Compress Images for the Web on Mac

Who this is for

Web developers, designers and site owners publishing images on the web.

The problem

Source images arrive from cameras, design tools and screenshots at full resolution, often several times larger than any layout will display. Uploading them unchanged makes pages slower and consumes more bandwidth.

How PixPack is used

• Drop the asset folder into PixPack to build the batch.
• Select the Web preset as a starting point.
• Set the output format to WebP, or JPEG for maximum compatibility.
• Set a maximum width and height that matches the largest layout size.
• Lower the quality slider while watching the before-and-after preview.
• Apply the settings to the whole batch and export.

Expected result

You get a folder of web-ready assets at controlled dimensions and quality, with the reported savings ratio for each file. Because everything runs locally, the images never leave your Mac during processing.

Practical considerations

• Serve WebP only if your audience and stack support it; keep JPEG as a fallback otherwise.
• Resize to the largest size the layout will ever render, and account for high-density displays if your design needs them.
• Keep the originals — compression is a one-way operation for the exported copy.

Key facts

• Web preset
• WebP and JPEG output
• Maximum width and height
• Quality slider with preview
• Batch export