CTV

Thumbnail Generator

Overlay assets
Guides Preview controls:
  • Center Anchor: centres the selected anchor/host image in the canvas.
  • Center Pan: resets the current background pan position to the middle without changing zoom.
  • Fit Anchor Width: scales the selected anchor/host image so the cropped width fits the canvas width.
  • Fit Anchor Height: scales the selected anchor/host image so the cropped height fits the canvas height.
  • Guides: toggles visual centre/rule-of-thirds guides. Guides do not export.
  • Current PNG: exports only the selected slide.
  • Download All PNGs: exports every background slide using each slide’s individual settings.

Pan: drag canvas (Space to force). Zoom (BG): slider or Alt/Option + wheel. Scale (anchor): wheel over anchor (no Alt). Drop files here (Alt = Anchor).

Backgrounds

Choose files or drop images here
100%
Allow blank areas
0 / 0

Anchor & Overlays

Choose one or more files, or drop anchor images here
Choose which anchor image applies to this slide.
    100%
    0°

    Wheel over anchor (no Alt) scales anchor • Rotate with slider. Drop a file while holding Alt to set it as Anchor.

    Example feature-story comp using an anchor host image and an additional overlay Use Additional Overlays for feature or special-segment comp images, with the anchor image acting as the host of the segment.
    Choose PNG overlays or drop them here
      Overlays are remembered automatically in this browser.

      Filename Template

      Filename template:
      • {index2}: two-digit slide number, such as 01, 02, 03.
      • {sourceBase}: original background filename without the file extension.
      • {date}: today’s date in YYYY-MM-DD format.
      • {show}: optional show slug from the Show slug field.
      Example: {index2}-{sourceBase}_YTThumb.png could export as 01-story-image_YTThumb.png.
      Tokens: {index2}, {sourceBase}, {date}, {show}
      📝 Patch Notes / Recent Updates
      Changes made: April 29, 2026 Last patch issued: April 29, 2026

      Summary: Recent workflow, overlay, anchor, gallery, export, help, and visual updates added to the Thumbnail Generator.

      Background Uploads & Gallery

      • Background uploads add to the existing gallery instead of replacing it.
      • The Backgrounds upload area supports drag-and-drop.
      • The filmstrip auto-scrolls to the active background image.
      • Slides with Anchor Comp enabled display an Anchor marker in the gallery.

      Preview & Contextual Help

      • The outdated top Help button and Keyboard Shortcuts popover were removed.
      • The visible Preview heading was removed to reduce clutter.
      • The preview toolbar help was consolidated into a single ? hover panel explaining Center Anchor, Center Pan, Fit Anchor Width, Fit Anchor Height, Guides, Current PNG, and Download All PNGs.
      • Filename Template now has a ? hover panel explaining {index2}, {sourceBase}, {date}, and {show}.
      • Additional contextual help images were added for feature/special-segment comps, Full Show, Deinterlace, gallery previews, and Anchor Comp usage.

      Anchor Image Workflow

      • Added ⭐ Set as Anchor for moving a selected gallery image into the anchor/featured image slot.
      • Anchor images are automatically centred and made cropper-ready.
      • Anchor Comp can be enabled per slide so batch exports can mix regular slides and anchor comp slides.
      • Deinterlace applies to both background images and anchor images.

      Additional Overlays

      • Additional Overlays have their own upload/drop area.
      • Additional Overlays appear in a list with on/off toggles.
      • Additional Overlays include small preview thumbnails.
      • Additional Overlays default to off when first loaded or newly uploaded.
      • Uploaded overlay visibility is remembered in the browser once changed/saved.
      • Built-in Additional Overlays load from additional custom overlays/manifest.json.
      • The Additional Overlays section includes a hover help example for feature/special-segment comp usage.

      Overlay Asset Status

      • Added an Overlay Asset Status panel listing referenced overlay files and whether they are available or missing.
      • The compact top-bar overlay status remains for quick readiness checks.

      Dark Mode

      • Added a Dark Mode toggle in the top app bar.
      • Dark Mode is visual only and does not affect exported PNGs.
      • The Dark Mode preference is remembered in the browser.

      Canvas & Export Improvements

      • Background images can be moved more freely beyond the canvas bounds.
      • Duplicate slides clone image resources safely so deleting one duplicate does not break another.
      • Main preview and exports preserve the intended layer order, including the CTV/template overlay.

      Deployment Notes

      • Expected overlay folder: additional custom overlays/
      • Expected reference example folder: reference files/
      • Expected reference files include TEEUP.jpg, full-show.png, deinterlace-example.png, gallery-preview-example.png, and anchor-comp-example.png.