As of 2026 the LinkedIn headline limit is 220 characters (LinkedIn raised it from 120 in late 2024) and the About/summary limit is 2,600 characters. This tool treats 220 as the hard cap for the headline and 2,600 for the About, with a green/amber/red counter for each. The two fields do very different jobs: the headline is a short, keyword-dense line under your name, while the About is room to tell a first-person story. Visibility matters more than the raw cap — only about the first 70 characters of the headline show in mobile search and recruiter preview cards, and only roughly the first 300 characters of the About appear before “…see more” — so the tool front-loads keywords and a hook. Many practitioners aim for a 160–200 character headline and an 1,800–2,200 character About rather than maxing out. Limits are current best estimates that LinkedIn can change without notice.

A strong 2026 LinkedIn headline has up to four beats: your role or specialty, the industry or audience you serve, a value statement or measurable outcome, and a credibility signal such as a certification or “ex-” company. LinkedIn’s headline and current-position fields carry roughly 60% of recruiter-search ranking weight, so “Senior PM | B2B SaaS & Payments | Grew ARR $5M→$20M” works far harder than “Product Manager”. Front-load your main keyword because only ~70 characters show in mobile search and preview cards. The tool’s templates build exactly this role · audience · value shape and put your searchable keywords first, but avoid keyword stuffing — LinkedIn’s semantic search now penalises repeating the same term, and if you are job-hunting you can add “Open to Work” directly in the headline. Tighten the result to one crisp idea before you publish.

The About section is your first-person story, up to 2,600 characters, but only about the first 300 show before “…see more”, so treat that opening like a headline: lead with a bold statement, a specific outcome or the problem you solve rather than “Welcome to my profile”. A proven structure is a one or two sentence hook, a short paragraph on who you help and how you are credible, three to six scannable bullets of specialties or results (each starting with a number or action verb), and a single clear call-to-action telling the reader what to do next. Many writers target 1,800–2,200 characters — enough for depth and keywords without padding. This tool assembles that first-person hook · specialties · CTA shape from your inputs and front-loads keywords into the visible opening, but the final edit — a concrete number, a real client, your city — is yours.

There is no AI or language model anywhere in this tool and no network request. Each headline and About variant is built by slotting your role, audience, specialties, keywords, tone and call-to-action into curated local templates and small professional-tone wordbanks, then trimming optional pieces so the headline fits 220 characters and the About stays within 2,600. Because it is deterministic, the same inputs plus the same seed always produce the same variants, and shuffle simply advances the seed for a fresh but repeatable set. Everything runs on your device in JavaScript — no server, upload, database, logging or CDN in the path — and favourited bios live only in this tab’s memory. The honest trade-off is that templated copy is a strong STARTING POINT, not finished writing: personalise it with a specific outcome, number or company before you publish.