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全部文章Best Image Sizes for Instagram, YouTube & More (2026)Recommended image sizes and aspect ratios for Instagram feed/stories, YouTube thumbnails, and more — plus how to crop to the right ratio instantly.How to Make a Circle Crop (Round Profile Picture)How to crop an image into a circle with a transparent background — profile pictures, avatars, and logos, free in your browser, no install.How to Compress Video Without Ruining QualityHow to shrink video so it fits email and messenger limits — CRF and codec settings, plus tips for keeping quality.