UI Themer

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UI Themer lets customize icons, fonts and pixel density in Sailfish OS.

Read before installing

  • For Sailfish OS 2.1 and above.
  • It requires Theme pack support to be installed.
  • Refresh the homescreen to apply settings.
  • Remember to restore default icons and fonts before performing a system upgrade.
  • For Sailfish X users: changing device pixel ratio needs testing.
  • The option 'Download themes' requires Storeman to be installed.
  • The overlay feature needs ImageMagick to be installed. You can install it via the first run wizard (you can start it from the Tools page pulley menu.

UI Themer


  • Icon theming.
  • Icon overlay.
  • Font theming.
  • Change device pixel ratio.
  • Change DPI for Alien Dalvik.
  • Change icon size.
  • Recovery tools.

Create custom theme packs

Documentation on how to create theme packs available here.


Languages supported:

Request a new language or contribute to existing languages on the Transifex project page.

Usage guide

A usage guide is available here.


Roadmap and features will be tracked on the Trello dashboard.


Thanks to Dax89 and luca247 for support and patience!


If you like my work, please consider to donate via PayPal.

Application versions: 
File sailfishos-uithemer-1.3.0-25.armv7hl.rpm132.23 KB01/12/2018 - 21:02
File sailfishos-uithemer-1.3.0-25.i486.rpm135.82 KB01/12/2018 - 21:02
File sailfishos-uithemer-1.3.1-1.armv7hl.rpm135.03 KB04/12/2018 - 15:14
File sailfishos-uithemer-1.3.1-1.i486.rpm138.79 KB04/12/2018 - 15:14
File sailfishos-uithemer-1.3.2-4.armv7hl.rpm133.64 KB07/12/2018 - 19:33
File sailfishos-uithemer-1.3.2-4.i486.rpm137.36 KB07/12/2018 - 19:33
File sailfishos-uithemer-1.3.3-6.armv7hl.rpm134.42 KB10/12/2018 - 18:17
File sailfishos-uithemer-1.3.3-6.i486.rpm138.04 KB10/12/2018 - 18:17
File sailfishos-uithemer-1.3.3-9.armv7hl.rpm134.46 KB12/12/2018 - 21:58
File sailfishos-uithemer-1.3.3-9.i486.rpm138.05 KB12/12/2018 - 21:58
File sailfishos-uithemer-1.3.3-10.armv7hl.rpm134.45 KB12/12/2018 - 22:04
File sailfishos-uithemer-1.3.3-10.i486.rpm138.07 KB12/12/2018 - 22:04

* Sun Dec 9 2018 1.3.3
- Added cover action to reapply current icons.

* Tue Dec 4 2018 1.3.2
- Added keyboard navigation.

* Tue Dec 4 2018 1.3.1
- Restore page redesigned.
- Dockbar redesigned.
- Updated translations.



fravaccaro's picture

that's the awesome work of chenliangchen, but unluckily I'm not able to share it :(

kaulian's picture

I found
After read this link
In fact in (for my gemini) i have a lock file
It /etc/dconf/db/vendor.d/silica-configs.txt
I just comment line about ratio and update as root
After that i can change ratio

malibu's picture

Thanks for answer. I tried it but unfortunately it doesn't work, the value is still coming back to 1 by itself. Is this possible that patches cause that ? Sorry for my english ;D

fravaccaro's picture

My pleasure :)

Would you mind providing the output of

ls /etc/dconf/db/vendor.d/locks

malibu's picture

Output : screen-rotation.txt

And screen-rotation.txt contain only this line : /desktop/jolla/components/screen_rotation_angle

malibu's picture

Great app, thanks a lot.
I just get a problem since a long time ( app is updated ! ):

Device pixel ratio stay blocked on 1.
(Jolla phone 1, this was working before. But i don't know which version bring that. )

fravaccaro's picture

Hi, thank you.

You may need to reinstall themepacksupport.

DameCENO's picture

fravaccaro, help, just upgraded to 2.1.3 and the display density submenu is gone, and fonts won't apply anymore, how can I fix it, or do we need an upgrade of the app? I can't imagine using Jolla 1 without UI Themer.

fravaccaro's picture

Display submenu from where?

As for rhe fonts, they don't apply if you forgot to unapply them before upgrading. Check the Tools menu to reinstall them.

hardy_magnus's picture

u r a savior. today i upgraded, forgot to restore defaults n the fonts wont change. thank to fravaccaro we have tools menu . hey i have n9 font, can u tell me how to appy them ?

