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How to Make a Slack Chat Overlay for Videos & Streams

Easily add a realistic animated Slack chat overlay to your gameplay, vlogs, or streams. Vidulk's free browser-based tool exports authentic Slack-style chat animations as MP4 or PNG for use in OBS, CapCut, Premiere, and more.

Start from a template

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Fake Chat Video Generator

Build a realistic conversation, then download it as a video (with typing + sounds) or a screenshot. Free, in your browser — nothing is uploaded.

Platform
Messages
Script import & bulk exportpaste a script instead of typing

Reading a script into the editor is free. Downloading up to 10 videos at once needs a PREMIUM code.

1. Get scripts from ChatGPT, Claude or any AI

Say what the videos are about. Copy the prompt, paste it into your AI, then paste its answer below.

Or open it in ChatGPT or Claude.

2. Paste the scripts

Writing them yourself? See the format
  • Start each video with a line like === 1 ===.
  • One label: text per line. title: names the file.
  • Use me: for messages I send and them: for messages from the other person.
  • Put contact: (the other person's name) near the top of each script.
  • You may add platform: with one of: imessage, whatsapp, instagram, tiktok, messenger, telegram, android-sms, discord, twitch, snapchat, signal, line, tinder, bumble, onlyfans, slack, teams.
  • You may add dark mode: yes or no, and time: such as Today 2:02 PM.
  • Write 6 to 14 short messages per script, the way people really text.
9:41
A

Alex

Active

Today 2:02 PM

A

Alex

You up? I have to tell you something 😳

Y

You

It's 2am… this better be good

A

Alex

You will NOT believe what just happened

vidulk.com

Message #friend

Video background

PREMIUM

Put your video on a moving background, the format story channels use.

Free to preview. Downloading with a background needs a . The free download saves your video without it.

Gameplay, b-roll, anything you have the rights to. It stays on your device.

Get a premium code

  • No watermark on videos and screenshots
  • Video backgrounds, including your own footage
  • Bulk export: up to 10 videos at once
  • Works on every Vidulk tool, on the site and in the Chrome extension

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How it works

  1. Pick a premium code and pay with Stripe. No account or login needed.
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Made by Vidulk — the AI app that turns long videos into viral clips.
How to Make a Slack Chat Overlay for Videos & Streams

1. Generate Your Slack Chat Animation

Use the embedded Slack fake chat generator on this page to create your custom conversation. Set workspace and channel headers, add messages (with avatars, names, timestamps, threads, emoji reactions), and pick light or dark theme. This tool is designed for entertainment, skits, memes, and mockups - never for impersonation or deception.

  • No app or signup required - everything runs in your browser.
  • Preview your chat as you build it to match the classic Slack look.

2. Export for Overlay Use

Once your conversation is ready, export it as an animated video (MP4 or WebM). The animation includes Slack’s signature background, message flow, and reactions. Alternatively, export a static PNG screenshot for a cut-out overlay style.

  • Animated video: Ideal for dynamic overlays in streams and edited videos.
  • Screenshot: Perfect for quick, static overlays or cut-out effects.

3. Add the Overlay to Your Video or Stream

Import the exported MP4/WebM into your editing or streaming software:

  • OBS: Add as a Media Source, position and scale it as a picture-in-picture inset.
  • CapCut/Premiere/DaVinci Resolve: Place the video on a new track, resize, move to a corner, and round corners or add a phone frame for style.

Time the appearance of messages to sync with your voice-over or reactions for maximum impact.

4. Tips for Realistic & Ethical Use

  • Label overlays as staged or for entertainment if they could be mistaken for real conversations.
  • Use overlays for office skits, 'reply-all' chaos, or remote-work humor.
  • For a masked/cut-out look, use the PNG export and mask it in your editor.

Vidulk's Slack chat overlay is free with a small watermark (removable with a one-time code).

Make it now - the free generator is on this page, preset to this platform. Export as video or screenshot.

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FAQ

Can I use the Slack chat overlay in OBS for live streams?

Yes, export the Slack chat animation as MP4/WebM and add it as a media source in OBS. Resize and position it as needed for your stream.

Is the Slack chat overlay transparent?

The exported video has Slack’s solid background, not a transparent alpha channel. For a cut-out look, use the PNG screenshot and mask it in your editor.

Do I need to install an app or sign up?

No, Vidulk’s Slack chat generator is fully browser-based with no app or signup required. Export your overlay directly from the page.

Can I remove the watermark?

Yes, overlays are free with a small watermark. You can remove it permanently with a one-time code.

What can I use Slack chat overlays for?

They’re great for office/remote-work skits, boss and HR message gags, reply-all chaos, and adding staged group chat reactions to videos or streams.