Upload one piece of art and generate every Steam store, library, and community asset size -- right here in your browser.
No upload. No signup. No tracking of your files -- your art never leaves your machine.
Sizes verified 2026-08-10 against Steam's official partner documentation. Full reference table below.
PNG, JPG, or WebP. The larger the source, the better -- 4K works fine and stays responsive.
Already have an exported asset? Check it against Steam's exact required dimensions before you upload it to Steamworks.
We only read its pixel dimensions -- nothing is uploaded anywhere.
Read more: Steam Capsule Sizes 2026: Every Asset Dimension
Every Steam store and library asset size, verified 2026-08-10 directly against Steam's partner documentation (partner.steamgames.com/doc/store/assets, /assets/standard, /assets/libraryassets, and /assets/community). No file-size (KB/MB) limit is documented anywhere in Steam's official pages for any of these assets, so none is shown here -- we don't invent numbers Steam hasn't published.
| Asset | Dimensions | Format | Notes |
|---|---|---|---|
| Header Capsule | 920 x 430 | -- | Store page top, recommendations, Big Picture |
| Small Capsule | 462 x 174 | -- | Auto-generates 184x69 and 120x45 variants; logo must stay legible at 120x45 |
| Main Capsule | 1232 x 706 | -- | Homepage carousel, wishlist emails |
| Vertical Capsule | 748 x 896 | -- | Seasonal sale pages and front page during sales |
| Library Capsule | 600 x 900 | PNG | Primary library presentation; auto half-size 300x450 |
| Library Header | 920 x 430 | PNG | Steam Client Library view -- a distinct upload slot from Header Capsule despite the same size |
| