What ideal size after compression?

    Discover what file size to aim for after compression based on your use: web, email, social media, printing.

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    One of the most common questions in image optimization is: 'What size should I aim for?'. The answer depends on the intended use of your images.

    An image that's too heavy slows down your site, but excessive compression degrades visual quality. Finding the right balance is essential.

    This guide gives you precise recommendations by use type to optimize your images professionally.

    Table of contents

    Recommended sizes by use

    Website - Hero/Banner: 200-400 KB maximum (ideal: 150-250 KB).

    Website - Content photos: 80-150 KB (ideal: 100 KB).

    Website - Thumbnails: 20-50 KB.

    E-commerce - Product photos: 100-200 KB (allowing zoom).

    Blog - Illustration images: 60-120 KB.

    Email - Inline visuals: 50-100 KB (email clients often limit total size).

    Factors influencing optimal size

    Displayed dimensions: a 300x200 pixel image doesn't need to weigh as much as a full-width image.

    Visual complexity: detailed photos require more KB than simple graphics.

    Format used: WebP is 25-35% lighter than JPG at equal quality.

    Target audience: mobile-first requires lighter images.

    Social media - Specific sizes

    Instagram: upload in high quality (>1 MB acceptable as Instagram recompresses).

    Facebook: 100-300 KB for standard posts.

    Twitter: 100-200 KB for good timeline display.

    LinkedIn: 200-400 KB for articles and posts.

    Note: platforms recompress your images. Upload slightly above the desired final quality.

    Email - Special constraints

    Email clients (Gmail, Outlook) may cut off messages that are too heavy.

    Recommended limit: 100 KB per image, 1 MB total for all images in an email.

    Use links to hosted images for heavy visuals.

    JPG format is most compatible with email clients.

    Recommended tools

    Compress images online for free

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    How to do it in 3 steps

    1

    Identify the intended use of your image (web, email, social media, print).

    2

    Refer to the recommended sizes for that use case.

    3

    Compress with our tool aiming for the target size while checking visual quality.

    Common mistakes to avoid

    • ✗Aiming for maximum compression without considering visual quality.
    • ✗Ignoring context: sizes for web aren't the same as for print.
    • ✗Comparing images of different dimensions without accounting for this difference.
    • ✗Forgetting that format strongly influences final size.

    Frequently asked questions

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