Substack is the leading newsletter and blog platform for independent writers. Substack's editor handles paste well for simple content but can struggle with complex formatting from Google Docs. Clean HTML from Publish Helper ensures your newsletter content is perfectly formatted.
Substack's editor converts paste into its own format but may preserve unwanted inline styles from Google Docs, especially font-family and font-size declarations that override Substack's newsletter typography. Email delivery adds another layer — bloated HTML can trigger spam filters or render poorly in email clients.
Copy your content from Google Docs, Word, or any editor
Paste into Publish Helper and click 'Clean HTML'
Copy the clean HTML from Publish Helper
Paste directly into Substack's editor
Preview your post and send a test email to verify formatting
Email clients render HTML differently from web browsers. Inline styles from Google Docs can cause inconsistencies between Substack's web view and the email version. Clean HTML renders more consistently across both.
Bloated HTML can increase email size and trigger spam filters. Clean HTML from Publish Helper reduces email weight, which helps with deliverability and load times in email clients.
Substack has its own typography that you should lean into. Instead of trying to preserve Google Docs formatting, clean it with Publish Helper and let Substack's styles handle the presentation.
Last updated: March 2026