Why Voice Typing for Slack Makes Sense
Slack is where modern work happens. The average knowledge worker sends dozens of Slack messages every day, participates in multiple threads, and writes responses that range from a quick "sounds good" to multi-paragraph explanations. All of that typing adds up.
According to workplace productivity studies, the average professional spends over 90 minutes per day on messaging platforms like Slack. Much of that time is spent typing, editing, and retyping messages. Voice typing can cut that time dramatically by letting you speak your messages instead of typing them.
But Slack doesn't have built-in voice-to-text for composing messages. While you can record audio clips (Huddles and voice messages), there's no native way to dictate a text message using your voice. That's where third-party speech-to-text tools come in.
In this guide, we'll cover every method for using speech-to-text with Slack on Mac, including step-by-step setup instructions and tips for making voice typing a natural part of your Slack workflow.
What This Guide Covers
- Why Slack lacks native voice-to-text for messages
- How to use macOS dictation with Slack
- Setting up Scrybapp for seamless Slack dictation
- Voice typing in Slack threads, channels, and DMs
- Tips for composing clear, professional messages by voice
- How voice typing compares to Slack audio messages
The Problem: Slack Has No Built-In Dictation
Slack offers audio messages and Huddles for voice communication, but these features serve a different purpose. An audio message sends a recording that the recipient has to listen to. It doesn't create searchable, scannable text. Huddles are live conversations, not a way to compose written messages.
What many Slack users actually want is the ability to speak a message and have it appear as regular text in the message box. This way, the message looks and behaves exactly like a typed message — it's searchable, quotable, and doesn't require the recipient to put on headphones or find a quiet spot to listen.
Since Slack doesn't provide this natively, you need an external speech-to-text tool that works with Slack's message composer.
Method 1: macOS Built-In Dictation in Slack
The simplest way to start voice typing in Slack is with your Mac's built-in dictation feature. It's free and works in both the Slack desktop app and Slack in a web browser.
How to Set It Up
Open System Settings on your Mac, go to Keyboard, and enable Dictation. Choose your language and preferred activation shortcut (usually double-pressing the Fn key). Once enabled, click into any Slack message field, activate dictation, and start speaking.
What Works
For short messages, macOS dictation is acceptable. It picks up common words and phrases reasonably well, and it's fast enough for quick replies like "I'll take a look at that" or "Let's sync up after lunch."
What Doesn't Work
Longer or more complex Slack messages expose the weaknesses of built-in dictation:
- Technical vocabulary — Slack conversations often involve project names, tool names, programming terms, and industry jargon. macOS dictation frequently gets these wrong.
- Names and handles — Dictating someone's name or a channel name can produce unexpected results.
- Punctuation — You have to manually say "period," "comma," and "question mark," which breaks your natural speaking flow.
- Message length — Dictation can cut off or lose accuracy during longer messages, forcing you to dictate in chunks.
If you only send short, simple messages in Slack, built-in dictation might be enough. But for anything more substantial, you'll want a better tool.
Method 2: Scrybapp — The Best Speech-to-Text for Slack
Scrybapp is a macOS speech-to-text application built for exactly this kind of use case. It works in any app where you can type, which means it works perfectly in Slack's message composer, whether you use the desktop app or web version.
Why Scrybapp Excels for Slack
Scrybapp uses OpenAI's Whisper AI running locally on your Mac. This gives it several advantages that matter specifically for Slack usage:
- Contextual accuracy — Whisper understands context, so technical terms, proper nouns, and industry jargon are transcribed correctly far more often than with basic dictation.
- Natural punctuation — Scrybapp automatically adds periods, commas, and question marks based on your speech patterns. No need to say "period" after every sentence.
- Privacy — Everything is processed on your Mac. Sensitive Slack conversations about projects, clients, or internal matters never leave your device.
- Speed — Transcription happens in real time. Your words appear in the Slack message box as you speak.
- Reliability — Unlike macOS dictation, Scrybapp doesn't randomly stop or lose connection. It works consistently for messages of any length.
Setting Up Scrybapp for Slack
The setup is straightforward and takes about a minute:
- Step 1: Download Scrybapp from the official website.
- Step 2: Install and open it. Grant microphone and accessibility permissions when prompted.
