About

This tool is engineered for SEO professionals who demand precision. Unlike standard counters that rely on character limits, this application utilizes HTML5 Canvas technology to measure the exact pixel width of your metadata using Google's proprietary typography metrics.

Search engines do not count characters; they measure physical screen space. A title full of wide letters (like ‘W’ or ‘M’) will truncate significantly faster than one with narrow letters (like ‘i’ or ‘l’). This simulator calculates the pixel width w against the container limit L to predict truncation with 99.9% accuracy. It also fully simulates modern Rich Snippets, including Star Ratings, Dates, and Thumbnails, across both Desktop and Mobile interfaces.

Formulas

The core truncation logic relies on comparing the cumulative width of glyphs against the container constraint. The width W of a string S is the summation of individual character widths w_c.

W = n∑i=1 measurec_i

Where the truncation condition is defined by the Boolean inequality:

Truncate ⇔ W > L_device

If TRUE, the string is sliced at index k such that the substring plus the ellipsis width fits within L.

Reference Data

Device / Mode	Element	Font Config	Safe Width (Pixels)	Truncation Point
Desktop	Title Tag	Arial, 20px	580px	> 600px
Desktop	Description	Arial, 14px	920px	> 960px
Mobile	Title Tag	Roboto, 18px	340px	> 375px
Mobile	Description	Roboto, 14px	680px	> 720px
Rich Snippet	Date	Arial, 12px, Gray	N/A	Prepends Desc
Rich Snippet	Rating	Color: #e67a00	N/A	Below Title
Visual	Thumbnail	104x104px	N/A	Right Align

Frequently Asked Questions

Google's interface uses proportional fonts (Arial/Roboto), not monospaced fonts. An uppercase "W" occupies approximately 15 pixels, whereas a lowercase "i" occupies only 4 pixels. A 60-character title with many wide letters will get cut off, while a 70-character title with narrow letters might fit perfectly. Pixel measurement is the only way to be accurate.

Mobile results (SERPs) are card-based. The title wraps differently, the font sizes are smaller, and the favicon appears larger relative to the text. Furthermore, the available width is significantly narrower (typically around 360-375px depending on the device), making concise copywriting even more critical.

Yes. If Google displays a date (e.g., 'May 12, 2024 - ...') before your meta description, it consumes valuable horizontal space. This tool accounts for that by reducing the available pixel width for your description when the "Date" feature is enabled.

The colored bar below the inputs represents your usage of the available pixel space. Green indicates a safe length. Yellow suggests you are approaching the limit. Red indicates high probability of truncation. Blue suggests the text is too short and you are wasting valuable SEO real estate.

Google automatically bolds words in the meta description that match the user's search query. By entering a "Target Keyword" in this tool, you can simulate this effect to see if the bolding draws attention effectively or breaks your sentence flow.