24 stars · MIT · v4.0.0 (2026-05-14) · Track this in Scout
Tiny template-based desktop thumbnail composer — 1280x720 grids, signed Mac build, opens and closes in two minutes.
▶Repo detailsthe review · specs · pros & cons
What it is
A small desktop application that composes 1280×720 YouTube thumbnails from a grid of one to six images with text laid over them. Version 4, from May 2026, added a properly signed macOS build.
What it is good for. This is the cheapest item on the page and it touches the most important number on a YouTube channel. Thumbnail click-through decides whether YouTube shows a video to anyone who is not already subscribed — it outranks the title, the description and the tags combined. When every thumbnail is bespoke work in a screenshot editor, one per video is what gets made instead of three. A template-driven composer makes the second and third variant nearly free, and that is the whole game: not a better thumbnail, but the habit of making three and keeping the one that earns clicks. Satori from Edition 1 is the programmatic version of this for when you want a hundred; this is the version you open on a Tuesday afternoon. Do not let the star count settle it — a 24-star local image tool carries almost none of the risk a 24-star server would.
- Opens, does one job, closes. No install ceremony, no account, no subscription
- MIT, and v4.0.0 shipped in May 2026 with a signed Mac build — this is maintained, not abandoned
- Template-driven, so an English and a Russian variant of the same thumbnail take a minute each
- Twenty-four stars and one maintainer. If he stops, it stops — plan on it being a tool you use, not one you depend on
- Grid layouts only. It is not a design tool and will not replace a full design application for anything elaborate
- Electron, so the download is heavier than a 24-star utility sounds like it should be
Right now every thumbnail you make is bespoke work in SnagIt, which is exactly why you make one per video instead of three.
