Google wants 30 characters. Meta cuts you off at 125. LinkedIn, X, and YouTube each have their own rules. Instead of pasting into five ad managers to find out what gets chopped, paste your copy once and see exactly where it fits and where it breaks.
Send me the campaign you're running and I'll rewrite your headline and primary text for the platform you care about, free. It's a taste of the paid-and-organic copy work I do for founders and teams.
The Ad Copy Fit Checker checks a single headline and description against the exact character limits of Google, Meta (Facebook & Instagram), LinkedIn, X, and YouTube ads, all at once. Paste your copy and see which platforms it fits, which will truncate it, and exactly where the cut falls, so you write once instead of pasting into five ad managers. Runs in your browser, nothing stored.
Performance marketers, founders running their own ads, and anyone repurposing one message across channels. If you've ever launched a campaign only to see "...See More" swallow your call to action, this catches it before you spend a rupee.
For each platform it counts your headline and description against the current published limits and recommended thresholds, shows a live fill bar, and renders a truncation preview highlighting any text that would be cut. It covers Google responsive search ads (30/90), Meta headline and primary text, LinkedIn single-image ads, X ads, and YouTube. Every limit is a concrete number, not a guess.
The most persuasive line in your ad is worthless if the platform hides it behind a "See More" or clips it mid-sentence. Front-loading the hook and staying inside each limit means the whole audience sees the whole message, which protects both click-through and quality signals that affect your cost per result.
Write the shortest strong version first (Google's 30-character headline is the tightest constraint), then expand for platforms with more room. Put the benefit and call to action in the first 125 characters so nothing critical hides behind truncation. Re-check here after each edit. If you want it done for you, the option above connects to hands-on copy help.
Responsive search ads allow up to 30 characters per headline and 90 per description. This tool checks against those and the other major platforms at once.
Meta allows long primary text but truncates around 125 characters behind "See More," and headlines around 40. The tool flags when you cross those.
Ad platforms change limits occasionally. These reflect the widely published limits at the time of writing; always confirm in the ad manager for high-stakes campaigns.
No. Everything runs in your browser and nothing is saved or sent anywhere.
Yes. Send your campaign and you'll get your headline and primary text rewritten for your target platform, free, as a taste of the copy work I do.
Limits reflect widely published platform maximums and recommended thresholds at the time of writing and may change; confirm in each ad manager for high-stakes campaigns. Everything runs in your browser; nothing is stored.
Built by Vishesh Kulshrestha · part of vishkul/tools.