TheNerdyBox

Stream Composer Suite

v1.20.0

A free desktop app for building stream overlays — lay a scene out on a canvas, then send it straight into OBS as a Browser Source. Chat, alerts, avatars, countdowns and now-playing widgets all run on your own PC, with no cloud service in the middle.

Free, for 64-bit Windows. Every build so far is a preview release — it works and is in daily use, but none has been through a wide public test yet.

Download Stream Composer SuiteSource on GitHub
v1.20.016 October 2026

A fancy new look for Popup Slides, and what you lay out in the editor is finally exactly what shows up in OBS.

Added

  • Deluxe style for Popup Slides. Pick “Deluxe” in the new Style dropdown and your slider springs in, the icon pops with a glow and a shine, the panel unfurls, the text types itself in letter by letter, a thin progress bar shows how long each slide has left, and the icon flips over to the next one. It uses your own slides, icons, colors and timing, and it all runs offline. The first time I saw it pop up in OBS I wanted it in the app, so here it is. Your existing sliders stay on Classic until you switch them.
  • Popup Slides replay on demand. Hide the source in OBS, show it again, and the slides start over from the first one. My old slider did that and I missed it: with my replay timer set to 15 minutes, turning the eye back on used to mean waiting out the rest of the timer.
  • A right-click menu on the canvas: Center on canvas (or just horizontally or vertically), Stretch to canvas, Fit to canvas, the layer order options, Export as its own source, and Delete.
  • A “Before you go live” checklist after every export. It lists what each piece needs to work in OBS and catches mistakes like a PNGTuber with no image, which would just be invisible. The same notes go in the README next to your export.
  • Connect your PNGTuber to OBS right from its panel. Press Connect / Test, pick your audio input from the list, and a live line tells you whether it can hear OBS.
  • The uninstaller gets the same dark, branded welcome and finish screens as the installer.

Changed

  • New PNGTubers react to an OBS audio source by default. OBS blocks microphone access for browser sources, and its Interact window has no option to allow it, so the old default couldn’t work for most people (me included). Microphone mode is still there, marked as experimental.
  • Nothing setup-related gets drawn into your stream any more. Messages like “Mic access needed” used to sit right on top of your scene. They show up in the app and the README instead.

Fixed

  • Items show up in OBS exactly where you put them in the editor. The editor was drawing everything shifted up and to the left by half its own size, which is how my social slider ended up half off-screen. Projects from older versions get converted when you open them, so everything stays where you saw it.
  • New items land in the middle of the canvas.
  • The installer’s finish screen is dark and branded like the welcome screen, and the artwork isn’t squished any more.
  • Dialogs like New Project and Save to Library open centered instead of stuck in the top-left corner.
  • Preview works on a brand-new project. If nothing in it used a custom image yet, you got “The system cannot find the path specified” instead of a preview. I hit that one the first time I tried Deluxe in a fresh project.
v1.18.31 September 2026

One Windows installer instead of two, and it now tidies up after itself.

Changed

  • There is now a single Windows installer, the .exe. The separate .msi download is discontinued. Windows treated the two as unrelated programs, so installing one never replaced the other — you could end up with two copies registered at once, two entries in Add/Remove Programs, and two icons in the system tray.
  • The installer’s Welcome and Finish screens are fully branded, with the artwork across the whole page and the text restyled to read clearly against it.

Fixed

  • Installing the .exe now finds an older .msi install and offers to remove it first, so you end up with one copy instead of two. If you installed anything from v1.16.3 to v1.18.2 as an .msi, this is the update that sorts it out.
  • Uninstalling no longer leaves behind a note of where the app used to live — a leftover that could send a later install to the wrong folder.
v1.18.218 August 2026

Readable text on the installer’s branded screens.

Fixed

  • The installer’s Welcome and Finish screens show a dark branded background, but their title and description text was black against it and effectively invisible. Both now read light.
v1.18.118 August 2026

Twitch sign-in for alerts is live.

Fixed

  • “Connect Twitch Account…” is no longer greyed out. Twitch Alerts can be signed in to and used for real.
v1.18.018 August 2026

On-device Twitch alerts — a free, local alternative to a cloud alert box — plus minimize to tray.

Added

  • Twitch Alerts: a new canvas item with one rule per event (Follow, Subscribe, Cheer, Raid). Give each one your own image or video, an optional sound, and how long it stays on screen. Once exported it connects to Twitch’s live event feed and plays your files the moment a real event happens — all from inside OBS, so the editor does not need to stay open.
  • Signing in uses a short code you type into a page on twitch.tv that you open yourself. Nothing ever asks for your Twitch password inside the app.
  • Minimize to tray: closing the window now hides it to the system tray instead of quitting. Right-click the tray icon for Show or Quit.
v1.17.018 August 2026

Export one item on its own, instead of only the whole canvas at once.

Added

  • “Export as its own source…” in the Properties panel for whichever item is selected. A plain image or frame exports as a real .png, ready to drop into OBS as an Image Source. Anything live — chat overlay, avatar, popup slide, countdown, viewer pet, pet roster, now playing — exports as its own small Browser Source, with a short README saved alongside it.
  • Why it helps: exporting a whole scene locks every item in it to one shared layer, so you cannot reorder individual pieces against your webcam or game capture. An item exported on its own gets its own slot in OBS’s source list — resize, reposition and layer it freely, and add more pieces later without rebuilding what is already in place.
v1.16.616 August 2026

Making something that already worked easier to find.

Added

  • An exported scene that contains images now includes a short README in its assets folder, explaining that each image in there is the finished, already-edited version and can be added to OBS on its own as an Image Source. That was always true; it just was not obvious.
v1.16.516 August 2026

More ways to choose a colour in the Background Generator.

Added

  • Every colour field — the solid colour and each gradient stop — now takes RGB numbers as well as a hex code, and the two stay in step whichever one you type into.
  • A “Pick from screen” button on each colour field takes a colour from anywhere on your screen, not just from inside the app window. Where the underlying browser engine does not support it, the button is clearly disabled rather than quietly doing nothing.

Looking for what shipped on this site?

Stream Composer Suite is its own thing, with its own version history. What changed on thenerdybox.com itself is a separate list.

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