is there a way to distinguish the regular font and pseudo bold in pymupdf

[zhangxiaojiawow]

Is your feature request related to a problem? Please describe.
There are some text which is pseudo bold font in my pdf file, I want to distinguish it with the regular font text. currently, using the font size，flag and font name, I can't achieve this goal.

[JorjMcKie]

This is a Discussions item and no issue.

There are multiple methods to let non-bold text appear bold:

1. Write the same text twice, with a small offset the second time. The PDF author may have done this character-by-character or in greater chunks (word-by-word, line-by-line, etc.). This can be detected as doubled text in extractions, ("aaabbbccc", or "abcabcabc" etc.) and (largely) overlapping text positions.
2. Thicken the single character borders: normally characters are written by only filling its interior with a fill color. In addition, one can add a stroke color to also write the characters' border lines. This cannot be detected in normal text extraction (and this will not change in the foreseeable future). But you can use page.get_texttrace(). This is a low level text extraction, which returns separate text spans for the fill color version of text and the stroke color version. Each spans contains a "type" key in the dictionary, which is normally 0 (fill color) or "1" (stroke color). Please consult its documentation.

Here is an image explaining point 2:

Imagine both colors are black, then render mode 2 would appear like bold.

[zhangxiaojiawow]

Hello, @JorjMcKie :
Thanks for your quick reply, this should be a discussion. Your method is valid in my case(actually the second situations).