Slack Message Generator
Create realistic Slack workspace message screenshots with channels and threads
Slack settings
Messages
- Message 1
- Message 2
- Message 3
No messages yet. Add one below.
Add message
Tips
- Every username gets its own avatar colour and initial; type several names for a group conversation.
- Leave the time empty when adding a message to stamp it with the current time.
- The uploaded picture replaces the letter avatar of the first message’s author on all of their messages.
- Dark mode switches to the Slack dark theme.
Preview
The preview updates as you edit.
About Slack Message Mockup Generator
The Slack Message Mockup Generator is a free online tool for building Slack chat screenshots. Product teams show a workflow in a pitch deck, marketers stage a customer quote, and designers prototype a bot reply; the tool reproduces the Slack DM interface with flat message layouts, colored circle avatars, bold usernames, timestamps, and online-status indicators.
Building a Slack chat mockup has never been easier. Simply type a contact name, add messages from any number of participants, and download a sharp PNG. Line breaks, a colour avatar for every username, the status bar, the date separator and the Slack input bar are drawn for you, saving you hours of manual screenshot editing and Photoshop work.
Your messages are never uploaded or stored. Use the Slack message generator to craft realistic workplace-chat visuals for blog thumbnails, training materials, app-store listings, case studies, or internal communication guides without exposing real conversations or private information.
Key Features
- Authentic Slack DM interface with flat, bubble-free message layout matching the official mobile app
- Colored circle avatars auto-generated from usernames with green online-status indicators
- Customizable contact name displayed in the header and input placeholder
- Editable date separator (e.g., "January 7th") for timeline context between messages
- Dark mode toggle replicating Slack's official dark theme color palette
- Upload a profile picture for the first message’s author to replace the letter avatar
- iOS status bar with signal bars, Wi-Fi icon, and battery indicator
- Accurate header icons including back chevron, push-pin, and headphones
- Multiple participant support with unique colored avatars for each distinct username
- One-click PNG export at twice the 390 pixel phone width, for web and presentation use
How to Use
- Set the contact name: Enter the contact name that appears in the header and input bar (default: "Toolsvana Team").
- Set the date separator: Configure the date separator text to match the conversation timeline (e.g., "January 7th" or "Yesterday").
- Add messages: Type a username, timestamp, and message body, then click Add Message. Repeat for each message in the conversation.
- Upload a profile picture: Optionally upload a custom profile photo for the first sender's avatar to increase authenticity.
- Toggle dark mode: Switch between Slack's light and dark themes to match your target platform or slide background.
- Download the image: Click Download PNG to save a sharp PNG ready for sharing and embedding.
Use Cases
- Product management: Illustrate feature announcements, workflow demos, and team communication examples in slide decks and PRDs.
- UX & UI design: Build realistic Slack interface mockups for case studies, portfolios, and design presentations.
- Marketing & social media: Create engaging social media content that showcases team communication and workplace culture.
- Education & training: Produce workplace-messaging examples for onboarding materials, courses, and digital literacy programs.
- Content creation: Generate thumbnail images and illustrations for blog posts, YouTube videos, and articles about Slack and workplace tools.
- App development: Prototype chat features with a Slack-style reference layout for app design and pitch materials.
- HR & internal comms: Craft internal communication guides and policy examples without exposing real employee conversations.
- Freelance proposals: Demonstrate client communication workflows and project management processes in project proposals.
Frequently Asked Questions
Can I create a fake Slack message for a presentation?
Absolutely. The generator produces realistic Slack DM screenshots perfect for slide decks, design mockups, and marketing assets. Download the PNG and drop it into any presentation tool.
Does the Slack chat mockup support dark mode?
Yes. Toggle the Dark Mode checkbox to switch between Slack's light and dark themes instantly. Both modes are rendered with accurate official color palettes.
Can I add more than two participants?
Yes. Type any username when adding a message -- the tool auto-generates a unique colored avatar for each distinct name, simulating a group DM with multiple participants.
What image resolution does the download produce?
The PNG is drawn at twice a 390 pixel phone width (780 pixels wide) and its height follows the conversation, so short chats and long threads both stay crisp.
Tips & Best Practices
- Use realistic timestamps: Set natural, conversational timestamps (e.g., 15:05, 15:06) to make the chat feel genuine and chronologically consistent.
- Upload real profile photos: Use actual headshot photos as profile pictures for maximum authenticity in professional mockups.
- Vary message lengths: Mix short one-liners with longer paragraphs to mimic real Slack conversations and natural communication patterns.
- Choose dark mode strategically: Use dark mode for screenshots that will appear on dark backgrounds or in low-light presentation slides.
- Set meaningful date separators: Use date text like "Yesterday", "March 12th", or "Today" to add realistic timeline context to your mockup.
- Use distinct usernames: Choose memorable, distinct usernames for each participant so readers can easily follow the conversation flow.