# SocialPreviewHub — Full Documentation > Free social media tools to preview posts, create carousels, check safe zones, format text, and optimize content for LinkedIn, Twitter/X, TikTok, Instagram, and Facebook — no signup required. ## About SocialPreviewHub is a free, browser-based suite of social media tools designed for marketers, content creators, social media managers, and developers. Every tool is 100% free with no signup, no account, and no credit card required. All processing happens client-side in the browser — no data is stored on servers. ### Who It's For - Social media managers previewing posts before publishing - Content creators building LinkedIn carousels and optimizing hooks - Marketers tracking campaigns with UTM links and validating Open Graph tags - Developers generating meta tags and debugging social cards - Anyone who needs to format, preview, or optimize social media content ### Supported Platforms - LinkedIn (posts, carousels, articles) - Twitter / X (tweets, threads, cards) - Facebook (posts, link previews) - Instagram (posts, stories, reels) - TikTok (videos, safe zones) - YouTube (thumbnails, descriptions) - Pinterest (pins) --- ## Tools ### Post Preview **URL:** https://socialpreviewhub.com/post-preview Preview your social media posts exactly as they'll appear on LinkedIn, Twitter/X, Facebook, and Instagram before you publish. Includes real-time character counters for each platform, Unicode text formatting (bold, italic, strikethrough), hook heatmap analysis with dopamine scoring, and shareable draft links that encode everything in the URL — no database needed. **Features:** - Multi-platform preview (LinkedIn, Twitter, Facebook, Instagram) - Real-time character counters with platform-specific limits - Unicode text formatting: bold, italic, strikethrough - Hook heatmap with dopamine score (0–100) - Power word detection and long sentence warnings - Shareable draft links via Base64 URL encoding - Mobile and desktop preview modes --- ### LinkedIn Post Preview **URL:** https://socialpreviewhub.com/linkedin-post-inspector Dedicated LinkedIn post previewer. Check exactly where the "See More" truncation happens on mobile vs desktop, format text with bold and italic Unicode characters, preview how your post appears in the LinkedIn feed, and create PDF carousels. Free alternative to Taplio and AuthoredUp. **Features:** - "See More" truncation preview (mobile vs desktop) - LinkedIn-specific character counting - Bold/italic Unicode text formatting - Feed appearance preview - PDF carousel generation - Mobile vs desktop layout comparison --- ### Twitter/X Card Validator **URL:** https://socialpreviewhub.com/twitter-card-validator Validate your Twitter/X cards, preview how images will be cropped in the feed, check character counts for tweets, and generate tweet mockups. Supports thread preview and card validation similar to the deprecated Twitter Card Validator. **Features:** - Twitter Card validation (summary, summary_large_image) - Image crop preview - Character counting with Twitter's 280-char limit - Tweet mockup generation - Thread preview support --- ### Carousel Builder **URL:** https://socialpreviewhub.com/carousel-maker Create LinkedIn carousel PDFs without Canva. Upload images or type text slides, drag to reorder, and export a PDF optimized for LinkedIn's 1080x1080 carousel format. One-click PDF generation. **Features:** - Image and text slide support - Drag-to-reorder slides - One-click PDF generation - Optimized for LinkedIn (1080x1080) - No design skills required --- ### Safe Zone Overlay **URL:** https://socialpreviewhub.com/safe-zone-checker Upload your content and preview it with actual TikTok and Instagram Reels UI overlays. Toggle individual UI elements (like/comment/share buttons, caption area, profile info) to check that nothing important is obscured. Download the preview with overlay applied. **Features:** - TikTok UI overlay - Instagram Reels UI overlay - Toggle individual UI elements on/off - Safe zone guidelines - Download preview with overlay --- ### Open Graph Debugger **URL:** https://socialpreviewhub.com/open-graph-debugger Debug and preview Open Graph tags for any URL. See how your link will appear when shared on social media. Validates og:title, og:description, og:image, and Twitter Card meta tags. Free alternative to the Facebook Sharing Debugger. **Features:** - OG tag extraction and validation - Social media link card preview - Twitter Card tag validation - Meta tag analysis - Error and warning reporting --- ### Character Counter **URL:** https://socialpreviewhub.com/character-counter Count characters, words, and sentences with real-time updates. See platform-specific limits for LinkedIn, Twitter/X, Instagram, Facebook, TikTok, YouTube, and more. Includes reading time estimation. **Features:** - Real-time character, word, and sentence counting - Platform-specific character limits - Reading time estimate - Works for all social media platforms --- ### Hashtag Generator **URL:** https://socialpreviewhub.com/hashtag-generator Browse over 20 categories of trending hashtags. Select individual hashtags, mix and match from multiple categories, and copy your selection to the clipboard with one click. **Features:** - 20+ hashtag categories - Individual hashtag selection - Mix & match from categories - One-click copy to clipboard --- ### Image Size Guide **URL:** https://socialpreviewhub.com/image-sizes Complete, always-up-to-date reference for all social media image dimensions. Covers profile pictures, post images, story dimensions, cover photos, ad formats, and more for every major platform. **Features:** - All major platforms (LinkedIn, Twitter/X, Facebook, Instagram, TikTok, YouTube, Pinterest) - Profile, post, story, cover, and ad dimensions - Recommended file formats and sizes - Always up to date --- ### Meta Tag Generator **URL:** https://socialpreviewhub.com/meta-tag-generator Generate SEO-optimized meta tags including Open Graph tags and Twitter Card tags. Fill in a form and get ready-to-paste HTML with one-click copy. **Features:** - Open Graph meta tags (og:title, og:description, og:image, etc.) - Twitter Card tags (summary, summary_large_image) - SEO title and description tags - One-click copy HTML to clipboard --- ### UTM Builder **URL:** https://socialpreviewhub.com/utm-builder Create UTM-tagged tracking links for marketing campaigns. Set source, medium, campaign, content, and term parameters. Copy the generated URL and track campaign performance in Google Analytics. **Features:** - UTM source, medium, campaign parameters - Content and term parameters - One-click copy generated URL - Campaign link history --- ### Bio Generator **URL:** https://socialpreviewhub.com/bio-generator Generate professional social media bios for any platform. Choose from industry-specific templates, stay within character limits, and get copy-paste-ready bios. **Features:** - Multiple bio templates - Industry-specific options - Character limit awareness per platform - Copy & paste ready output --- ### Caption Generator **URL:** https://socialpreviewhub.com/caption-generator Generate engaging captions for Instagram, TikTok, LinkedIn, and more. Choose from multiple tones and styles, get hashtag suggestions, and include call-to-action templates. **Features:** - Platform-specific caption generation - Multiple tones and styles - Hashtag suggestions - CTA templates included --- ### Emoji Picker **URL:** https://socialpreviewhub.com/emoji-picker Browse the full emoji library organized by category or search by name and keyword. One-click copy any emoji to your clipboard for use in social media posts. **Features:** - Full emoji library - Search by name or keyword - Category browsing - One-click copy to clipboard --- ### Image Color Extractor **URL:** https://socialpreviewhub.com/image-color-extractor Extract dominant colors from any image to create brand color palettes. Upload logos, product photos, or mood boards and get HEX and RGB values instantly. **Features:** - Upload any image (PNG, JPG, WebP) - Extract 6 dominant colors - Copy HEX and RGB values - Social media brand color presets --- ### Color Palette Generator **URL:** https://socialpreviewhub.com/color-palette-generator Generate color palettes with shades, tints, and color harmonies from any base color. Create complementary, analogous, triadic, split-complementary, and tetradic color schemes. Perfect for design systems and brand guidelines. **Features:** - 6 palette types: Shades, Complementary, Analogous, Triadic, Split-Complementary, Tetradic - Custom shade count (5, 7, 9, or 11 shades) - Color picker with 18 preset swatches - Export as CSS variables, SCSS, Tailwind config, JSON, or Design Tokens - HEX, RGB, and HSL values for each color --- ### QR Code Generator **URL:** https://socialpreviewhub.com/qr-code-generator Generate QR codes for URLs, WiFi networks, contacts (vCard), email, SMS, phone numbers, and plain text. Customize colors and download as