html2canvas bottom margin

I coded this in react

function download(element) {
        html2canvas(element).then((canvas) => {
            window.open(canvas.toDataURL('image/png'));
        });
    }

    return (
        <div className='box' onClick={(e) => download(e.target)}>
        <h2>
        <img src={logo} alt='logo' draggable='none' />
        {title}
        </h2>
        <p>{text}</p>
        </div>
    );
    

and some css styling

@import url('https://fonts.googleapis.com/css?family=Montserrat:300,400,500|Roboto:300,400,500&display=swap');

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    #root {
        display: flex;
        flex-direction: column;
        gap: 2em;
        padding-top: 2em;
        padding-bottom: 2em;
    }

    .boxContainer {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2em;
    }

    .box {
        background-color: #212120;
        width: 600px;
        padding: 0.9em;
        cursor: pointer;
    }

    .box h2,
    .box p {
        --color: rgb(218, 218, 218);
        font-size: 1.5em;
        font-weight: 400;
        color: var(--color);
    }
    ...
    

The purpose of my code is to capture a screenshot of an element. The functionality works well, however, there is a small white space (around 2px high) at the bottom of the screenshot. Any suggestions on how to remove it? Thank you :)

Image

Answer №1

This particular spacing originates from the h2 element. It is necessary for certain letters such as "g" or "y". To eliminate it, you can utilize line-height: 0.

Oftentimes, the issue of a "2px bottom problem" stems from the img element. By default, it has a display: inline property. You may rectify this by changing it to display: block and removing it from within the h2 tag.

Answer №2

const downloadImage = (element) => {
    html2canvas(element, {
        height: element.offsetHeight - 1,
    }).then((canvas) => {
        window.open(canvas.toDataURL('image/png'));
    });
}

Note: I resolved the issue by adjusting the height manually.

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