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How to display *.html.gz files in browser for local files

  • 4 ŋuɖoɖowo
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I need to find a way to allow Firefox to display gzipped local files named like *.html.gz in the browser, for a new application I am working on.

Netscape 4.79 can do this, but it's very out-of-date and lacks modern Javascript and CSS support.

The behaviour of Firefox on local files named *.html.gz is to download them. Why? The files are already saved on the local disk...

Is there a configuration setting I can change to make Firefox display these files?

Ideally, ANY local file with a double extension of *1.*2.gz should be decompressed in the browser. Where *1 would be a name and *2 would be a file type that the browser can normally display (like HTML) or load (like Javascript/CSS,etc.).

If a user really does want to download a local file of this type, there could be a right click option like "Save Link As Uncompressed" or an option in Firefox config to switch this behaviour off.

Needing to run a webserver on the PC just so the browser can display compressed html is a bit ridiculous...

I need to find a way to allow Firefox to display gzipped local files named like *.html.gz in the browser, for a new application I am working on. Netscape 4.79 can do this, but it's very out-of-date and lacks modern Javascript and CSS support. The behaviour of Firefox on local files named *.html.gz is to download them. Why? The files are already saved on the local disk... Is there a configuration setting I can change to make Firefox display these files? Ideally, ANY local file with a double extension of *1.*2.gz should be decompressed in the browser. Where *1 would be a name and *2 would be a file type that the browser can normally display (like HTML) or load (like Javascript/CSS,etc.). If a user really does want to download a local file of this type, there could be a right click option like "Save Link As Uncompressed" or an option in Firefox config to switch this behaviour off. Needing to run a webserver on the PC just so the browser can display compressed html is a bit ridiculous...

All Replies (4)

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Why do you have gzipped HTML files?

If a web server transmits a page with a response header indicating that the body of the response is gzipped, then Firefox does know how to decompress it. However, I don't know whether you can fake that with a local file.

Can any of your other browsers open those files?

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I am compressing the files with gzip before they are to be transmitted via radio broadcast. Compressing the files reduces the size to less than half, and improves performance by allowing a slower and more robust modulation method and better error correction.

Only Netscape 4.79 can open these files directly.

Yes, I am currently running a simple web server to serve the folder contents to localhost, with the correct headers.

But the browser *could* decode the *.html.gz files if it was possible to configure it to, and it would be far simpler and less trouble for other people to use.

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Here are some places to submit feature suggestions, depending on your desired style of interaction:

Discussion Sites/Advocacy

Bug Tracking System

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Thanks for your helpful suggestions. I will follow those up.

I do still wonder if there is some hidden way to get the browser to read the *.html.gz local files though....

In the past, this current behaviour of not decoding local files has been regarded as a bug by others: https://bugzilla.mozilla.org/show_bug.cgi?id=52282