PNG or SVG. **Features:** - 7 QR code types (URL, WiFi, vCard, email, SMS, phone, text) - Custom foreground and background colors - PNG and SVG download - WiFi network sharing - vCard contact sharing --- ### Device Mockup Generator **URL:** https://socialpreviewhub.com/device-mockup Upload a screenshot and wrap it in realistic device frames. Choose from 7 devices: iPhone 16 Pro Max, Galaxy S24 Ultra, Pixel 9 Pro, iPad Pro, MacBook Pro, Chrome browser, and Safari browser. Customize background color or gradient, shadow intensity, padding, and frame color. Download as a high-quality 2x PNG. **Features:** - 7 device frames (iPhone 16 Pro Max, Galaxy S24 Ultra, Pixel 9 Pro, iPad Pro, MacBook Pro, Chrome, Safari) - Multiple frame color options per device (titanium black, silver, gold, natural, etc.) - Solid color and gradient backgrounds with presets - Adjustable shadow toggle and intensity - Adjustable padding - High-quality 2x PNG export - Drag-and-drop image upload --- ### Chat Screenshot Generator **URL:** https://socialpreviewhub.com/chat-generator Create realistic conversation screenshots for WhatsApp, Instagram DM, and Facebook Messenger. Customize every detail including themes, avatars, reactions, and timestamps, then export high-quality PNG images for content creation, mockups, and tutorials. **Features:** - WhatsApp, Instagram DM, and Facebook Messenger support - Dark mode and light mode themes - Custom participant names and avatar images - Emoji reactions on any message - Customizable timestamps and read receipts - Phone status bar settings (time, signal, battery, WiFi) - High-quality 2x PNG export - Shareable draft links --- ### WhatsApp Chat Generator **URL:** https://socialpreviewhub.com/fake-whatsapp-chat-generator Create realistic fake WhatsApp chat screenshots with the signature green sent bubbles, double blue tick read receipts, dark mode, and timestamps. Customize messages, reactions, and participant names, then export as high-quality PNG. Perfect for content creation, marketing mockups, tutorials, and social media posts. **Features:** - Pixel-perfect WhatsApp chat interface - Dark mode and light mode support - Double blue tick read receipts (toggleable) - WhatsApp-style green sent bubbles and white received bubbles - Bubble tails matching real WhatsApp design - Emoji reactions on individual messages - Customizable timestamps and message grouping - High-quality 2x PNG export - Entirely client-side — no data sent to servers --- ### Instagram Chat Generator **URL:** https://socialpreviewhub.com/fake-instagram-chat-generator Create realistic fake Instagram DM screenshots with the signature purple-to-orange gradient sent bubbles, dark mode, "Seen" receipts, and emoji reactions. Customize every detail and export a crisp PNG for content creation, mockups, and social media posts. **Features:** - Pixel-perfect Instagram DM interface - Purple-to-orange gradient sent bubbles - Dark mode and light mode support - "Seen" read receipts (toggleable) - Emoji reactions on individual messages - Customizable timestamps and message grouping - High-quality 2x PNG export - Entirely client-side — no data sent to servers --- ### Barcode Generator **URL:** https://socialpreviewhub.com/barcode-generator Generate industry-standard barcodes in 7 formats: Code 128, EAN-13, UPC-A, Code 39, EAN-8, ITF-14, and Pharmacode. Customize bar width, height, colors, text display, font size, and alignment. Download as high-resolution PNG or vector SVG. All barcodes are generated client-side with real-time input validation per format. **Features:** - 7 barcode formats (Code 128, EAN-13, UPC-A, Code 39, EAN-8, ITF-14, Pharmacode) - Real-time input validation per format - Customizable bar width, height, and margins - Show/hide text with font size and alignment options - Custom foreground and background colors with presets - PNG and SVG download - Shareable draft links --- ### Social Media Image Resizer **URL:** https://socialpreviewhub.com/social-media-image-resizer Resize and crop images to the exact dimensions required by Instagram, Facebook, Twitter/X, LinkedIn, YouTube, TikTok, and Pinterest. Supports 17 preset sizes for posts, stories, banners, covers, and thumbnails with batch download. **Features:** - 7 platforms supported (Instagram, Facebook, Twitter/X, LinkedIn, YouTube, TikTok, Pinterest) - 17 preset sizes (posts, stories, banners, covers, thumbnails) - Batch download multiple sizes at once - High-quality Sharp image processing - Drag-and-drop upload --- ## Calculators ### Engagement Rate Calculator **URL:** https://socialpreviewhub.com/engagement-rate-calculator Calculate engagement rate for any social media platform. Supports three calculation methods (by followers, by reach, by impressions) with platform-specific benchmarks for Instagram (1.5-3.5%), TikTok (3-9%), LinkedIn (2-5%), and more. **Features:** - Three engagement rate formulas - Platform-specific benchmarks - Performance ratings (Low to Viral) - Account size tier comparisons --- ### Instagram Earnings Calculator **URL:** https://socialpreviewhub.com/instagram-earnings-calculator Estimate Instagram earnings per post, story, and reel based on follower count, engagement rate, and niche. Includes CPM rates and sponsorship deal estimates. **Features:** - Post, story, and reel earnings estimates - Niche-based CPM rates - Engagement-adjusted pricing - Monthly and annual projections --- ### YouTube Revenue Calculator **URL:** https://socialpreviewhub.com/youtube-revenue-calculator Estimate YouTube ad revenue from views and CPM rates. Supports different content categories with region-specific CPM ranges. **Features:** - Revenue estimation from views - Category-specific CPM rates - Monthly and annual projections - Ad format breakdowns --- ### TikTok Engagement Calculator **URL:** https://socialpreviewhub.com/tiktok-engagement-calculator Calculate TikTok engagement rate from views, likes, comments, and shares. Includes performance ratings and cross-platform benchmark comparisons. TikTok uses view-based engagement (not follower-based) because the algorithm distributes content beyond a creator's follower base. **Features:** - View-based engagement rate calculation - Performance ratings (Low to Viral) - Cross-platform benchmark comparisons - Creator tier analysis (nano to mega) --- ### Best Time to Post **URL:** https://socialpreviewhub.com/best-time-to-post Find the optimal posting times for each social media platform based on audience activity data. Covers LinkedIn, Instagram, Twitter/X, TikTok, Facebook, and YouTube. **Features:** - Platform-specific optimal posting windows - Day-of-week analysis - Time zone support - Industry-specific recommendations --- ### Follower Growth Calculator **URL:** https://socialpreviewhub.com/follower-growth-calculator Track follower growth rate and project future follower growth over time. Supports weekly, monthly, and yearly growth projections. **Features:** - Growth rate calculation - Future follower projections - Growth trend visualization - Milestone date estimates --- ### Social Media ROI Calculator **URL:** https://socialpreviewhub.com/social-media-roi-calculator Calculate return on investment for social media marketing campaigns. Track costs (ad spend, tools, labor) against revenue and conversions. **Features:** - ROI percentage calculation - Cost tracking (ad spend, tools, labor) - Revenue attribution - Campaign comparison --- ### Hashtag Reach Estimator **URL:** https://socialpreviewhub.com/hashtag-reach-estimator Estimate potential reach and impressions from hashtags across social media platforms. Analyzes hashtag competition and suggests optimal hashtag combinations. **Features:** - Reach estimation by hashtag - Competition analysis - Optimal hashtag mix suggestions - Platform-specific recommendations --- ## Frequently Asked Questions **Is SocialPreviewHub really free?** Yes, all tools are 100% free. No signup, no account, no credit card, no hidden fees. **Do you store my data?** No. All processing happens in your browser. We don't store your posts, images, or any personal data on our servers. **What platforms are supported?** LinkedIn, Twitter/X, Facebook, Instagram, TikTok, YouTube, and Pinterest. **Can I use this for client work?** Absolutely. Use the shareable draft links to send post previews to clients for review without them needing to sign up. **Is there an API?** Currently SocialPreviewHub is a web-based tool only. There is no public API. **How does it compare to Taplio or AuthoredUp?** SocialPreviewHub offers post preview, carousel generation, safe zone testing, text formatting, shareable drafts, and multi-platform support — all for free. Taplio ($39/mo) and AuthoredUp ($15/mo) offer fewer features at a cost. --- ## Links - Website: https://socialpreviewhub.com - All Tools: https://socialpreviewhub.com/tools - Blog: https://socialpreviewhub.com/blog - About: https://socialpreviewhub.com/about - llms.txt: https://socialpreviewhub.com/llms.txt