File->Launch->Open with... (Alt+L)
Then I have two batch files
tidyuphtml.cmd
c:\...\tidy\tidy.exe -config c:\...\tidy\tidyuphtml.ini %1 %2 %3 %4 %5
tidyuphtml.ini
indent: auto indent-spaces: 2 wrap: 0 markup: yes output-html: yes output-xml: no input-xml: no show-warnings: yes numeric-entities: yes quote-marks: yes quote-nbsp: yes quote-ampersand: no break-before-br: no uppercase-tags: no uppercase-attributes: no char-encoding: raw new-inline-tags: option, cfif, cfelse, math, mroot, mrow, mi, mn, mo, msqrt, mfrac, msubsup, munderover, munder, mover, mmultiscripts, msup, msub, mtext, mprescripts, mtable, mtr, mtd, mth new-blocklevel-tags: cfoutput, cfquery new-empty-tags: cfelse tidy-mark:no wrap-attributes:no write-back:yes
tidyupxml.cmd
c:\...\tidy\tidy.exe -config c:\...\tidy\tidyupxml.ini %1 %2 %3 %4 %5
tidyupxml.ini
char-encoding:raw indent:yes indent-spaces:2 input-xml:yes output-xml:yes quiet:no tidy-mark:no uppercase-attributes:no uppercase-tags:no wrap:0 wrap-attributes:no write-back:yes
While you have your HTML or XML opened in editor press Alt+L and browse to location of *.cmd files. Whether you need to reformat HTML or XML choose your batch file and click OK. Then you will be notified of file modification. Click yes and your file is reformatted (this operation is not undoable and all unsaved changes will be lost)
In Open with... window you can also set your default "plugin" directory.
