YouTube to TikTok slides: turn any video into 9:16 slide posts

Why slides beat clips for repurposing

A single YouTube video usually contains five to ten quotable ideas. Chopping the raw footage into clips is slow, and short attention spans on TikTok, Reels, and Shorts reward text-first visuals more than talking-head cuts. A 9:16 slide carousel lets a viewer read at their own pace, screenshot the good stuff, and reshare it — which the algorithms notice.

Generic AI presentation makers weren't built for this. They output 16:9 decks aimed at boardrooms. Slidecast is a specialized AI slide generator that outputs vertical, editable slides tuned for social — same input (a transcript), completely different output.

Step 1 — Get the transcript

Open the YouTube video, click More → Show transcript, copy the text, and paste it into Slidecast. If you'd rather skip the copy-paste, paste the video URL and Slidecast pulls the transcript for you.

Step 2 — Generate the deck

Click Generate slides. Slidecast's AI picks the hook, the three-to-seven strongest ideas, and a CTA — then assigns a deck-wide theme (background, text, accent) that matches the topic. You get an editable 9:16 deck in seconds, not a wall of identical white cards.

Step 3 — Tighten the copy

Every slide has a short label, a headline, and a body line. Edit each in the Content card on the right. Rule of thumb: label is the category ("Tip 3 of 6"), headline is the payoff, body line is the supporting detail. Move the text position with the alignment row — top-left works well for portrait photos, center for solid-color slides.

Step 4 — Style the deck

Use the Style card to change background, text, and accent colors per slide, or hit Apply style to all to push one slide's palette across the deck. Mix a couple of inverted or accent-colored slides in for rhythm — a monotone carousel reads as spammy.

Step 5 — Add imagery

The Image card supports uploads and Pexels search without leaving the editor. Search for a portrait stock photo, pick one, and the slide's layout switches to a photo + text composition automatically.

Step 6 — Export and post

Download individual slides or the entire deck as a ZIP of 1080×1920 PNGs. Upload the deck as a TikTok photo carousel, an Instagram Reels carousel, or a YouTube Shorts image post. Pin the strongest slide as the cover.

Slidecast vs generic AI presentation makers

• Aspect ratio. Built for 9:16, not 16:9 forced into a phone frame.
• Transcript-native. Optimized for spoken-word input, so a video script becomes a real carousel, not a bulleted outline.
• Editable output. Every slide is fully editable — copy, layout, colors, imagery — not a locked PDF export.
• Social-first exports. PNGs at the exact dimensions TikTok, Reels, and Shorts want.