DameCENO's picture

Sorry for the mix up, in UI Themer, I had forgotten how to locate the pixel density option but I have. As for the fonts, I had to run pkcon refresh then pkcon install sailfish-fonts to have them applying again as I always forget to revert to default font before upgrading.

But as for the pixel density is just as when i upgraded to lijoki, it remains on the default value and won't change no matter what I try. I have gone through the instructions you gave the last time with dconf update and all, installing and reinstalling ui themer, nothing works, I  need assistance on that please

fravaccaro's picture

Try to reinstall themepacksupport too.

DameCENO's picture

Did the trick perfectly! Uninstalled Themepack support then ran the commands you previously asked me to dconf update and the rest and it works once again! Thanks man, I owe you one. I don't think I will forget to revert to default font and pixel ratio before upgrading the OS next time :D


An observation as well, after making it work themepack support icon disappeared form the home screen but can still be run via therminal, don't know if that's normal

fravaccaro's picture

I'm glad to hear you solved it :)

Yeah, it's an intended behavior, as I think that after the installation of UI Themer, a quick access to the terminal GUI is no longer needed.

DameCENO's picture

Hi fravaccaro I have updated to Iijoki and updated the ui themer but the same issue occured as when I try installing to 0.4 of ui-themer, the pixel ratio slider remains at the default value, I have removed the ui themer altogether and run the touch and dconf reset commands but to no avail. What should I do about it

Plus the suggestion of adding font preview before applying would be awesome

fravaccaro's picture

Sorry, I didn't read your message but I'm glad (according with your reply below) that you could sort it out.

As for the font preview, I'm afraid I won't be able to implement it, but I contacted the original dev of the GUI so I hope we can come up with something...stay tuned :)

MoritzJT's picture

UI of this GUI is broken on my Jolla C. Default density is  1.25 - lowering it breaks most system icons. Any idea?



fravaccaro's picture

try to install themepacksupport 0.3.3-3

DameCENO's picture

Actually the version 0.3.3-5 of themepacksupport is said to be compatible with UIThemer so installing it was enough to fix the aspect ratio slider. Thanks fravaccaro.

jfebrer's picture

Great app!

Where did you get the Nokia Pure theme?

fravaccaro's picture


I extracted the fonts from my N9. Unluckily I don't think I can share it :/

gedeon's picture


Why? It is just a theme, probably noone would care, but many people would be very happy! When I have first seen the N9 icons on this screenshot I fell in love again, please! :) I still have an N9 in my cupboard but I don't know how to get the icons and the font from it unfortunately. :( Thanks in advance!

fravaccaro's picture

Hi! The icon theme is by chengliangchen, he has not decided to publish it yet so you'd better ask him directly :) 

As for the Nokia Pure font, I still don't know if there's a way to publish it legally - it's the only issue that has been preventing me to publicly share it.

gedeon's picture

Re, thank you for your answer, I will try to talk with him. Ok, will talk about the font as well, hopefully not dangerous :) .

DameCENO's picture

Just in to report that the version 0.4-1 of the patch breaks the pixel ratio slider in UI themer, as the value is always set to the default 1 as soon as one leaves the UI themer screen the value is reset. Had to return to the version 0.2-1 to have it working again. I am on on Jolla 1

fravaccaro's picture

Can you try to reinstall the package? As far as it's been reported, it works on the Jolla 1.

DameCENO's picture

I had to unistall it and revert back to 0.2-1 will try to update and get back to you. another question : is it safe to have ui themer and Tablet ui both installed? with what happened had to unistall tablet ui altogether.


And to make things clearer, all patches that come with the patch work flawlessly, just that it breaks the pixel ratio slider which doesn't change from the default value. Everything else works fine


Confirmed, the problem is with the version 0.4-1 of this patch, as I didn't install the Tablet UI this time aroiund. All patches work fine but the pixel ratio slider remains on the default value no matter what I do, homescreen refresh, even reboot, nothing changed. This default value of the pixel ratio option now seems too big for me, that is how cool this patch is. Hope the next version will fix this, and I am ready to assisst in providing what ever info you might need to get it done. Going back to 0.2-1 I can't do without this awesome patch

fravaccaro's picture

May you please run this command with UI thener 0.4 installed and without it?   ls /etc/dconf/db/vendor.d/locks/

DameCENO's picture

The command with the version 0.2 of the UI themer installed return the following output



As I have my hands full at the moment, will run the command with the version 0.4 installed in an hour or so when I leave work and reach home

The command with the version 0.4 installed returns the following output
screen-rotation.txt ui-configs.txt

fravaccaro's picture

Ok, may you repeat that command with no UI themer installed and with 0.4?