slack-gif-creator

Slack-optimized GIFs require strict adherence to constraints: message GIFs max ~2MB at 480x480, 15–20 FPS, 2–5s duration; emoji GIFs max 64KB at 128x128, 10–12 FPS, 1–2s. This Skill automatically validates dimensions, frame rates, and file size, applying color reduction (128–256 colors for messages, 32–48 for emojis) to meet limits without manual optimization.

The Skill provides composable animation primitives including shake, bounce, spin, pulse, fade, zoom, explode, wiggle, and slide. Stack these templates to create complex motion sequences, then the builder validates the output meets Slack's duration and size constraints before export.

Yes. The Skill specializes in aggressive optimization for emoji GIFs, using aggressive color quantization and frame reduction to fit the challenging 64KB constraint at 128x128 resolution while maintaining visual clarity for chat display.

The Skill uses Pillow for image manipulation, imageio for GIF encoding and frame handling, and NumPy for pixel-level array operations. These dependencies enable frame generation, color reduction, and efficient GIF composition within Slack's technical constraints.

The Skill reports output metadata including size_kb, size_mb, frame_count, and duration_seconds. Use these values to verify compliance: message GIFs should be under ~2MB with 2–5s duration; emoji GIFs under 64KB with 1–2s duration, then upload directly to Slack.

Layer animation primitives sequentially—for example, bounce + wiggle or spin + fade—using the composable toolkit. The builder automatically manages frame synchronization and applies color reduction across all frames to ensure the final output stays within Slack's size and duration limits.