Resize Image for Email – 600px Template Width & Attachment Size
Drop your images here
Select one image to resize, or multiple for batch ZIP download
Email images need to be the right pixel width for inline display and a reasonable file size for attachments. This free tool resizes any image to the standard 600px email template width or any other dimension, and reduces file size to under 500 KB, so your emails load fast and don't get rejected.
HTML email templates are typically 600 pixels wide. Embedding a 4000px-wide image forces the email client to scale it down, but the full-size image is still downloaded, causing slow load times for recipients. Resizing the image to 600px before embedding it keeps your email snappy.
For attachments, keeping images under 1 MB prevents Gmail's 25 MB limit from being hit on multi-image emails. This tool handles both use cases in one step.
How to use it
Three steps, under 30 seconds from upload to download.
- 1
Upload your image
Drop any JPG, PNG, or WebP. The file is processed in your browser.
- 2
Set width to 600px (or your template width)
Enter 600 for the width and leave height empty to scale proportionally. For attachments, set a lower quality to reduce file size further.
- 3
Download the email-ready image
Download and embed in your email template or attach to your email.
Common use cases
Real-world scenarios where this tool is the fastest solution.
Email newsletters
Resize header images and content images to 600px wide for standard email template widths.
Customer support
Resize screenshots to a manageable size before attaching to support ticket replies.
Sales outreach
Include product photos in outreach emails at a size that loads instantly without hitting attachment limits.
What makes this different
Standard 600px email width
Matches the industry-standard HTML email template width used by Mailchimp, Klaviyo, and Campaign Monitor.
Proportional scaling
Enter width only, height scales automatically to preserve the image ratio.
Fast load for recipients
A 600px image is typically under 100 KB, compared to 3–8 MB for a full-resolution photo.
Questions & answers
Everything you might need to know before using the tool.
What width should email images be?+
What file size should email images be?+
Should I use JPG or PNG for email images?+
Your files are private
All processing runs locally in your browser using JavaScript. Your files are never transmitted to any server, stored, or shared. Close the tab and they're gone.
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