Substack Can't Publish or Editor Page Unresponsive

How to fix it

Try these in order — the most common fix is first.

1. 1. Test in a private window

   Copy steps
   1. Open the dashboard in a private window with extensions off
   2. Copy your draft text there and try publishing
   Did this fix it? Yes No

2. 2. Reduce draft weight

   Copy steps
   1. Split a very long post into parts
   2. Compress images before uploading and remove heavy embeds
   Did this fix it? Yes No

3. 3. Refresh your session

   Copy steps
   1. Sign out and back in
   2. Clear cookies for substack.com
   Did this fix it? Yes No

4. 4. Check status and contact support

   Copy steps
   1. Check Substack's status page for incidents
   2. Contact support with the draft URL and browser version
   Did this fix it? Yes No

Symptoms

Publish or Schedule fails, the editor shows Page Unresponsive, or a draft does not save.

Why it happens

• Very long posts with many images or embeds
• Browser extensions interfering with the editor
• Stale session or blocked cookies
• Temporary Substack outage

This guide also covers

• substack can't publish
• substack editor page unresponsive
• substack network error publish

Other Substack errors

• Substack Emails Going to Spam or Promotions
• Not Receiving Substack Emails
• Substack Login Link Not Arriving or Not Working
• Substack Paywall Showing for Paid Subscribers
• Substack Payment Declined When Subscribing
• Substack Stripe Payout Not Arriving
• Substack Custom Domain Not Working
• Substack App Crashing or Not Loading