Hi "pepperminty",
I did that in standard Firefox 56 for Linux just the way I explained before (File->Save As->Web page Complete). I saved the web page to my "/Downloads" folder because I use the "firejail" sandboxing application.
Like I also said, the non-Firefox browsers are giving me that same weird "404" message you got.
I think this is because of this particular website's design, maybe that pop-up message at the bottom interferes, but that would require checking other websites, which I have not done yet.
This is worth posting on the various browser's development and bug tracker websites. We should be able to save the web pages as HTML like before. Perhaps the websites are purposely try to prevent that now?
The other methods I brought up will allow users to copy web page text, or print to PDF, etc... With this particular website, when I printed to PDF I could not select text like you can with other wesbites (yet), but it does create perfect PDF copies of the web page(s).
I also have a lot of Firefox add-ons (which most people are not supposed to do), but I am a computer expert and I try (test & experiment with) various add-ons. I do not think that any of the Firefox add-ons I have installed would make a difference with saving webpages through the File->Save As option.
FYI: Here is a current list of my Firefox add-ons which I could not easily provide without installing this "extension-list-dumper-2" addon in link below. Keep in mind that some of these add-ons are part of Firefox and were not added by me. Unfortunately when Firefox 57 comes out soon, a lot of these add-ons will not work anymore because they are "legacy" add-ons.
https://addons.mozilla.org/en-US/firefo ... -dumper-2/
Code: Select all
Application: Firefox 56.0 (20171004094206)
Operating System: Linux (x86_64-gcc3)
Total number of items: 66
- Activity Stream 0.0.0
- AppLauncher 0.8.7.1-signed.1-signed
https://addons.mozilla.org/en-US/firefox/addon/applauncher/?src=api
- Application Update Service Helper 2.0
- Bulk Media Downloader 0.2.0
http://add0n.com/media-tools.html
- Case Changer 2.0.0.18.1-signed.1-signed
http://www.grizzlyape.com/
- Click-to-Play staged rollout 1.4
- Copy Links 0.1.7.1-signed.1-signed
http://ku.myftp.org/
- Disconnect 5.18.21
https://disconnect.me/
- Extension List Dumper 2 1.0.2
https://addons.mozilla.org/en-US/firefox/addon/extension-list-dumper-2/?src=api
- External Application Buttons 2 0.13.1-signed.1-signed
https://addons.mozilla.org/en-US/firefox/addon/external-application-button/
- FEBE 8.9.3.1
http://softwarebychuck.com/
- Firefox Screenshots 10.12.0
https://pageshot.net/
- FireFTP 2.0.31
http://fireftp.net
- FireShot 0.98.93
http://screenshot-program.com/fireshot
- Follow-on Search Telemetry 0.9.3
- Form Autofill 1.0
- Google Docs Viewer 1.8.9.1-signed.1-signed
https://addons.mozilla.org/en-US/firefox/addon/google-docs-viewer-pdf-doc-doc/
- gtranslate 0.14.0
https://addons.mozilla.org/firefox/addon/gtranslate/
- Hoxx VPN Proxy 2.3.0
https://hoxx.com
- HTTPS Everywhere 2017.10.30
https://www.eff.org/https-everywhere
- ImTranslator 10.52
http://imtranslator.net/plugin-tr.asp
- KDE Connect 0.1.3
https://github.com/pdf/kdeconnect-chrome-extension
- Link Gopher 1.3.3.1-signed.1-signed
http://sites.google.com/site/linkgopher/
- link2email 1.1.3
http://gonewmedia.de
- Media Converter and Muxer 0.2.5
http://firefox.add0n.com/media-converter.html
