Search Ad Headline and Description Fit Checker

How to Use This Tool

Pick the asset type, paste one per line, and anything over the limit is flagged with the exact point where it stops fitting.

Counting is by display width, not by character

Ad platforms count double-width characters as two. Chinese, Japanese and Korean characters, full-width punctuation and some symbols all occupy two of the allowance, because the limit exists to control how much space the text takes on screen.

So a 30-character headline holds 30 Latin characters or 15 CJK ones. A campaign written and approved in English will overflow when translated, and the failure surfaces at upload, one asset at a time, usually under deadline.

Emoji are a separate problem: many are double-width, some are built from several code points joined together, and platform support for them in ad text is inconsistent to non-existent. Test before relying on one.

Spaces count

A trailing space is a character and platforms do not generally trim it for you. It survives copy-and-paste from a spreadsheet, it is invisible in the editor, and it is enough to reject a headline that is otherwise exactly at the limit.

The trim option here shows the difference, which is the fastest way to find out whether whitespace is what is failing.

Checking in bulk before upload turns fifteen small interruptions into one pass.

Fitting is the easy half

Responsive ad formats combine assets automatically, choosing which headlines and descriptions to show together. That has two consequences the character count cannot see:

Every asset has to stand alone. A headline written as the second half of a sentence will sometimes appear first, so anything that depends on order reads as nonsense in some combinations.
Repetition is visible. If ten of your fifteen headlines say the same thing in different words, the combinations all look identical and the system has nothing to test.

Pinning an asset to a fixed position solves the first problem and removes most of the benefit of the format, so it is usually reserved for legally required text rather than for style.

Using the whole allowance, and not padding it

Assets well under the limit waste space that a competitor is using, and headlines stuffed to exactly 30 characters with filler read worse than short ones. Both are visible in the usage column above.

The useful target is a spread: some short and punchy, some using the full width, all of them saying different things. Uniform length across every asset is usually a sign they were written to a template rather than to the reader.

Limits change from time to time and vary by platform and by market. The figures here are the widely published ones for search and display assets — confirm against your platform's current documentation before a large upload.

Frequently Asked Questions

How many characters can a search ad headline be?

Thirty for a standard headline and ninety for a long headline or description. Those are display-width limits, so a headline holds 30 Latin characters or 15 Chinese, Japanese or Korean ones.

Do Chinese and Japanese characters count as two?

Yes. Ad platforms count by display width, so double-width characters use two of the allowance each. A campaign that fits in English will overflow when translated, and the error appears at upload rather than at writing time.

Do spaces count towards the character limit?

Yes, and they are generally not trimmed for you. A trailing space that survived a paste from a spreadsheet is invisible in the editor and enough to reject an asset that is otherwise exactly at the limit.

What happens if my headline is too long?

The editor refuses the asset rather than shortening it, so the campaign stalls until you rewrite. Checking in bulk beforehand turns a series of small interruptions into one pass.

Should I use every character available?

Aim for a spread rather than a uniform length. Assets well under the limit give up space a competitor is using, and headlines padded to exactly the cap with filler read worse than short ones.

Why does my headline appear in a different position than I wrote it?

Because responsive formats combine assets automatically and choose which to show together. Every headline has to make sense on its own — pinning to a fixed position works but removes most of the benefit of the format, so it is usually kept for legally required text.

A 30-Character Headline Holds 15 Japanese Characters

How the calculation works