PDF text line contains apostrophe; are not searchable

[subha94u]

When byte values <= 127 are interpreted as ASCII characters but when >127 are represented by multi-byte sequences and fonts with /Encoding /WinAnsiEncoding and most likely with `/Mac*Encoding'

I am facing a issue i.e in my PDF there are some text contains apostrophe; (e.g John's) but this texts are not searchable even no other word will search in that line. Then I did some google and found that its related with some encoding problem. Please have a look the problem and let me update with the solution.

Thanks

[KurtCode]

I am not sure I understand your first sentence.

A document sometimes uses a standard character encoding, like MacRoman or Windows encoding. Other may carry a custom mapping from character codes to Unicode characters. Finally, there are fonts that have their own idea of how to encode characters. The Computer Modern font is just one such font that I've come across.

I suspect the line with the apostrophe is written in a font that we do not know how to derive proper text content from.

[subha94u]

Here is a PDF https://www.filesanywhere.com/fs/v.aspx?v=8a726b865d6573b5a3ac In this PDF when I search a text with apostrophe is not searching.

[songbaoqiang]

It‘s a common problem. Has anyone a idea to get ride of it?