Free tools

Free LinkedIn & X tools for relationship building

Small, useful tools for founders, consultants, and sales people who build relationships on LinkedIn and X. No sign-up required.

Browser extension

Chrome extension

Free

FeedFilter

Hide old, promoted, and out-of-network posts from your LinkedIn and X feeds. Free, private, no account.

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LinkedIn tools

Calculators

Free

Engagement Rate Calculator

Calculate your LinkedIn engagement rate and benchmark it against B2B averages — by impressions or by followers.

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Checkers

Free

LinkedIn Character Counter

Count your text live against every LinkedIn limit — posts, headlines, comments, connection notes, and DMs.

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Formatters

Free

LinkedIn Post Formatter

Fix line breaks, bullets, tabs, and double spaces in your post before you publish.

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Formatters

Free

LinkedIn Post Preview

See how your post renders in the feed on mobile and desktop, with the 'see more' cutoff.

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Reference

Free

LinkedIn Character Limits Reference

Every LinkedIn character limit in one place. A quick reference for posts, headlines, comments, and more.

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Formatters

Free

LinkedIn Text Formatter

Make text bold, italic, script, monospace, and more for LinkedIn posts, comments, and headlines.

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Generators

Free

LinkedIn Post Idea Generator

46 curated post ideas for B2B sellers and founders — filter by format and topic.

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Formatters

Free

Markdown to Unicode Converter

Convert **bold**, *italic*, `code`, and ~~strike~~ Markdown into formatted Unicode text.

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X (Twitter) tools

Checkers

Free

X (Twitter) Character Counter

Count your X post against the 280-character limit, with URL, hashtag, and reply counting.

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Calculators

Free

X Engagement Rate Calculator

Calculate your X engagement rate from impressions, likes, replies, reposts, and bookmarks.

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Builders

Free

X Thread Builder

Write a thread one tweet at a time — each checked against the 280 limit, ready to copy.

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Formatters

Free

X Fonts Generator

Convert plain text into stylized Unicode fonts for your X posts and bio.

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Calculators

Free

X Account Value Calculator

Estimate what your X account is worth and what sponsors should pay, with the formula disclosed.

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Libraries

Free

X Bio Templates

Copy-and-paste X bio templates grouped by archetype, each under the 160-char limit.

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Checkers

Free

X Bio Character Counter

Count your X bio against the 160-character limit with a live preview.

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Tools get you ready. Surfolks puts it into action.

Surfolks turns the activity from the people you care about into a focused daily feed — then helps you find the people and conversations that matter to your goals.

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Still comparing free options? See what an X List, a notification bell, or a spreadsheet actually tracks.