Developer Utility Belt

Debug the Web,
One Tag at a Time.

A curated collection of free tools to help you validate metadata, fix broken previews, and optimize your site for the Social Web.

Social Media

Preview how your links appear on Twitter/X timeline. Supports Summary and Large Image cards.

Simulate Facebook Crawler. Clear cache and fix missing thumbnails on Facebook shares.

Troubleshoot LinkedIn link previews. Force re-scrape and validate metadata for professional sharing.

Visualize links in TikTok DMs. Verify cover image ratios for viral content.

Validate strict 300KB image limits and square aspect ratios for WhatsApp sharing.

Test Instant View compatibility and large media previews for Telegram channels.

Fix broken link unfurls in Slack. Debug title and thumbnail parsing.

Preview Discord embeds without spamming servers. Test colors, fields and footer text.

Stop manually checking every URL. Use our API to integrate these checks directly into your CMS or workflow.