Optimize images for HubSpot — compress blog thumbnails, email headers, landing page heroes and social images to the exact sizes HubSpot recommends. Free, browser-based.
All recommended HubSpot image dimensions for 2026. Upload at these exact sizes and compress before uploading to avoid any quality loss from platform-side re-compression.
| Type | Width x Height | Aspect Ratio | Notes |
|---|---|---|---|
| Blog Featured Image | 1200 x 628 px | 300:157 | Blog post header — matches OG image standard for social sharing |
| Email Header | 600 x 200 px | 3:1 | Marketing email banner — optimized for Outlook and Gmail rendering |
| Landing Page Hero | 1920 x 1080 px | 16:9 | Full-width landing page hero — keep under 250 KB for conversion rate |
| Social Sharing Image | 1200 x 628 px | 300:157 | Auto-generated social preview when sharing HubSpot pages |
Open the Compress tool, drop your HubSpot images and set quality to 80%. HubSpot's CMS does not auto-compress uploads — every kilobyte you save before uploading directly improves page performance and email deliverability.
For email images, keep files under 100 KB and use JPEG format. Email clients like Outlook have strict rendering limits. Use the Resize tool to set exact dimensions (600x200 for headers) before compressing with SammaPix.
Download and upload to HubSpot File Manager. For blog posts, use the featured image field at 1200x628 px — HubSpot uses this for both the blog header and auto-generated social sharing previews on Facebook and LinkedIn.
Ready to optimize?
Use Compress to reduce file size without quality loss, or Convert to WebP for an extra 25-35% size reduction.
HubSpot applies basic optimization when serving images through its CDN, but it does not aggressively compress your originals. Large uploads (2+ MB) will still slow down page loads and hurt your HubSpot-hosted site performance. Pre-compressing with SammaPix ensures the smallest possible source files.
Email headers should be 600px wide (the standard email content width) with a max height of 200px. Keep each image under 100 KB. Total email weight should stay under 500 KB for reliable delivery. Use SammaPix to compress before inserting into HubSpot email templates.
Page load speed directly impacts conversion rates — a 1-second delay can reduce conversions by 7%. Hero images are typically the heaviest element on a HubSpot landing page. Compressing your hero to under 250 KB with SammaPix can shave 1-2 seconds off load time.
JPEG for photographs and WebP for modern browsers. HubSpot supports both formats in its CMS. For email, stick to JPEG — WebP support in email clients is still inconsistent. Compress all formats with SammaPix before uploading for the best results.
Three steps: (1) compress images to under 150 KB with SammaPix, (2) use descriptive filenames like 'hubspot-email-marketing-guide.jpg' — use SammaPix AI Rename for this, (3) always fill in the alt text field in the HubSpot editor. This combination improves both page speed and image search visibility.
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