Slack GIF Maker: Create & Send Animated GIFs in Slack

> Quick answer: A Slack GIF maker lets you create or find animated GIFs to use in Slack — either as custom emoji (must be 128×128 px, under 128 KB) or directly in chat messages. AnimGifMoji is a free browser-based Slack GIF maker: search Tenor, resize, and upload custom animated emoji in minutes with no sign-up required.

Animated GIFs have become the universal language of workplace humor, celebration, and expression. Whether you want to drop a dancing banana into the team chat or upload a perfectly looped applause emoji, a good Slack GIF maker is the tool that makes it happen. Use Slack GIF Creator: How to Make Custom Animated Emojis for Slack for easy conversion. This guide covers everything: finding GIFs, creating custom emoji, sending animated content in Slack chat, and understanding the key differences between each use case.

What Is a Slack GIF Maker and Why Do You Need One

A Slack GIF maker is any tool that helps you find, resize, convert, or create animated GIF content specifically for Slack. "Slack GIF maker" can mean different things depending on what you're trying to do: Animated Slack Emoji Maker: Complete Guide for Teams makes this process fast and free.

• Custom emoji makers — resize and optimize GIFs so they meet Slack's 128×128 px and 128 KB requirements for custom workspace emoji
• GIF search tools — search Tenor, Giphy, or other libraries and paste links directly into Slack chat
• GIF creators — tools like Photoshop, ScreenToGif, or Canva that let you build a GIF from scratch
• All-in-one tools — platforms like AnimGifMoji that combine search, resize, crop, and export in one workflow

The reason you need a dedicated tool — rather than just grabbing any GIF file — is Slack's strict size limits. For chat messages, almost any GIF works. But for custom emoji, Slack silently rejects files that are too large or the wrong dimensions. Use Slack Animated Emoji Maker: Find, Convert & Upload GIFs Free for easy conversion. A Slack GIF maker handles those constraints for you automatically.

> ℹ️ Did you know? Slack supports animated GIFs in two completely different contexts: (1) as custom workspace emoji that appear in the emoji picker, and (2) as chat message attachments or links that play inline. The requirements, workflows, and tools for each are entirely different.

Types of GIF Content You Can Create for Slack

> 💡 Tip: AnimGifMoji's built-in Tenor search lets you find and convert GIFs to Slack emojis in one step — no manual downloading required.

Understanding the different types of GIF content you can add to Slack helps you choose the right tool and workflow.

Custom Emoji GIFs

Custom emoji are uploaded to your workspace's emoji library and become available to every member via the emoji picker (the smiley face icon). When a custom emoji is an animated GIF, it plays inline in messages wherever it's used.

Requirements:

• Maximum 128×128 pixels
• Maximum 128 KB file size
• Supported format: GIF (animated), PNG, JPG (static)
• Must be uploaded by a workspace admin or member with permission

Custom emoji are ideal for branded reactions, inside jokes, team mascots, and recurring celebration moments.

Chat Message GIFs

You can paste any GIF URL directly into a Slack message and it will play inline. Alternatively, Slack's built-in GIF search (powered by Tenor) lets you find and post GIFs without leaving the app.

Requirements for chat GIFs:

• No size limit enforced by Slack for pasted links
• File uploads are limited by your workspace's file upload limit (usually 1 GB per file)
• Inline preview works for most GIF URLs automatically

Stickers and Reactions

Slack doesn't have native sticker packs like WhatsApp, but large custom emoji (displayed with the emoji syntax) can function as stickers. Some teams create extra-expressive custom emoji specifically for use as reactions.

How to Find GIFs for Slack Using Tenor Search

> ⚠️ Warning: Slack silently rejects custom emoji files over 128KB. Always use AnimGifMoji to auto-compress your GIFs before uploading.

The fastest way to add an animated GIF to a Slack chat message is to use AnimGifMoji's Tenor search page. You can search, preview, and copy GIF URLs to paste directly into Slack — or download GIFs to convert them into custom emoji.

