[Feature request] Support data URIs

[emilio]

Steps to reproduce

• Tap on the URL bar.
• Write data:text/html,<input type=file>

Expected behavior

• See a file input (probably).

Actual behavior

• Searches for my data URL.

Device information

• Android device: OnePlus 6
• Fenix version: 1.0.1916

┆Issue is synchronized with this Jira Task

[emilio]

Not sure how important this is to fix, fwiw. I don't expect many people to rely on this. It comes handy to test issues though, I was trying to see if the upload issue was GitHub-specific. But I suspect now it's not, per #1467

[makotokato]

Related to https://bugzilla.mozilla.org/show_bug.cgi?id=1582606. GV API uses content principal, so data: url won't be allowed.

[karlcow]

on nasa Website webcompat/web-bugs#39953
The app is crashing because of a navigation to a long data-url

[lnicola]

This is also useful to quickly send text between devices using the Send Tab feature.

[lnicola]

data:text/plain,foo now works, but not the original test case with data:text/html.

[cartr]

In Nightly 200812 06:01 (Build #2015757491), attempting to type data:text/html,Hello into the address bar yields the following error message:

Cannot complete request

Additional information about this problem or error is currently unavailable.

[kellda]

This works now (along with view-source, moz://a, some about URLs like about:mozilla). This is great.

However the MIME type can't be omitted: data:text/html,test works, but data:,test doesn't (as of stable 88.1.4).

[masayuki-nakano]

It seems that still does not support data URI if it contains JS (<script> and event handler attribute).

[kellda]

I just tested on latest stable, and both <script> and event handler worked. However, you have to replace spaces with %20. That's maybe why it didn't worked for you. (Or it wasn't implemented and now is)

[plwt]

User feedback: https://support.mozilla.org/en-US/questions/1392211

[dyura]

I would like to add more details on the usage of my data urls. I use them a lot for three main purposes.

• On desktop, I use it all the time as scratchpad data: text/html, <title>Edit</title> or even data:text/html,<textarea></textarea>.
• I use a lot of small javascript utilities to print dates in various formats, change text case, etc. These javascripsts are embedded in data: text/html,......
• I use data urls to bookmark many important notes, various numbers, names. Everything that goes beyond logins.
  Thus, these utilities and the information are available through the Firefox account on my devices, including Android.

Today on Android the data url still works via bookmarks. Previously, we could type "data:...." directly into the address bar. I found one of my old phones running Firefox 67.0. In Firefox 67.0 there is no issue with data URLs. Now when I type data:,str1 I am redirected to the Google search result: https://www.google.com/search?q=data%3A%2Cstr&ie=utf-8&oe=utf-8&client=firefox-b-m
Unfortunately, currently the data url doesn't work at all on iOS.

[csadilek]

Moved to bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1809255

Change performed by the Move to Bugzilla add-on.