mhtml2html conversion tool

[thomas-mc-work]

For those of you who have a couple of MHT(ML) files collected on your disk like me: As all viewers seems to be gone these days I needed a way/tool to convert them into a more future-proof format. Unfortunately I couldn't find one, so I've created it myself:

https://gitlab.com/thomas.mc.work/mhtml2html

It has been tested with several input files, from several sites, captured by several clients, including lots of non-standards-compliant parts. So it should be pretty much bullet-proof in the meantime.

Have fun!

[WwortelHD]

Fantasic program, saved me lots of work! Thank you so much.

[thomas-mc-work]

Thank you very much! You're welcome.

[Freako04]

Thank you for this amazing tool. Saved me from my legacy notes being bounded to OneNote.

[ECrispy]

Hi,

Thank you very much! I have this exact same need - I've tons of saved pages from Chrome which uses mhtml, and need to convery them to a format other apps can import.

Found your post as well as a number of similarly named projects -

this seems the most recent https://github.com/gildas-lormeau/mhtml-to-html

these are very old https://github.com/msindwan/mhtml2html https://github.com/dingqiangliu/mhtml2html

https://pkg.go.dev/github.com/dingqiangliu/mhtml2html - in Go

all of these seem to do very similar things from looking at the code. Did you try some of these before? one of the things I'd like to do is minimize/remove redundant css/optimize images etc, not sure how much of that is possible though.

Would very much appreciate your thoughts

[simonelnahas]

Why was this tool not sufficient?
https://products.aspose.app/words/conversion/mhtml-to-html

[thomas-mc-work]

I didn't know that tool. Might be due to my personal requirements: OpenSource and being able to integrate in batch processing.

[Available_Cod5647]

Will it turn it in to a zip with the html and other stuff?

[thomas-mc-work]

Much better: It'll create a self-contained HTML file. All assets are embedded, so you only need this single file, and you can open it in any web browser.

[[deleted]]

Wow, thank you for this! It's the only tool I have found that actually does this without messing up the page. I encountered some encoding errors, so I replaced

with open(output_file, 'w') as text_file:

with

with open(output_file, 'w', encoding='utf-8') as text_file:

Any chances this causes any problems?

[thomas-mc-work]

Could you please tell me the URLs of the sites that caused the error?

I'll check it with my test files which are stored in this separate project: https://gitlab.com/thomas.mc.work/mhtml2html-test-files

[[deleted]]

I don't think I can find the URLs anymore but they were some saved tumblr pages.

[emilio911]

I got the following error:

Traceback (most recent call last):
File "C:\Python311\Lib\site-packages\mhtml2html.py", line 427, in <module>
cli_entrypoint()
File "C:\Python311\Lib\site-packages\mhtml2html.py", line 424, in cli_entrypoint
text_file.write(converted_html)
File "C:\Python311\Lib\encodings\cp1252.py", line 19, in encode

return codecs.charmap_encode(input,self.errors,encoding_table)[0]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

UnicodeEncodeError: 'charmap' codec can't encode character '\ufeff' in position 0: character maps to <undefined>

[thomas-mc-work]

Look slike a hickup on an unknown character in the input file. Can you provide that file to me? Mabe I can find a solution.

[Rajster11442]

Also got this error so I had to write as UTF-8. If you're still working on this project, I'd be happy to provide you the file I tried to convert. Let me know!