I built the image compression for imgfiber using CompressorJS as the base. It’s ...

bertman · 2025-04-06T12:02:18 1743940938

Using CompressorJS means lossy image compression. You really shouldn't be calling this "Instant, Lossless File Compression" on your page.

Also, because you're using CompressorJS's default settings, you should know that PNG files > 5 MB are converted to JPG (https://github.com/fengyuanchen/compressorjs?tab=readme-ov-f...). Your site, however, keeps the .png file name ending for the converted image, again falsely suggesting lossless compression.

mootothemax · 2025-04-06T12:55:05 1743944105

> I wrapped and modified it to meet our specific needs, tweaking the code so the results differ from the default - you won’t get the same file size or optimization when using it out of the box.

I presume this is an oversight; changing CompressorJS's quality setting from its default of 0.8 to 0.75 results in the exact same output as ImgFiber.

Full settings dump:

  {
    "strict": true,
    "checkOrientation": true,
    "retainExif": false,
    "maxWidth": null,
    "maxHeight": null,
    "minWidth": 0,
    "minHeight": 0,
    "resize": "none",
    "quality": 0.75,
    "mimeType": "auto",
    "convertTypes": [
        "image/png"
    ],
    "convertSize": 5000000,
    "beforeDraw": null,
    "drew": null
}

iambavith · 2025-04-07T03:03:18 1743994998

the settings dump you dropped will not deliver on same outputs :)