why does text look different when i edit a png image?

Text can look different when editing a PNG due to several factors, including subpixel rendering and the availability of system fonts. When you modify text in an image, the rendering might not replicate the original due to differences in how text is displayed on different devices and applications.

Subpixel rendering is a technique that uses the individual pixels of an LCD screen to increase the apparent resolution of the text. However, this means that any change or movement of the text can lead to differences in appearance, especially when viewed at different resolutions or zoom levels. Additionally, if your editing tool uses a different font library than the one used to create the original text, discrepancies can occur. For instance, Adobe Fonts and Google Fonts have different sets of available fonts, which can lead to unexpected outcomes when the exact match isn't available.

Using tools like EditTextImage, which are specifically designed to match the original font closely, can mitigate these differences. It analyzes the image and selects the closest possible match in terms of weight, size, and style, ensuring a more seamless integration. To maintain color accuracy and text fidelity, it's important to save the edited image in a format that supports alpha channel preservation, such as PNG.