Home About Support Blog Ask AI
Dashboards +
On-Page SEO +
Technical SEO +
SERP & Content +
Local SEO +
Get the Chrome Extension
Free SEO Tool

SERP Preview Tool

See how your title and description appear in Google search results, or measure every page in your sitemap at once.

Last updated: September 2026
0 chars · 0px
0 chars · 0px
Lumina SEO
⋮
lumina-seo.com
Your title tag will appear here
Your meta description will appear here.
AI-Powered

Generate optimized titles & descriptions

Auto-detect keywords from your page, get search volumes, and generate SEO-optimized snippets with AI.

10 credits per day

How this Google snippet preview works

Every SERP preview tool that counts characters is lying to you. Google truncates titles and descriptions by pixel width, not character count. A title full of "W"s and "M"s gets cut 10 characters earlier than one with "i"s and "l"s. That's why so many title tag preview tools get it wrong. They count letters instead of measuring pixels.

This SERP simulator redraws your Google snippet as you type, with a pixel counter that follows whichever device you have selected. Fetch a URL to pull the current values, then edit until the title fits under 580px and the description under 920px on desktop, 500px and 780px on mobile.

Switch to Bulk and it stops being one page at a time. Point it at your sitemap and it measures every page, printing the desktop and mobile width of each title and description side by side. One phrase you have used on 40 pages is a lot easier to spot in a sorted column than by opening 40 tabs.

How to use this SERP preview tool

Start with the URL of a page you already rank for, or one you are about to launch. Paste it and the tool pulls the live title and meta description so you can edit from there. The counter updates on every keystroke in three colours: green is comfortably inside the limit, amber means you are within 15% of it and a longer brand name would push you over, red means the text is wider than Google shows.

Red is not a disaster, it is a decision. Google cuts at the last word that fits and appends an ellipsis, so what you lose is the tail. Put the part that has to survive at the front and check the preview, not the number.

Desktop vs. mobile SERP preview

In 2026, mobile wins. Google serves mobile SERPs to most users and truncates narrower there: 500px for a title against 580px on desktop, 780px for a description against 920px. A title that looks fine on the desktop preview can still be cut for most of the people who see it.

Single mode has a toggle, so you check one device then the other. Bulk mode prints both in the same row, which is the faster way to find the pages where the two verdicts disagree.

SERP preview tool vs. Google Search Console

Search Console shows the snippet Google is currently displaying, and it is the only place that tells you when Google rewrote your title rather than using it. What it will not do is show you a page that does not rank yet, or one that does not exist yet.

This tool has the opposite shape. Type anything and it measures it, no page required. When you do give it a URL, it fetches through a proxy and sees what a crawler sees, so a page behind a login or an IP allowlist will not load. Use Search Console for what is live and this for what you are about to ship.

Explore more tools

Meta Tag Analyzer

Analyze all SEO meta tags for any URL.

Schema Validator

Validate JSON-LD against Google fields.

llms.txt Generator

Create AI crawler guides.

OG Preview

Preview social cards for Facebook and LinkedIn.

Heading Checker

Analyze H1-H6 heading hierarchy.

FAQ

What is a SERP preview tool?+
It simulates how your page appears in Google search results (title, URL, description), helping you optimize for click-through rate before publishing.
Why does pixel width matter more than character count?+
Google truncates titles and descriptions based on pixel width, not character count. A title with wide characters like "W" or "M" gets cut sooner than one with narrow characters like "i" or "l". This tool measures actual rendered pixels for accuracy.
What is the ideal title tag length?+
Keep titles under 580 pixels on desktop (~60 characters) and 500 pixels on mobile. Titles that exceed this limit get truncated with an ellipsis (...), which can hurt click-through rates.
What is the ideal meta description length?+
Meta descriptions should stay under 920 pixels on desktop (~155 characters) and 780 pixels on mobile. Descriptions that are too short may look incomplete, while too-long ones get cut off.
Does Google always use my title and description?+
Not always. Google may rewrite your title or generate its own description if it thinks its version better matches the search query. Well-optimized, relevant meta tags are much more likely to be used as-is.
How does the AI suggestion feature work?+
The AI reads your page, auto-detects target keywords with real search volumes, and writes two title and two description options around them. It asks the model for roughly 55 and 150 characters, then measures every option in pixels and marks any that Google would still truncate. The character budget is the instruction; the pixel measurement is the check.
Can I use this tool for any website?+
Yes. Enter any URL and click "Fetch from URL" to pull the current title and description. The tool works with any publicly accessible webpage. No signup or installation needed.
Get this on every page you visit

Lumina gives you this SERP preview plus 40+ SEO checks — free.

Add Lumina to Chrome — Free