utility Platform Tool

Add White Outline to Animated GIF & Sticker

Create the iconic physical die-cut sticker look with an automatic white contour border. Guarantees your emoji looks stunning on both black and white themes.

Die-Cut Contour StrokeDark Theme VisibilityCustom Border WidthInstant In-Browser Processing

Upload GIF or Video to Convert

Drop any GIF or MP4/WebM video. 100% in-browser processing, private & instant. Converts directly to Discord, Slack, Twitch, and Telegram specs.

Supports .gif, .mp4, .webm up to 50MB

AI Transparent Cutout2 Credits

Remove complex backgrounds with neural AI. Smooth edges without white fringe.

Platform Settings

iMessage Animated Sticker

Target Size Limit≤ 250 KB

Standard for iMessage✓ Auto-Locked

Presets:

White Sticker OutlineDie-cut border visible on dark themes

Meme Caption Overlay

iMessage Standard Specs

Dimension:408 × 408 px (Regular @3x)

Max Weight:≤ 500 KB (Xcode hard limit)

Frame Limit:Recommended ≤ 45 frames

Format:APNG (Lossless alpha)

⚡ 30-Second Spec Cheat Sheet: Add White Outline to Transparent GIF (Die-Cut Sticker) Compliance Rules

Requirement	Strict Limit	Technical Notes & Why It Fails
Canvas Resolution	Original or Scaled	Square 1:1 prevents black letterboxing bars; retina display at 128px.
Maximum File Size	Optimized GIF / APNG	Strict binary byte check. Upload fails immediately if 1 byte over.
Frame Count / FPS	All frames contoured	Auto-delay compensation preserves animation speed when frames are reduced.
Output Format	GIF or APNG	Optimized palette quantization and transparency masking.

Visual Proof: Real-World Optimization & Cutout Result

Black/Dark Subject

Invisible on Discord Dark Theme

Dark characters completely vanish against dark gray Discord/Slack UI

With White Die-Cut Border

Pops on all background colors

High-contrast white outline defines the character on any theme

How to Use Add White Outline to Transparent GIF (Die-Cut Sticker) (3 Simple Steps)

Upload transparent GIF or sticker

Upload your transparent animated GIF.

Adjust outline thickness

Pick stroke width (2px to 8px) and outline color.

Download stickered GIF

Download your die-cut sticker ready for Discord or iMessage.

Troubleshooting & Common Platform Errors

Can I change the outline color from white to another color?

Yes, EmoteGen allows you to choose any hex color, including neon glow or pastel shades.

Frequently Asked Questions

Does the outline work across animated frames?

Yes, the canvas dilation algorithm applies dynamically to every single frame of your animation.