Use any contemporary browser to visit https://transfonic.com.

Find the 'Image Catalysts' section on the homepage.

Click to expand it and select 'Image Compressor'.

The compressor tool will load on its own.

This tool does not require a sign-in.

You can compress multiple images at once for convenience.

Click the upload box or drag one or more images into the area.

JPG, PNG, and WebP are among the supported formats.

It may take a few seconds to process larger images.

Wait for the images to preview before proceeding.

Use the slider or options to select the compression strength if it is available.

Higher compression reduces file size but may lower quality.

Use a moderate setting for web use and speed balance.

Select lower compression for high-quality image needs.

If you're not sure, leave default settings—they're optimized.

To start lowering file sizes, click the 'Compress' button.

The system will automatically optimize your images.

On average, compression takes only a few seconds per image.

A progress indicator may appear during processing.

Avoid refreshing the page until the compression process is finished.

Download all or each image in a zip file after compression.

Click the download button next to each image or 'Download All'.

Verify the visual quality and file sizes before using the images.

Images that are compressed are perfect for use in apps, emails, and the web.

Try changing settings and reprocessing if quality isn't right.