Free Social Media Post Previewer

See exactly how your post will appear on Instagram, TikTok, X, LinkedIn, Facebook, Threads, and 7 more platforms — before you hit publish. SocialCal's Post Previewer renders pixel-accurate mockups of your content across every major social network in real time. Upload your image or video, write your caption, and instantly see how it looks in each platform's unique layout. Safe zone overlays show where platform UI (like buttons, profile pics, and navigation bars) will cover your content. The image size checker flags any dimension issues before they become problems. Built for content creators who want every post to look perfect, social media managers presenting content to clients for approval, and teams planning multi-platform campaigns where consistency matters. Key features: - Preview posts on 13 social platforms - Safe zone overlays showing platform UI coverage - Image size checker for all platforms - Caption preview with character limits - Aspect ratio guidance per platform - Free, works in browser — no signup