Steps to find a GIF for Slack chat:

1. Visit AnimGifMoji's Tenor search
2. Type a keyword (e.g., "celebration", "thumbs up", "party parrot")
3. Click a result to preview the animation
4. Copy the GIF URL or download the file
5. Paste the URL into any Slack message — it will render inline automatically

> 💡 Tip: When searching for GIFs to use as custom emoji, filter for shorter, looping animations with simple backgrounds. These compress better and stay under Slack's 128 KB limit more easily.

Slack's built-in GIF search (the GIF icon in the message composer) also uses Tenor, so the library is the same. The advantage of using AnimGifMoji's search is that you can immediately resize and convert a GIF into a custom emoji in the same session.

How to Make a Custom Emoji GIF for Slack with AnimGifMoji

AnimGifMoji is a free, browser-based Slack GIF maker that handles the full workflow: search Tenor, resize to 128×128, optimize to under 128 KB, and download a ready-to-upload emoji file. No account required.

Step-by-step instructions:

1. Open AnimGifMoji — Navigate to AnimGifMoji. The homepage loads the Slack emoji maker tool directly.
2. Search or upload a GIF — Use the built-in Tenor search to find an animated GIF by keyword, or click "Upload" to use your own GIF file from your device.
3. Preview the animation — AnimGifMoji previews the GIF before resizing so you can confirm you have the right one.
4. Select "Slack" as the target platform — This automatically sets the output to 128×128 px with 128 KB optimization.
5. Adjust the crop if needed — Use the crop handles to frame the most important part of the animation, especially for GIFs that aren't already square.
6. Click "Make Emoji" — AnimGifMoji resizes, crops, and compresses the GIF to meet Slack's exact specifications.
7. Download the file — Save the optimized GIF to your computer.
8. Upload to Slack — Go to your Slack workspace, navigate to Settings and Administration, then Customize Slack, then Emoji. Click "Add Custom Emoji", upload the file, and give it a descriptive name like party-parrot or team-celebration.

> ⚠️ Warning: Slack silently rejects custom emoji files over 128 KB — there's no error message, the upload just fails or hangs. Always use a Slack GIF maker like AnimGifMoji to compress your GIF before uploading. Do not assume that a GIF that "looks small" is under the limit.

The entire process from search to upload takes about two minutes. AnimGifMoji's Slack emoji maker page has a dedicated interface optimized for this exact workflow.

How to Send Animated GIFs in Slack Chat

Sending a GIF in a Slack chat message is a separate workflow from uploading a custom emoji. You don't need to resize or compress anything — Slack renders GIFs from URLs or file uploads at full quality.

Method 1: Use Slack's Built-In GIF Search

1. Open a Slack message composer in any channel or DM
2. Click the GIF icon in the toolbar (or type /giphy for the Giphy integration)
3. Search for a keyword
4. Click a result to post it

Method 2: Paste a GIF URL

1. Find a GIF on Tenor, Giphy, or another source
2. Copy the direct GIF URL (ending in .gif)
3. Paste it into a Slack message
4. Slack will render it inline as an animated preview

Method 3: Upload a GIF File

1. Click the attachment icon in the message composer
2. Select a GIF file from your device
3. The GIF will be uploaded and displayed as an animated preview

> ✅ Pro tip: When uploading custom emoji to Slack, name them descriptively and consistently. Use prefixes like tada- or reaction- to group related emoji together in search results. This makes your workspace emoji library much easier to navigate as it grows.

Note that custom emoji and chat GIF messages are completely independent features in Slack. Custom emoji must meet the 128×128 px and 128 KB spec and are added to the workspace library. Chat GIFs have no size restriction and are sent inline in messages without being stored in the emoji library.

Platform Comparison: Slack vs Discord vs Teams GIF Makers

If you use multiple platforms, it helps to understand how each handles GIF content:

Platform	Custom Emoji Size	Emoji File Limit	Animated Emoji?	Chat GIFs?
Slack	128×128 px	128 KB	Yes (all plans)	Yes (unlimited links)
Discord	128×128 px	256 KB	Nitro only (cross-server)	Yes (via Tenor/Giphy)
Teams	128×128 px	1 MB	Yes	Yes (via GIPHY integration)

Key differences:

• Slack has the tightest file size limit (128 KB) but supports animated custom emoji on all plans
• Discord allows larger files (256 KB) but animated custom emoji require Nitro for use outside the originating server
• Teams is the most permissive on file size (1 MB) and has native GIPHY integration for chat

For all three platforms, AnimGifMoji can resize and optimize GIFs. Select the target platform in the tool to automatically apply the correct dimensions and compression settings.

