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How to reduce a JPG photo with WEBP and compare compression damage

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For a photo intended for the web, compare the size of a WEBP copy with the original JPG. The converter decodes the existing photo and compresses it again, so a smaller file can also have different fine detail.

Open the tool →
Convert JPG to WEBP
Illustration of this tool’s workflow; it is not a result from an uploaded file.

How to use this tool

  1. Choose files in JPG, JPEG format. Maximum files per batch: 100.
  2. Review Output quality (%), Maximum width (px, 0 = original), Maximum height (px, 0 = original), then start processing.
  3. Download the WEBP result and check its content and quality.

Choose the right settings

Leave maximum dimensions at 0 for an initial comparison at the source size. Compare a quality adjustment separately from a dimension reduction so you can see which change affects the image.

Supported input
  • JPG, JPEG
Output
  • WEBP
Available settings
  • Output quality (%)
  • Maximum width (px, 0 = original)
  • Maximum height (px, 0 = original)

Example input and output

photo.jpg → photo.webp

Examples describe the workflow. Results depend on the source file and settings.

Check the result before you save

Inspect textured areas such as foliage and the boundaries between colors at full size. Test WEBP upload and display in your publishing system before replacing the image used there.

If the result is different from what you expected

WEBP cannot recover detail already lost in JPEG compression. Start each revised conversion from the original JPG rather than repeatedly compressing an output copy, which can accumulate additional visible damage.

Limits to keep in mind

  • Re-encoding may lose detail. Compare the downloaded file size and appearance before replacing your original.

This guide explains the public browser tool. Keep a copy of the original and inspect the result before sharing it.