--- title: "slack-gif-creator skill: animated emoji and GIFs for Slack" canonical_url: https://cookiesforai.app/skills/anthropics/slack-gif-creator last_updated: 2026-10-02T01:58:30+02:00 type: skill summary: "Slack GIF Creator is Anthropic's open-source agent skill for animated GIFs sized for Slack: the agent draws the frames in Python, adds motion and checks the file meets Slack's limits." install: "/plugin marketplace add anthropics/skills" related: - "https://cookiesforai.app/skills/heygen-com/hyperframes" - "https://cookiesforai.app/skills/remotion-dev/remotion-best-practices" - "https://cookiesforai.app/skills/bradautomates/watch" - "https://cookiesforai.app/skills/anthropics/algorithmic-art" - "https://cookiesforai.app/skills/anthropics/academy-guide" - "https://cookiesforai.app/skills/anthropics/brand-guidelines" - "https://cookiesforai.app/skills/anthropics/canvas-design" - "https://cookiesforai.app/skills/anthropics/claude-api" --- # Slack GIF Creator Slack GIF Creator is Anthropic's open-source agent skill for animated GIFs sized for Slack: the agent draws the frames in Python, adds motion and checks the file meets Slack's limits. | Fact | Value | |---|---| | Publisher | Anthropic (official, own GitHub account) | | Source | https://github.com/anthropics/skills/tree/HEAD/skills/slack-gif-creator | | License | Apache-2.0 | | Repository stars | 179,326 on 2026-10-02 | | Skill name | slack-gif-creator | | Category | Video, images and media | | Skill last changed | 2026-04-20 | | Page updated | 2026-10-02 | | Facts checked | 2026-10-02 | ## Install In Claude Code, add Anthropic's skills marketplace: ``` /plugin marketplace add anthropics/skills ``` Then install the example-skills plugin, which holds this skill and Anthropic's other example skills: ``` /plugin install example-skills@anthropic-agent-skills ``` Or install only this skill, for any agent, with the skills CLI: ``` npx skills add anthropics/skills --skill slack-gif-creator ``` In Claude.ai, Anthropic says its example skills are already available on paid plans: switch them on under Customize > Skills. ## Ask your coding agent A skill can include scripts that run on your computer, so read its source first: https://github.com/anthropics/skills/tree/HEAD/skills/slack-gif-creator ```text Install the agent skill slack-gif-creator from github.com/anthropics/skills. ``` ## What it does Slack GIF Creator is an Anthropic skill for making animated GIFs to use in Slack, as custom emoji or in messages. It loads on requests such as "make me a GIF of X doing Y for Slack". It sets the targets: 128 by 128 pixels for emoji and 480 by 480 for message GIFs, 10 to 30 frames per second, 48 to 128 colors, and under three seconds for emoji. With Slack GIF Creator, the agent draws each frame with Python's Pillow library, using shapes such as circles, polygons and lines rather than emoji fonts or stock graphics. It can also animate an image you upload or use it as a reference. The skill describes animation patterns (shake, pulse, bounce, spin, fade, slide, zoom and particle bursts) and asks for thicker lines, gradients and layered shapes so the result does not look like placeholder art. Slack GIF Creator's bundled Python modules assemble frames into an optimized GIF, provide easing curves for smoother motion, offer helpers for backgrounds, circles, stars and text, and validate whether a file is ready for Slack. They need pillow, imageio and numpy. File size is reduced only when you ask, through fewer frames, fewer colors, smaller dimensions or dropped duplicate frames. ## When to use it - You want a custom animated emoji for your team's Slack. - You want a short reaction GIF of an idea, such as a shape that bounces or a star that bursts. - You have an image and want it animated for Slack. - Your GIF is too large for Slack and you need a smaller file. ## When to pick something else - You want a still poster or image: use Canvas Design. ## Which agents it works in Anthropic documents it for Claude Code, Claude.ai, Claude API. The open skills CLI also installs it into 78 agents (listed with the CLI on 2026-10-01). ## License Apache-2.0. Apache-2.0 comes from the LICENSE.txt in the skill's own folder (read 2026-10-01); the anthropics/skills repository has no root license file. In practice you may use, change and share the skill in any agent, commercially too, as long as you keep the license text and notices and mark your changes. ## Related ### Related skills for video, images and media - [HyperFrames](https://cookiesforai.app/skills/heygen-com/hyperframes): hyperframes is HeyGen's entry-point agent skill for HyperFrames, its open-source framework that renders HTML, CSS and animations into MP4 video; it captures your brief and routes to the right video workflow. - [Remotion best practices](https://cookiesforai.app/skills/remotion-dev/remotion-best-practices): remotion-best-practices is Remotion's own agent skill and the entry point to its other video skills: it routes an agent to the right guide for creating, previewing, captioning and rendering Remotion videos in React. - [Watch](https://cookiesforai.app/skills/bradautomates/watch): Watch is an open-source agent skill that turns a video link or file into frames and a transcript, or hands it to Google's Gemini, so your agent can answer questions about it. - [Algorithmic Art](https://cookiesforai.app/skills/anthropics/algorithmic-art): Algorithmic Art is Anthropic's open-source agent skill for generative art: the agent writes a short art philosophy, then builds an interactive p5.js piece with seeds and parameter sliders. ### More from Anthropic - [Academy Guide](https://cookiesforai.app/skills/anthropics/academy-guide): Academy Guide is Anthropic's agent skill that ends Claude's answers about using Claude with one or two matching Claude Academy courses or tutorials, and only when the match is strong. - [Brand Guidelines](https://cookiesforai.app/skills/anthropics/brand-guidelines): Brand Guidelines is Anthropic's open-source agent skill that holds Anthropic's own brand colors and fonts, so an agent can give a document, slide deck or web artifact the Anthropic look. - [Canvas Design](https://cookiesforai.app/skills/anthropics/canvas-design): Canvas Design is Anthropic's open-source agent skill for static visual work: the agent writes a design philosophy, then makes a poster or art piece as a finished PNG or PDF file. - [Claude API](https://cookiesforai.app/skills/anthropics/claude-api): Claude API is Anthropic's open-source agent skill for code that calls Claude: current model IDs and prices, guides for seven SDK languages plus cURL, and guided migrations to newer models.