How many characters are allowed per headline?

Each headline in a Google responsive search ad is limited to 30 characters. Google may show up to three headlines separated by a " | " pipe character.

How long can each description line be?

Each description line allows up to 90 characters. Google may show one or both description lines depending on the ad format and available space.

What is the display URL path limit?

The base domain is taken from your final URL. You can add up to two optional path fields, each limited to 15 characters. The full display URL format is: domain/path1/path2.

Does this tool submit ads to Google?

No. This is a purely client-side visual preview. Nothing is sent to any server. Use it to proof your ad copy, then copy the finalized text into Google Ads.

What is a responsive search ad?

A responsive search ad (RSA) lets you provide up to 15 headlines and 4 descriptions. Google's AI then tests combinations and serves the best-performing ones. This tool previews one combination at a time.

Why does Google sometimes show only two headlines?

Google dynamically chooses how many headlines and descriptions to display based on the device, ad rank, and available SERP real estate. On mobile there is less space, so fewer elements may appear.

Google Ads Preview Tool

Name: Google Ads Preview Tool
Availability: InStock
Author: Nham Vu

Type your headlines, display URL, and description lines to instantly see a pixel-accurate Google Search ad preview for both desktop and mobile.

Ad Copy

Headlines (30 chars each)

H1 0/30

H2 0/30

H3 0/30

Display URL

Final URL *

Path 1 0/15

Path 2 0/15

Descriptions (90 chars each)

Description 1 0/90

Description 2 0/90

Load Example

Google Desktop — Sponsored Result

Google Ads Character Limits

Headline

30 chars max

Up to 3 shown

Description

90 chars max

Up to 2 shown

URL Path

15 chars each

2 path fields

Final URL

2048 chars max

Not displayed

Summary

Type your headlines, display URL, and description lines to instantly see a pixel-accurate Google Search ad preview for both desktop and mobile.

How it works

Enter your three headlines (30 chars each) and two description lines (90 chars each).
Provide a final URL; path segments are appended to build the display URL.
The preview panel refreshes in real time, rendering the ad exactly as Google would show it.
Character meters turn amber near the limit and red when exceeded.
Switch the preview tab to check how the ad looks on a mobile device.

Use cases

Proof Google Search ad copy before submitting to the Google Ads platform.
Show clients a polished preview of upcoming ad creative.
Train copywriters on responsive search ad character limits.
Spot headlines that will be truncated on mobile before they go live.
Test multiple headline and description combinations side by side.
Audit existing ad copy for length compliance during account reviews.
Create screenshots of ad mockups for pitch decks and proposals.
Teach PPC fundamentals with a live visual reference.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu