Resize Images for Your Website (Free)
A 6000px-wide camera photo weighs 5-12MB. Websites should serve images between 800-2400px wide for fast loading and sharp display on any screen. Resizing your images before upload is the single most impactful thing you can do for page speed and Core Web Vitals.
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Open Resize Image for WebsiteWhy website images need to be resized
Browsers download every pixel you send. A visitor on a 400px phone screen still downloads your 6000px original — wasting bandwidth, slowing the page and hurting SEO. Resizing to the maximum display width eliminates this waste.
Recommended widths for common uses
- Blog body images: 800-1200px
- Hero / banner images: 1600-2400px
- Thumbnail: 300-400px
- Product photo: 1200-1600px
- Social sharing (OG): 1200×630
Match the resize width to the largest size it will display at — never larger.
Resize then compress for best results
Resize first to the target width, then compress to a target file size (200KB for thumbnails, 300-500KB for content images, under 1MB for hero). This two-step approach gives the smallest file with the best quality.
Tools we recommend
Frequently Asked Questions
Does resizing reduce quality?
Downscaling never degrades quality — it simply removes pixels the browser would never display. The result looks identical or better than the original.
What width should I use for blog images?
1200px wide covers full-width content on desktop while staying light on mobile. For inline images, 800px is ideal.
Should I resize before or after compressing?
Always resize first. Compressing a 6000px image to 200KB requires extreme quality loss; resizing to 1200px first makes 200KB effortless.