why does the font change when i copy text from an image to a document?

The font changes when you copy text from an image to a document due to the CSS font-family fallback chain, which substitutes similar fonts available on your device when the original isn't accessible.

When you extract text using OCR (Optical Character Recognition), the software identifies character patterns but doesn't retain the original font. As a result, when you paste this text into a document, the system default font is applied, unless that specific font is available.

This occurs because not all fonts used in images are installed on your system or supported by your document editor. Tools like Canva and Photopea can display a wide range of fonts online, but when text is transferred offline, the system's default settings take over to maintain readability.

To maintain the original font appearance, you can manually select a font in your document editor that closely resembles the one in the image. Alternatively, using EditTextImage can preserve the font style directly when rendering new text in an image, ensuring it matches the original conditions without manual adjustments.

Be cautious when editing text intended for formal documents, as font changes can affect the overall design integrity of your document or presentation.