Free social media tools

No account needed. Preview, count, and format your posts exactly as they'll appear on each platform, before you hit publish.

Preview & format

See and style your post exactly as it'll appear in the feed.

X (Twitter)

X Post Preview & Thread Splitter

See exactly how your tweet will look before you publish. Weighted character count, URL shortening, and automatic thread splitting with paragraph, sentence, and word-boundary splitting.

LinkedIn Post Preview

Preview your LinkedIn post with accurate truncation, hashtag highlighting, and engagement bar, in both compact feed and full expanded views.

LinkedIn Text Formatter

Add bold, italic, and emoji text to your LinkedIn posts using Unicode styling: the same trick professional creators use to stand out in the feed.

Utility

Text Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, kebab-case, or snake_case, live, with one-click copy.

Count & check

Stay under every limit before you hit publish.

X (Twitter)

X Character Counter

Count characters the way X does: URLs are 23, CJK ideographs are 2, everything else is 1. Paste your tweet and get an instant weighted count.

LinkedIn Character Counter

Count against LinkedIn's 3,000-character post limit, 220-character headline, and 2,600-character About section, with a live 'see more' fold indicator.

All platforms

Social Media Character Counter

Count characters for X, LinkedIn, Instagram, and Threads in one place, with X's weighted counting and a full bio-limit reference table.

All platforms

Hashtag Counter

Paste your caption to count hashtags, dedupe them, flag broken tags, and check your count against X, LinkedIn, and Instagram norms.

Utilities

Everyday helpers for links and assets.

Utility

UTM Builder

Build tracked campaign URLs in seconds. Add your UTM parameters, watch the link assemble live, and copy it with one click, all in your browser.

LinkedIn Image Sizes

Every LinkedIn image size from LinkedIn's own Help Center: profile banner, company page logo and cover, post photos, carousels, articles, events and video.

Reference

Social Media Image Sizes

Current image and video dimensions for X, LinkedIn, and Instagram (post images, profiles, covers, carousels, documents, and Reels) with a size picker.

See the previews in action

Both components render statically below, with no data fetching and no account required.

X (Twitter) post preview

Postopus@postopus·now

Just shipped something I've been quietly building for months. Postopus lets you write once → preview natively for LinkedIn and X → schedule and publish to LinkedIn & X from one editor. No more copy-paste juggling. No more "why does it look different when I publish?" Check it

LinkedIn post preview

João Saraiva

Founder @ Postopus · Social media scheduling for creators

Now·

I built Postopus because I was tired of the copy-paste dance. Write once. See it live on each platform. Schedule. Done. Here's what's inside: → Native previews for LinkedIn and X → Weighted character counting (yes, CJK counts as 2 on X) → Thread composer with per-segment previews → First-comment scheduling We're in early access. If you create or manage social content and want to try it, drop a comment or DM me. #SocialMedia #ContentCreation #ProductLaunch