola
(Abisola)

Related Articles

Google Ads description: High-CTR examples & formulas (2026)

How to protect PMax campaigns from click fraud (2026 Guide for Google Ads advertisers)

Tier 1 countries: What they are and why they matter for your ad campaigns