Eight styles, any platform size, one Shuffle button. Download one, or a pack of twelve.
Most "background packs" are a folder of someone else's JPEGs with a licence you have to read. These are drawn on your device from a seed, so every one is unique, none of them are uploaded, and any of them can be reopened from a link. Send the result straight to the editor and put your text on top.
Style
Size
Colours
Intensity
Pack
A downloaded background pack has three problems that never show up until they cost you something. The images are shared with everyone else who found the same pack, so your thumbnails start to look like theirs. The licence is whatever the pack's author says it is, and "free" on a download page is not the same as free to use on a monetised channel. And the file is the size the author chose, so the first thing you do is crop it and lose the composition.
The background here is drawn on your device from a random seed. Every result is unique, because the seed is one of about four billion and the odds of another creator landing on yours at the same size, palette and style are effectively zero. Nothing is uploaded, because there is no server in the loop; the badge under the headline counts the bytes leaving this page while you work, and the number it shows is measured, not promised. And the output is drawn at the exact pixel size you pick, so a 1280 × 720 YouTube thumbnail background has its focal point where the thumbnail needs it, not where a crop happened to land.
| Style | What it draws | Use it when |
|---|---|---|
| Glow | One soft spotlight on a dark base, with a vignette | You have a cut-out subject and want it to pop. The default for a face-and-text thumbnail. |
| Mesh | Several colour blobs blended into a gradient field | You want colour without a hard focal point. Good behind large text. |
| Burst | Rays from a point, alternating two colours | Energy, reveals, "vs" thumbnails, anything that should feel loud. |
| Grain | A diagonal gradient under film grain | Cinematic, documentary or vlog framing where a clean gradient looks too corporate. |
| Stripes | Diagonal bands in two colours plus the base | Sports, retro and gaming layouts, and anywhere you want motion in a still. |
| Bokeh | Soft out-of-focus discs on a dark field | Night, music and lifestyle framing. Reads as a photograph at feed size. |
| Waves | Layered curves rising from the bottom edge | Tech, finance and explainer channels. Leaves the top third clear for a title. |
| Duo | A hard two-colour split with a shadow along the seam | Comparisons, before-and-after, "this or that". Put one subject on each side. |
Every background you see is fully described by nine numbers: the style, the seed, the width and height, the intensity, and four colours. The page writes those into the address bar after the #, in the part of a URL a browser never sends to any server. Copy link gives you that address. Open it on another device, or next month, and the same background is drawn again, pixel for pixel. Paste it into a note beside your video project and you can regenerate the background at any size later, which is the one thing a downloaded JPEG can never do.
A pack is the current style, size, palette and intensity, drawn with a run of consecutive seeds. Twelve is the default; six and twenty-four are offered. Every file in the ZIP is named with its seed, and a pack.txt manifest lists the reopen link for each one, so a pack is not a dead folder of images but a set you can come back to and re-render at a different size. Packs render one file at a time on your device and the status line counts them down; at 4K a pack of twelve takes a few seconds on a laptop and longer on a phone, and the page tells you how long each render actually took rather than guessing.
The four swatches are the palette. Base is the dark ground, Accent carries most of the colour, Second is the counterpoint, Light is used for highlights. Click any swatch and type or pick your brand's hex code. Random palette generates a new harmony from a random hue using analogous, complementary, triadic and split schemes. Darker pulls the base further down when the result is too bright for white text, which is the most common fix a thumbnail background needs. If you already have a colour you like from a photo, the palette extractor will give you its hex codes to paste in here.
Choose the platform preset so the background is drawn at the exact pixel size, then pick one of the eight styles. Nothing is uploaded at any point.
Shuffle redraws from a new seed and keeps your palette. Remix changes the colours as well. Type your brand hex codes into the swatches to match your channel.
Save a PNG or JPG, download a pack of twelve as a ZIP, or open it in the editor to add your title and cut-out. Copy link keeps the seed so you can regenerate it later.
Keep going without re-uploading — your image carries over to the next tool automatically.