How to replace a substring that starts with and end with another substring?

Hi,
I am trying to parse data from HTML tables. First I want to remove all useless tags like <font>. Now, how can I remove substrings like-
*<font face="Verdana, Arial, Helvetica, sans-serif" size="1">My_Data_to_parse</font>*
I was searching for any method which replaces a substring what starts with a substring (in this case "<font") and ends with another substring (in this case ">") . Is there any method like that? Or any better solution?
Another situation like the following-
*<td align="left" height="30" width="100%">*
In this case I want to remove all the height, align , width etc and make it as simple as "<td>". How can I do that?
Finally, all I am trying to do just to parse data from the tables in a html file. Is there any parser API or library to help me do that? Or to bring the data down to array from the tables based on table structure? Please suggest me.
Thanks in advance.

probably the best place to start is to search for the "<keyword" of all of the html keywords, then search for the location of the next ">" - this will indicate the end of the <keyword> opening tag.

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Hi,
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Hello Creators,
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How to replace a substring that starts with and end with another substring?

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