Best Practices for Slack GIF Makers

Getting the most out of your Slack GIF maker requires a few good habits:

Choose looping animations. The best custom emoji GIFs are short (1–3 seconds) and loop seamlessly. Long GIFs eat up your file size budget and distract from conversation.

Use transparent backgrounds when possible. GIFs with transparent backgrounds blend into Slack's light and dark themes more naturally. AnimGifMoji preserves transparency when present in the source file.

Keep your emoji library organized. Before uploading a new custom emoji, check if a similar one already exists. Duplicate emoji clutter the picker and make it harder to find the right reaction.

Test in both Slack themes. Slack users can switch between light and dark mode. Make sure your GIF emoji look good in both. Dark text on a transparent background may be invisible in dark mode.

Respect workspace norms. Not every workspace culture is the same. Some teams love animated emoji in every message; others prefer them only for celebrations. Match the energy of your team.

Compress proactively. Even if your GIF appears to be under 128 KB, compress it anyway. Smaller files load faster for every team member and reduce Slack's storage overhead.

> 💡 Tip: If you regularly create custom emoji for your workspace, bookmark AnimGifMoji's Slack emoji maker as your go-to tool. The dedicated page pre-selects Slack settings so you don't have to reconfigure them each time.

Related Articles

If you want to go deeper on specific parts of the Slack GIF workflow, these guides cover each step in detail:

• How to Convert a GIF to a Slack Emoji (Step-by-Step) — Detailed walkthrough of the conversion process including file size troubleshooting
• Slack GIF Emoji Maker: Resize GIFs for Slack Custom Emoji — Focused guide on the emoji-maker tool specifically
• GIF Emojis for Slack: The Complete Guide — Everything about using animated emoji in Slack workspaces
• AnimGifMoji Tenor Search — Search and preview Tenor GIFs to use in Slack

Frequently Asked Questions

What is the best Slack GIF maker?

AnimGifMoji is one of the best free Slack GIF makers because it combines Tenor search, automatic resizing to 128×128 px, and 128 KB compression in a single browser-based workflow. No account or download required. For creating GIFs from scratch (screen recordings, video clips), tools like ScreenToGif or Photoshop work well, but you'll still need AnimGifMoji to resize the output before uploading to Slack.

How do I make a custom GIF emoji for Slack?

To make a custom GIF emoji for Slack: (1) Find or create an animated GIF, (2) Use AnimGifMoji to resize it to 128×128 px and compress it to under 128 KB, (3) Download the optimized file, (4) Go to your Slack workspace settings under Customize then Emoji, (5) Click "Add Custom Emoji" and upload the file with a name. The emoji will then be available to all workspace members.

What size should a GIF be for Slack?

For Slack custom emoji, GIFs must be 128×128 pixels or smaller and under 128 KB in file size. For chat message GIFs (pasted links or file uploads), there is no practical size limit — Slack renders GIF links inline at full quality. AnimGifMoji automatically applies the correct dimensions and compression when you select Slack as the target platform.

Can I send animated GIFs in Slack for free?

Yes. Sending animated GIFs in Slack chat is free on all plans, including the free tier. You can paste GIF URLs, use Slack's built-in GIF search (powered by Tenor), or upload GIF files directly. Uploading custom animated emoji is also free, though free workspaces have a limit of 5 custom emoji total.

How is a Slack GIF maker different from a Slack emoji maker?

A Slack GIF maker is a broader term covering any tool that helps you find, create, or prepare GIF content for use in Slack — including chat GIFs, screen recordings, and animated emoji. A Slack emoji maker is specifically focused on the custom emoji use case: resizing and compressing GIFs to meet Slack's 128×128 px and 128 KB spec for upload to the workspace emoji library. AnimGifMoji functions as both: it can search and prepare GIFs for chat, and it has a dedicated Slack emoji maker tool for custom emoji creation.