Design & Marketing Tools
OG Image Preview
Preview how your URL will appear when shared on Facebook, Twitter, LinkedIn, and WhatsApp.
Run OG Image Preview online
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Open Graph image preview tools simulate how your URL appears when shared on social media platforms — Facebook, Twitter/X, LinkedIn, Instagram, and WhatsApp. Each platform has specific requirements for image dimensions, aspect ratios, and character limits for title and description. Without testing, you cannot predict how a link will appear when shared — a poorly configured OG image can result in cropped images, missing previews, or text overflow that makes shared links look unprofessional.
Platform-specific OG preview requirements: Facebook — 1200×630px image (1.91:1 ratio), title up to 100 chars (truncated at ~40 in compact view), description up to 300 chars. Twitter/X — two card types: 'summary' (1:1 square image, small preview) and 'summary_large_image' (1200×628px, large hero preview); title up to 70 chars. LinkedIn — 1200×627px, article title up to 100 chars. WhatsApp — uses og:image (any size but centers/crops to 1:1), shows title and domain. Each platform caches OG tags — new tags require cache clearing via platform-specific developer tools before they reflect.
Common OG preview failures seen in Indian web projects: using relative image URLs (breaks on all platforms), using small images below 200×200px (platforms ignore them), missing og:type tag causing classification as generic website, outdated cached previews (platform cached old image before update), og:image not publicly accessible (behind login or firewall), and missing twitter:card tag (causing Twitter to fall back to basic link display without image). A proper OG preview testing workflow should be part of every web launch checklist.
How to use this utility
- Use the controls below—paste text, pick files, or adjust options as described on the tool.
- Click the main action button. Processing runs in your browser on this device.
- Download or copy the output. Check the processing note for any external services used by this operation.
Common use cases
- Testing how a startup's homepage appears when shared on LinkedIn before a Product Hunt launch
- Verifying WhatsApp preview of a Diwali sale campaign landing page shows the correct offer image and text
- Debugging why a news article shares without image on Facebook despite having og:image tag set
- Comparing Twitter/X summary vs summary_large_image card types to choose better presentation
- Validating that a new blog post's Open Graph data is correctly implemented across all major platforms
Tips for best results
- 1Use Facebook's Sharing Debugger (developers.facebook.com/tools/debug) to scrape and refresh Facebook's cache after changing OG tags — Facebook caches aggressively
- 2Test OG images on both light and dark mobile themes — many images look fine on desktop but read poorly on mobile dark mode WhatsApp previews
- 3Include your brand name or logo in the og:image itself — when the URL is shared, the image is the first thing seen; brand recognition in the image increases click-through
- 4For e-commerce product pages, generate dynamic OG images with the product photo, price, and brand — static OG images the same across all pages are a missed opportunity
- 5LinkedIn's Post Inspector (linkedin.com/post-inspector) specifically refreshes LinkedIn's cache — Facebook and LinkedIn cache separately and both must be cleared after OG changes
Frequently asked questions
- Is Konnect2Tools free?
- Yes. These in-browser tools are completely free to use with no account required for core functionality.
- Do my files leave my device?
- Browser document operations run locally, except where the operation uses an external service, such as AI summarisation. Read the processing note before using sensitive inputs.
- Is the OG Image Preview tool safe to use?
- Local operations process document content on your device. External-service operations may send inputs as described in the processing note. Keep originals and inspect the output.
- Why does my OG image not show when sharing a link on WhatsApp?
- Common reasons OG image fails on WhatsApp: (1) Image URL is relative (e.g., /images/banner.jpg) instead of absolute (https://www.site.com/images/banner.jpg); (2) Image is behind authentication or a firewall — WhatsApp crawler cannot access it; (3) Image size is below 200×200px — WhatsApp minimum; (4) Image server blocks non-browser user agents (WhatsApp crawler uses specific UA); (5) og:image tag is missing or has syntax error; (6) HTTPS mixed content — og:image URL is HTTP while site is HTTPS; (7) CloudFlare or CDN caching with aggressive cache-control headers preventing WhatsApp crawler access. Debug by checking the image URL directly in incognito mode — if it loads, WhatsApp should also be able to access it.
- How do I refresh the OG preview cache on social platforms?
- Each platform has specific cache clearing tools: Facebook/Meta: Facebook Sharing Debugger (developers.facebook.com/tools/debug) — enter URL, click Fetch New Scrape. LinkedIn: Post Inspector (linkedin.com/post-inspector) — enter URL, click Inspect. Twitter/X: Card Validator (cards-dev.twitter.com/validator) — enter URL, click Preview Card. Pinterest: does not have a manual refresh tool; cache expires automatically in 24-48 hours. WhatsApp: no manual cache clearing; WhatsApp caches for 24 hours; wait or use a new URL with cache-busting query parameter (e.g., ?v=2). Telegram: automatic; paste the link in a new message — Telegram fetches fresh OG data for each new link paste.
- What image dimensions should I use for OG images?
- Recommended dimensions by platform: Facebook — 1200×630px (1.91:1). Twitter/X summary_large_image — 1200×628px. LinkedIn — 1200×627px. WhatsApp — 1200×630px (same as Facebook). General recommendation: use 1200×630px as the universal size — works acceptably on all platforms. The image should have a content-safe zone of 1080×540px centered in the 1200×630px canvas — text and critical visuals in this zone avoid cropping on platforms that slightly vary their display. File format: JPEG preferred (smaller file size). Maximum file size: keep under 1MB — larger files may cause preview timeout or lower quality re-compression by the platform.
- How do I generate dynamic OG images for my website?
- Dynamic OG image generation methods for modern web: (1) Vercel/Cloudflare Workers OG image generation — use @vercel/og or similar libraries to generate images on-the-fly based on URL parameters; (2) Puppeteer headless browser screenshot — render an HTML template and screenshot it; (3) Cloudinary text overlays — if hosting images on Cloudinary, use their URL-based transformation API to add dynamic text to base images; (4) Canvas API — server-side canvas rendering (Node.js canvas library). For Indian small businesses: simpler approach — create 5-10 templatized OG images in Canva for different page categories (product, blog, offer) and manually assign them via CMS. Dynamic generation is worth the engineering investment only for sites with 100+ unique page types.
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