Practical, up-to-date guides on thumbnails, Shorts, audio quality, subtitles, and content repurposing — written for creators who use our free tools.
YouTube now recommends 3840×2160 thumbnails — not 1280×720. Learn the current specs, safe zones, CDN sizes, and how to design thumbnails that work on mobile.
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YouTube Shorts can be up to 3 minutes in 2026. Get the full specs — resolution, aspect ratio, safe zones, and why your vertical video might not appear in the Shorts feed.
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YouTube stores audio as Opus or AAC — not MP3. Learn why 320 kbps doesn't help, what generation loss means, and which bitrate to use when converting YouTube to MP3.
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SRT or VTT? Learn the differences, when to use each format, how to upload subtitles to YouTube, fix auto-caption errors, and translate subtitle files correctly.
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Repurpose one long-form YouTube video into blog posts, Shorts clips, podcast audio, and social posts. A step-by-step workflow that takes under three hours.
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