Comp Resizer reframes your After Effects comps to any aspect ratio — vertical, square, widescreen, or custom — in one click. Every layer repositions and rescales to fit the new frame. No rigging, no rebuilding, no baked precomps.

Why Comp Resizer Not just a bigger canvas Change a comp's dimensions in After Effects and your layers stay exactly where they were — half of them now off-frame. Comp Resizer repositions and rescales every layer to fit, so a 16:9 master becomes a clean 9:16 in one click instead of a cropping puzzle.

Nothing to set up No responsive rigs, no expression controllers, no pre-tagging your layers. Point it at any existing comp and resize — including projects you built months ago.

Hours of Resizing Done in Seconds Stop spending hours resizing your content for TikTok, Instagram, or YouTube. CompResizer adapts your creative assets for every platform in seconds, giving you your valuable time back.

Smart Presets Jump straight to the formats you use most — 9:16, 1:1, 4:5, 16:9, 4K UHD, 720p — or enter any custom width and height.

Fill, Fit, or Stretch Choose how content adapts to the new frame: crop to fill it, letterbox to fit it fully, or stretch to match exactly.

Precise Alignment A 3×3 anchor grid controls exactly where your content sits in the new frame — so you decide what stays inside the visible area and what falls outside it.

Duplicate-Safe Resize a copy and keep your original composition untouched, or resize in place — your call.

Aspect Ratio Lock Type a width, get a proportional height automatically — or unlock it and set both independently.

Non-Destructive Comp Resizer never bakes, precomposes, or flattens your layers. It temporarily parents them to a rig, applies the new scale and position, then releases the rig — your effects and keyframes stay exactly as they were. Every resize runs inside a single undo group: one Cmd/Ctrl+Z and you're back.

Open your comp Select the composition you want to reframe. Pick a size Choose a preset or enter custom dimensions, then set how content should scale. Click Resize Every layer repositions and rescales automatically. Done in seconds.