Image Compression

Image compression supports the following formats: 'png', 'jpg', 'jpeg', 'webp', 'gif', 'tiff', 'tif', 'avif', 'heif', 'svg'.

svg compression uses svgo, while other formats use sharp.

Compression Options

Non-SVG

• Image Quality: 0-100, 0 is the lowest quality, 100 is the highest quality. Default is 75.
• Image Size: Scale image size proportionally, default is 100%.
• Image Format: Convert image format if possible, default is original format.
• Skip Compressed Images: Whether to skip already compressed images, default is true.
• Keep Original File: Whether to keep the original file, default is false.

SVG

• Skip Compressed Images: Whether to skip already compressed images, default is true.
• Keep Original File: Whether to keep the original file, default is false.

Click the svgo config button to configure svgo compression options. Refer to the svgo documentation for more details.

View Compression Results

After compression, a popup will display the compression results as shown above.

Undo Compression

If you are not satisfied with the compression results, click the Undo button to restore the original image.

Error Range

If the image size increases beyond the error range, it is considered an increase; otherwise, it is considered a successful compression.

To save the compression status, the extension adds data to the image metadata, which may cause slight discrepancies.

Check Compression Status

You can check if an image is compressed in the following ways:

1. A ✔ icon is displayed at the bottom right of the image.
2. Displayed in the image details.
3. Displayed when hovering over the image.

Some images cannot have metadata written, so their compression status cannot be determined.