How to Dictate Into Substack on a Mac
Substack is where the essay lives, but essays are slow to type. If you think out loud better than you type, you can speak your whole newsletter straight into the Substack editor on your Mac and let AI tidy it into clean prose. Here is exactly how to set it up.
Key takeaways
- The Substack editor is a normal text field, so any system-wide dictation tool can type into it.
- On-device dictation keeps your unpublished draft on your Mac instead of a server.
- AI cleanup turns rambling speech into punctuated, readable paragraphs automatically.
- A custom dictionary teaches the app your names, brands and jargon so it spells them right.
Why dictate your Substack posts?
Writing a newsletter by voice is not a gimmick. It changes how the draft comes out. When you speak, you write closer to how you talk, which is exactly the conversational tone most Substack readers subscribe for. Speed helps too: most people speak around three to four times faster than they type, so a first draft that would take an hour at the keyboard can spill out in twenty minutes of talking.
Dictation is also friendlier to the messy front end of writing. If you tend to draft by talking through an idea, our guide to voice brain dumps on a Mac pairs well with this workflow: brain-dump out loud first, then shape the transcript into a post. Voice input has come a long way, and modern speech recognition on-device is accurate enough for real long-form work. If you want the background on the underlying technology, the general concept is well documented on Wikipedia's speech recognition page.
What you need before you start
The Substack composer runs in your browser or in the Substack Mac app, and both are ordinary text fields. That means the only thing standing between your voice and a published post is a dictation tool that can type wherever your cursor sits. You have two broad options.
The first is Apple's built-in Dictation, which you enable in System Settings. It is free and covers basic capture. You can follow Apple's own Dictation setup guide to switch it on. The second is a dedicated voice-to-text app like BlaBlaType, which runs speech recognition locally on Apple Silicon, works system-wide in any app, and adds an on-device AI cleanup pass so the words that land in your draft are already polished.
How to dictate into Substack, step by step
Install and grant permissions
Download BlaBlaType for macOS and grant microphone and accessibility permissions when prompted. Accessibility is what lets the app type into other apps, including Substack.
Open your Substack draft
In the Substack composer, start a new post and click into the body area. Your text cursor should be blinking where you want the first sentence to appear.
Press your dictation shortcut
Hit the single keyboard shortcut to start recording. A small overlay confirms the app is listening. There is nothing to click inside Substack itself.
Speak your draft naturally
Talk the way you would explain the idea to a friend. Do not worry about ums, false starts or missing commas. The on-device AI cleanup handles that for you.
Review, then publish
The cleaned text appears in your draft. Read it once, tweak the headline and structure, and hit publish. The whole process never leaves your Mac.
What happens to your words behind the scenes
The reason the output reads like writing and not a raw transcript is the pipeline the audio moves through. Your voice is captured, transcribed by a local model, rewritten by an on-device AI cleanup pass, and then typed into Substack. Every stage runs on your Mac, so an unpublished essay never touches a third-party server.
A few features make the difference for newsletter writing specifically. A custom dictionary teaches the app how to spell your name, your publication and any recurring jargon, so a niche essay does not come out riddled with misspellings. Custom AI prompts let you set a house style, for example always using short paragraphs or a specific voice. And because the same setup works anywhere, you can reuse it beyond Substack: the exact workflow applies when you dictate emails on your Mac or draft replies in any other app.
On-device dictation options at a glance
| Approach | Types into Substack | On-device | AI cleanup |
|---|---|---|---|
| BlaBlaType | Yes | Yes | Yes |
| Apple Dictation | Yes | Mixed | No |
| Cloud dictation apps | Yes | No | Yes |
| File transcription tools | Files only | Often | No |
The trade-off is clear. If you only need to capture words, Apple Dictation is a fine starting point. If you want the draft to arrive already cleaned up and to keep your unpublished writing private, an on-device app with AI cleanup is the better fit. For a wider comparison, see our roundup of the best dictation software for Mac in 2026.
Speak your next Substack post
Dictate straight into any editor, get AI-cleaned text, and keep every word on your Mac. No card needed for the trial.
Download for macOSFrequently asked questions
Can you dictate directly into the Substack editor on a Mac?
Yes. The Substack editor is a normal web text field, so any Mac dictation tool that types where your cursor is can write straight into a draft. Place your cursor in the post body, start dictation, and your words appear as you speak.
Does dictating into Substack send my draft to the cloud?
It depends on the tool. Cloud dictation services upload your audio to their servers. On-device tools like BlaBlaType transcribe everything locally on your Mac, so your voice and your unpublished draft never leave the machine.
How do I clean up filler words when I dictate a Substack post?
Use a dictation app with AI cleanup. BlaBlaType runs on-device AI that removes filler words like um and you know, fixes punctuation and grammar, and can adapt tone, so your spoken draft reads like written prose.
Is dictation faster than typing a newsletter?
For most people, yes. Most people speak around three to four times faster than they type, so dictating a first draft of a Substack post is often quicker than typing it, especially for long-form essays.
Can I dictate a Substack post in another language?
Yes. BlaBlaType supports 90+ languages and can optionally translate as you speak, so you can draft a newsletter in your own language or dictate in one language and produce text in another.