html2canvas fix : error attempting to parse unsupported color

Problem

if you're using html2canvas to capture screenshots, you might encounter this error:

error: attempting to parse an unsupported color function "color"

this happens when your webpage uses modern css color functions like:

• color(display-p3 1 0.5 0)

• lab(50% 20 -30)

• lch(70% 45 180)

• oklab(0.7 0.1 0.1)

• oklch(0.8 0.15 180)

the original html2canvas library doesn't support these newer color formats, causing it to fail when processing pages that use them.

solution : html2canvas-pro

html2canvas-pro is an improved version of the original library that fixes this issue. it's a community-maintained fork that supports all modern CSS color functions while maintaining the exact same API.

package link

benefits :

enhanced color support:

• supports all css color level 4 and 5 functions

• handles wide gamut color spaces (display-p3, rec2020)

• works with relative color syntax

additional improvements:

• better object-fit support for images

• various bug fixes

• same performance as the original

zero breaking changes:

• identical api to html2canvas

• same browser compatibility

• drop-in replacement

installation

install html2canvas-pro using your preferred package manager:

npm

npm install html2canvas-pro

yarn

yarn add html2canvas-pro

pnpm

pnpm add html2canvas-pro

how to use

simply replace your import statement:

import html2canvas from 'html2canvas-pro';

everything else stays the same:

html2canvas(document.body).then(function(canvas) {
    document.body.appendChild(canvas);
});

for more complex usage:

html2canvas(targetElement, {
    allowTaint: true,
    backgroundColor: null,
    logging: false,
    scale: window.devicePixelRatio,
    useCORS: false
}).then(function(canvas) {
    const dataURL = canvas.toDataURL('image/png');
    // Handle your screenshot
});

migration notes

performance impact: minimal overhead (less than 10% increase in parsing time)
bundle size: approximately 15KB additional compressed size
browser support: same as original html2canvas

troubleshooting

if you're still experiencing issues after migration:

1. enable logging to debug color parsing:

    html2canvas(element, { logging: true })
   

2. check for other css features that might cause problems

3. verify all dependencies are updated

before

after

conclusion

html2canvas-pro provides a straightforward solution to CSS color function parsing errors. the migration requires only changing your import statement while gaining support for modern color features and various bug fixes. for applications already experiencing these errors, switching to html2canvas-pro resolves the issue immediately without any code changes.