- Step 3: Note the keyboard shortcut for activating dictation (you can customize this in Scrybapp's settings).
- Step 4: Open Slack, click into any message field, press the Scrybapp shortcut, and start speaking.
- Step 5: When you're done, press the shortcut again. Your transcribed message appears in the Slack message field, ready to send.
You can review and edit the message before hitting Enter, just as you would with any typed message. This gives you full control over what gets sent.
Voice Typing in Different Slack Contexts
Slack has several different places where you compose text, and voice typing works in all of them. Here's how to approach each one:
Channel Messages
When posting in a channel, click into the message box at the bottom of the channel, activate voice typing, and speak your message. This is the most common use case and works seamlessly. One tip: for longer channel messages, consider dictating in your text editor first, then pasting into Slack. This lets you review and format before posting.
Thread Replies
Slack threads are where deep conversations happen, and they often require more thoughtful, detailed responses. Voice typing is particularly valuable here because thread replies tend to be longer than regular channel messages. Click into the thread reply box, activate voice typing, and speak your response.
Direct Messages
DMs are usually more conversational and informal, which makes them perfect for voice typing. You can dictate quickly and naturally without worrying about perfect formatting. The speed advantage of voice typing is especially noticeable in rapid DM conversations.
Slack Connect and External Messages
When messaging people from external organizations via Slack Connect, professionalism matters more. Voice typing lets you compose longer, more polished messages quickly. Dictate your message, review it for tone and clarity, then send.
Tips for Effective Voice Typing in Slack
Voice typing in a messaging context is slightly different from voice typing in a document editor. Here are tips specifically for Slack:
Keep Messages Concise
One of the risks of voice typing is over-explaining. When typing, the friction of hitting keys naturally encourages brevity. When speaking, it's easy to ramble. Be conscious of message length and aim for the same conciseness you'd use when typing.
Review Before Sending
This is critical in Slack because messages are often seen immediately by your team. After dictating, take a second to read your message before pressing Enter. Look for any misheard words, especially names and technical terms. A quick review prevents embarrassing corrections later.
Use Voice for Drafting, Keyboard for Formatting
If your Slack message needs formatting (bold text, bullet points, code blocks), dictate the content first, then use the keyboard to add Slack markdown formatting. Trying to dictate formatting commands rarely works well.
Choose Voice Typing vs. Audio Messages Wisely
Slack offers audio messages for a reason — sometimes hearing someone's tone matters. Use audio messages when emotion, nuance, or quick back-and-forth warrants it. Use voice typing (which produces text) when you want a searchable, scannable, professional text message that you compose by speaking.
Voice Typing vs. Slack Audio Messages: Key Differences
It's worth understanding when to use each approach:
- Voice typing (Scrybapp) — Produces regular text messages. Searchable in Slack. Recipients can read instantly. Works in threads. Professional appearance.
- Audio messages — Sends a voice recording. Not searchable as text. Recipients must listen. Conveys tone and emotion. Casual.
- Huddles — Live voice conversation. Real-time. Not asynchronous. Best for discussions that would otherwise be meetings.
For most professional Slack communication, voice-typed text messages are the ideal middle ground: the speed of speaking with the professionalism and searchability of text.
Comparing Speech-to-Text Options for Slack
Here's how the main options compare specifically for Slack usage:
- macOS Dictation — Free. Basic accuracy. Struggles with Slack's fast-paced, jargon-heavy conversations.
- Scrybapp — Best for Slack. Excellent accuracy with technical terms. Fully private. One-time purchase with free trial.
- Wispr Flow — Good accuracy but processes voice in the cloud, which may concern teams discussing sensitive topics. Full comparison here.
- SuperWhisper — Local processing, decent accuracy. More complex setup. Full comparison here.
Start Voice Typing in Slack Today
If you spend significant time composing Slack messages every day, voice typing is one of the highest-impact productivity improvements you can make. It's faster, reduces typing strain, and lets you communicate more naturally.
Download Scrybapp and try it free with 3 minutes of complimentary transcription. No sign-up, no cloud processing, no subscription. Just open Slack, press the shortcut, and start speaking your messages.
For more on how Scrybapp integrates with your favorite tools, visit our Slack integration page or browse all supported integrations.