Make the browser yours
Shape the colors, visuals, and sounds of your browser through one guided workspace
Brought to you by the original Opera GX modding YouTuber, MrJamz · Sponsor this project here
Choose a starting point
Choose the categories you want to include in your mod
Start with the essentials that define your mod
Optional components for a more complete browser experience
Popular choices / Theme
Schema v2
COLOR
Buttons, active tabs, outlines, and browser highlights
COLOR
The foundation Opera GX uses for browser surfaces and panels
◆ Opera GX locks GX secondary base lightness to 16% in dark mode
More modding / App icon
Schema v2
ICON MEDIA
This will be the desktop or mobile icon for the application
PNG · JPG
Recommended icon size: 512×512
Curved corners are exported as transparent pixels
LIVE PREVIEW
No icon selected
CORNER CURVE GUIDE
Popular choices / Wallpaper
Schema v2
MEDIA
Add a static image or animated file for the selected browser mode. Files remain only in this browser visit
PNG · JPG · WEBP · WEBM · MP4
Animated wallpaper detected
START PAGE
Enable additional settings here to custom tune your wallpaper page
LIVE PREVIEW
This simulated start page uses the selected theme’s accent and GX secondary base colors
Popular choices / Music
Schema v2
AUDIO
Add the names and authors that Opera GX should show for your mod’s music
MP4 audio will be converted to MP3 in this browser
More modding / Browser sounds
Preview each included sound or upload a replacement for that browser event.
Schema v2
.mp3, .wav, or .ogg file. The Play button uses your uploaded sound immediately.More modding / Keyboard sounds
Preview each included typing sound or upload a replacement for that keyboard event.
Schema v2
.mp3, .wav, or .ogg file. Add extra letter sounds only when you want more typing variations.More modding / Fonts
Assign one or more TrueType font variants to Opera GX headers and body text.
Schema v2
.ttf files. Uploaded fonts are previewed locally and included only after you save.HEADER
The quick brown fox jumps over the lazy dog
BODY
Pack my box with five dozen liquor jugs. 0123456789
More modding / Sidebar icons
Preview the included icons or replace individual sidebar roles with your own Lottie JSON files.
Schema v2
.json file. Only user-uploaded replacements will be saved.More modding / Shaders
Preview an Opera GX SkSL effect over a light or dark webpage before packaging it.
Schema v2
.sksl file. Compilation and previewing happen locally.shaders/*.sksl
Preview behavior can differ slightly from Opera GX. Test the finished mod in Opera before publishing.
More modding / Speed Dial effects
Hover the store-style tiles to test a real Opera GX Speed Dial effect.
Schema v2
.txt or .sksl files must use iChunk and the iArgs animation array.Select one to previewThis emulates Opera’s standard hover-frame contract. Final rendering can vary slightly inside Opera GX.
More modding / Stickers
Arrange the sticker set that will be included with your mod.
Schema v2
sticker1.webp, sticker2.webp, and so on.4 stickersThe four included stickers are ready.
More modding / Splash screen
Choose the short startup video that plays when Opera GX opens.
Schema v2
.mp4 with audio. Use the video controls to preview its picture and sound.STARTUP VIDEO
MP4
LIVE PREVIEW
More modding / Cursors
Choose a tile to assign a custom cursor role. Pink cursors are shown only as visual references and are never saved.
Schema v2
.cur or .ani file. Only uploaded files are saved; animated cursors play inside their tile.Final setup / Mod icon
Schema v2
MOD ICON MEDIA
This 512×512 image identifies your mod after it is installed in Opera GX
PNG · JPG · WEBP
Output is always saved as icon_512.png
Curved corners are exported as transparent pixels
LIVE PREVIEW
Loading icon_512.png
Build review
Review the saved choices that will be included in your mod
Schema v2