The LinkedIn Character Limit Counter tells you in real time whether your text fits the field you are writing for. LinkedIn silently truncates anything over the limit, so a counter that knows the real per-field thresholds saves you from a cut-off headline or a post that loses its call to action.
How it works
Each LinkedIn field has a specific maximum character count enforced by the platform. The tool stores those limits and counts your text using JavaScript string length, which matches how LinkedIn measures characters (spaces, line breaks, and emoji each count). As you type, it compares your length to the selected field’s limit and changes colour: neutral while you have room, a warning as you approach the cap, and an over-limit flag once you exceed it.
Field limits and tips
The key limits are: feed post 3,000, headline 220, about summary 2,600, comment 1,250, and direct message 8,000 characters. Even when you have thousands of characters available, the visible preview is short — roughly the first 140 to 210 characters of a post and about 270 of the About section — so always front-load your hook. The counter also shows characters remaining, which is the fastest way to judge how much you can still add before LinkedIn cuts you off.