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Media Strategy
Best Image Formats for Web Publishing, Mobile Apps & Social Media
DexImage Content Lab• August 2026• 6 min read
Mastering Social Media Image Requirements
Social media networks enforce aggressive auto-compression algorithms when uploaded files exceed exact target dimensions. Pre-formatting assets guarantees crisp display.
Quick Dimensions Cheat Sheet
Optimal specifications for major platforms:
- Instagram Feed Square: 1080 × 1080 px (1:1)
- Instagram Feed Portrait: 1080 × 1350 px (4:5)
- Instagram Story & Reel: 1080 × 1920 px (9:16)
- YouTube Thumbnail: 1280 × 720 px (16:9, < 2MB)
- Facebook Cover Photo: 820 × 312 px
- LinkedIn Banner: 1584 × 396 px (4:1)
Put This Into Practice with Free Browser Tools
Dex Labs Network Ecosystem
Complete Your Digital Workflow Across Dex Labs Tools
Dex Labs builds a network of fast, privacy-focused browser tools designed for productivity, finance, conversion, and image optimization. Explore the full Dex Labs ecosystem for related utilities:
- DexText — Use professional text tools for drafting articles and captions.
- DexCalc — Access financial calculators for project estimation and ROI.
- DexConvert — Open unit conversion tools for dimension and currency math.
- DexImage — Try browser-based image optimization tools for web publishing.