How to Convert JPG to WebP on Mac

What you need

• macOS 14.0 or later
• PixPack – Image Compressor Pro from the Mac App Store
• JPEG source files

Step by step

1. Add the JPEG files

   Add the JPEGs with Add Files, or drag the folder that contains them.

2. Set the output format to WebP

   Choose WebP from the format options.

3. Pick a quality level

   Start from the Web preset or use Smart Recommend Quality, then fine-tune with the slider.

4. Resize if appropriate

   Photographs are often captured far larger than they are displayed. A maximum width and height with the aspect ratio locked reduces file size substantially.

5. Preview

   Use slider comparison to check that the WebP output looks acceptable next to the original JPEG.

6. Export

   Apply the settings to the batch and export the WebP files.

Converting an already compressed JPEG

JPEG is lossy, so the source has already discarded detail. Re-encoding it to WebP adds a second generation of loss. Keep the original JPEG if it is the highest-quality copy you have.

Will the WebP be smaller than the JPEG?

Often, but not always. WebP generally has an advantage at similar visual quality, yet the outcome depends on the image content and the quality level you pick. PixPack reports the actual saving before you export.

JPEG versus WebP compatibility

• JPEG opens in essentially every application and platform
• WebP is supported by modern browsers but not by all desktop software
• Keep JPEG as a fallback if your audience or tooling requires it

Expected result

WebP versions of your JPEG images at your chosen quality and dimensions, with the size difference reported for each file.

Tips

• Do not delete the original JPEGs — they are your highest-quality source.
• For photography portfolios, check the preview closely at low quality settings.
• Combine the conversion with a maximum width to get the largest total saving.