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Image compression best practices - Knowledgebase / Content population - Appeal Digital Support

Image compression best practices

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Proper image formatting and compression are essential for maintaining website performance, improving SEO and ensuring a positive user experience.

Follow the guidelines below to ensure your images are web-ready.

Choosing the right file type is crucial for optimising image quality and performance. Use the following recommendations:

  • JPEG (.jpg/.jpeg) – Ideal for photographs and complex images with many colours.

  • PNG (.png) – Suitable for images that require a transparent background (e.g., logos or graphics).

  • SVG (.svg) – Best for vector-based icons and logos that need to scale without losing quality.

Note: PNG files tend to be larger than JPEGs, so use them only when necessary.


Question

What about WebP? WebP is a great format for reducing file sizes while maintaining quality; however, instead of exporting images in WebP format manually, we recommend uploading them in standard formats (JPEG, PNG, SVG), as our website automatically converts images to WebP using Cloudflare or a third-party service to optimise performance.


Video tutorial for Photoshop and uploading to WordPress


Image Compression Best Practices

To maintain a balance between image quality and page speed, follow these best practices:

  1. Keep file sizes small: Aim for images under 200KB, where possible.

  2. Resize images appropriately: Upload images at the exact dimensions needed on the site to avoid unnecessary scaling.

  3. Optimise images before uploading: Use tools such as TinyPNG


Image Size Recommendations

Use the following guidelines for resizing images:

  • Full-width images: Max width of 2299px, optimised for desktop screens.

  • Standard content images: Between 800px – 1200px, depending on layout.

  • Thumbnail images: Around 150px – 300px, suitable for preview purposes.


Troubleshooting Common Issues

  • Image appears blurry: Ensure the uploaded image meets the required resolution and dimensions.

  • Slow page load times: Check that images are compressed adequately without sacrificing quality.

  • Wrong file type error: Convert images to the correct format before uploading.


Struggling with something? If you have any further questions, please contact our a member of the team.

 

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