- Messenger for Google™ Hangouts 0.1.9
http://add0n.com/google-hangouts.html
- Mozilla Archive Format 5.2.0
http://maf.mozdev.org/
- mpv-youtube-dl-binding 0.1.0-alpha.3.1-signed
https://github.com/antoniy/mpv-youtube-dl-binding
- Multi-process staged rollout 3.00
- NetVideoHunter 1.20
http://www.netvideohunter.com
- NewScrollbars (aka NoiaScrollbars) 1.2.8
https://addons.mozilla.org/addon/noiascrollbars/
- OneTab 1.23.0
https://www.one-tab.com
- Online Convert 1.4.1-signed.1-signed
http://www.online-convert.com/
- Open in Private Window 0.2.1.1-signed.1-signed
http://loucypher.github.com/openinprivatewindow/
- Password Exporter 1.3.4
http://passwordexporter.fligtar.com
- Personas Plus 1.8.3
https://addons.mozilla.org/themes/
- Photon onboarding 0.1
- Plasma Integration 0.0.3
https://addons.mozilla.org/en-US/firefox/addon/plasma-integration/?src=api
- Pocket 1.0.5
- Print Friendly & PDF 2.2.0
http://www.printfriendly.com
- Privacy Protector Plus 0.1.7
http://mybrowseraddon.com/privacy-plus.html
- Privacy Settings 0.2.6
http://firefox.add0n.com/privacy-settings.html
- Private Tab 0.2.2
https://addons.mozilla.org/en-US/firefox/addon/private-tab/?src=api
- ProfileSwitcher 1.7.6.1
https://freeshell.de/~kaosmos/index-en.html
- Saved Password Editor 2.10.4
https://addons.mozilla.org/addon/saved-password-editor/
- ScribeFire Classic 4.0.0.1.1-signed.1-signed
http://www.scribefire.com/classic/
- ScribeFire Next 4.3.1.1-signed.1-signed
http://www.scribefire.com/
- Send Tab URLs 2.3.1
http://aecreations.sourceforge.net/sendtaburls/
- Shield Recipe Client 65.1
- Shortkeys (Custom Keyboard Shortcuts) for Firefox 2.0.20
https://github.com/pmalecka/chrome-shortkeys
- Status-4-Evar 2017.08.20.15
http://forums.mozillazine.org/viewtopic.php?f=48&t=2001965
- Stop Fingerprinting 0.1.0
https://addons.mozilla.org/en-US/firefox/addon/stop-fingerprinting/?src=api
- Tab Memory Usage 0.2.7
http://mybrowseraddon.com/tab-memory.html
- Tab Mix Plus 0.5.0.4
http://tabmixplus.org
- Tab Tree 1.5.1
https://github.com/traxium/tabtree
- Text to Speech (TTS) 0.1.7
http://mybrowseraddon.com/text-to-speech.html
- Translate This! 3.5.1
https://github.com/BoringCode/TranslateThis
- uBlock Origin 1.14.16
https://github.com/gorhill/uBlock#ublock-origin
- UnPlug 2.059
https://unplug.dbatley.com/
- User Agent Overrider 0.5.2
https://github.com/muzuiget/user_agent_overrider
- User-Agent Switcher 0.2.0
http://mybrowseraddon.com/useragent-switcher.html
- Video Assistant 1.0.4
https://addons.mozilla.org/en-US/firefox/addon/video-assistant/?src=api
- VLC Youtube Shortcut 0.8.3.2
https://addons.mozilla.org/en-US/firefox/addon/vlc-youtube-shortcut/?src=api
- Web Compat 1.1
- YouTube ALL HTML5 3.2.0
https://addons.mozilla.org/en-US/firefox/addon/youtube-all-html5/?src=api
- YouTube Video and Audio Downloader 0.5.9
Newer Firefox versions are stopping the previous MHT web page saving options and apparently other archiving options for some reason? I do not know if that is being replaced with some other save web page options. See last screenshot below.
KDE users do have a Plasma version of Firefox and Thunderbird which I usually use, but I did not use that for your post. After re-installing my Firefox for KDE Plasma I re-tested the "File -> Save As" on this website and it still worked.
viewtopic.php?f=56&t=254201&hilit=kde+firefox
Hope this helps ...
Firefox_56sm.jpg
Firefox_SaveAs1sm.jpg
Firefox_SaveAs2sm.jpg
Firefox Message