Telegram has evolved beyond messaging into a powerful broadcast platform, with channels reaching millions of subscribers and generating engagement rates that rival or exceed traditional social media. But Telegram's image display is unique: in channel feeds, images appear as full-width cards with a 16:9 or similar landscape crop in the preview, and subscribers tap to expand to full resolution. This means your image grid must work at two scales simultaneously — compelling as a cropped preview thumbnail, and detailed when expanded. The optimal Telegram channel grid configurations: a 1×3 horizontal grid at 2048×1024px for landscape preview — Telegram crops the top and bottom in feed preview, but the horizontal 1×3 layout ensures at least 2 of 3 cells are visible in the cropped thumbnail. A 2×2 square grid at 2048×2048px for detailed content that benefits from being viewed in full — subscribers will tap to expand, and the square format fills the screen beautifully on mobile. A 2×3 grid at 2048×1365px for information-rich updates — news roundups, product showcases, event photo collections. For news and media channels, a 1×3 grid showing three related headlines or images in one post gives subscribers a scannable visual summary that outperforms single-image posts in click-through rates. For brand and product channels, a 2×2 product showcase grid lets subscribers see multiple items at once — driving direct messages and purchase inquiries. For community and event channels, a 2×3 event recap grid tells the complete story in one post without flooding subscribers' feeds with multiple messages. Telegram-specific optimization: export at 2048px width — this is the maximum resolution Telegram displays without triggering its aggressive compression for larger files. Use PNG format for sharp text and clean edges. Add 4–6px cell spacing so images read clearly in both cropped preview and full expanded view. MergeFrame's local processing is valued by Telegram channel admins who manage sensitive content — political commentary, financial analysis, competitive intelligence — where uploading images to a third-party server would be a security risk.