I think that this data is stored in the IndexedDB database as permanent data. I'm not sure that you backup this data reliably, but you should find it in the storage folder in the profile folder.

• storage\permanent\indexeddb+++fx-devtools

cor-el said

I think that this data is stored in the IndexedDB database as permanent data. I'm not sure that you backup this data reliably, but you should find it in the storage folder in the profile folder.

• storage\permanent\indexeddb+++fx-devtools

Thanks for the answer, but there was not any related data on "storage\permanent\indexeddb+++fx-devtools"

This data is stored as BLOB data in the SQLite data database that you find in the idb folder I have this file:

• indexeddb+++fx-devtools/idb/478967115deegvatroootlss--cans.sqlite

cor-el said

This data is stored as BLOB data in the SQLite data database that you find in the idb folder I have this file:

• indexeddb+++fx-devtools/idb/478967115deegvatroootlss--cans.sqlite

Thanks for the answer, I check all 7 tables data, but there was nothing useful and no different with "storage\permanent\indexeddb+++fx-devtools", can you please provide more details?

I'm not sure about a "new" responsive design mode. Previously certain data was stored in preferences (prefs.js). Could you look at about:config and see whether it has your customized data, or only default/obsolete data?

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful.

(2) In the search box above the list, type or paste responsiveUI and pause while the list is filtered

• devtools.responsiveUI.presets => does this list include items you've added?
• devtools.responsiveUI.customHeight, devtools.responsiveUI.customWidth => may be unsaved settings

After looking at MDN, it seems I don't have the new RDM because I have legacy extensions blocking multiprocess. Whoops.

As I wrote above: This data is stored as BLOB data in object_data and SQLite Manager shows it as BLOB (size). You would have to save this data to a file to inspect it (it is 16 bit binary data).

cor-el said

As I wrote above: This data is stored as BLOB data in object_data and SQLite Manager shows it as BLOB (size). You would have to save this data to a file to inspect it (it is 16 bit binary data).

That data is not exist for me!

jscher2000 said

I'm not sure about a "new" responsive design mode. Previously certain data was stored in preferences (prefs.js). Could you look at about:config and see whether it has your customized data, or only default/obsolete data? (1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful. (2) In the search box above the list, type or paste responsiveUI and pause while the list is filtered

• devtools.responsiveUI.presets => does this list include items you've added?
• devtools.responsiveUI.customHeight, devtools.responsiveUI.customWidth => may be unsaved settings

Yes, in prev. RDM we could have own JSON as presets, I actually have a github repo for that. but in new one I could not find any related data about backup/restore presets.

This data is stored as a [key,data] value pairs in the object_data table. You can see the key value as plain text in the screenshot and the data value as BLOB in the data column. Someone would have to create a WebExtension to access this data and convert it to readable format.

An example with BLOB shown as HEX data (export as SQL): ("1","X'306566777570706D742F6566776A6466742F6D7064626D'",null,null,"X'B0010000050178F1FF9E0000800400FFFF7B22637573746F6D223A5B7B226E616D65223A224305127820446576696365222C227769647468223A3830302C22686569676874223A36010DF03E706978656C526174696F223A312C22757365724167656E74223A224D6F7A696C6C612F352E3020284D6F62696C653B2072763A33302E3029204765636B6F2F010C202046697265666F782F010D48222C22746F756368223A747275657D5D7D0000'");

cor-el said

This data is stored as a [key,data] value pairs in the object_data table. You can see the key value as plain text in the screenshot and the data value as BLOB in the data column. Someone would have to create a WebExtension to access this data and convert it to readable format. An example with BLOB shown as HEX data (export as SQL): ("1","X'306566777570706D742F6566776A6466742F6D7064626D'",null,null,"X'B0010000050178F1FF9E0000800400FFFF7B22637573746F6D223A5B7B226E616D65223A224305127820446576696365222C227769647468223A3830302C22686569676874223A36010DF03E706978656C526174696F223A312C22757365724167656E74223A224D6F7A696C6C612F352E3020284D6F62696C653B2072763A33302E3029204765636B6F2F010C202046697265666F782F010D48222C22746F756368223A747275657D5D7D0000'");

In my case the value column is empty, btw how you found out RDM store the data here? is there any document about that?

I usually check the Bugzilla website and read comments in the source code at the DXR website if I'm curious how it works. In this case it is a bit cryptic how this works since key names and data values aren't readable (i.e. it is not all plain text, but also complex binary data).

• 306566777570706D742F6566776A6466742F6D7064626D ->
  0efwuppmt/efwjdft/mpdbm
• 7B22637573746F6D223A5B7B226E616D65223A224305127820446576696365222C227769647468223A3830302C22686569676874223A36010DF03E706978656C526174696F223A312C22757365724167656E74223A224D6F7A696C6C612F352E3020284D6F62696C653B2072763A33302E3029204765636B6F2F010C202046697265666F782F010D48222C22746F756368223A747275657D5D7D ->
  {"custom":[{"name":"C??x Device","width":800,"height":6?

ð>pixelRatio":1,"userAgent":"Mozilla/5.0 (Mobile; rv:30.0) Gecko/?? Firefox/? H","touch":true}]}

We could use an edit/backup/restore feature for the device settings. You currently can't make changes and as soon as you would resize the window then all other settings are reset.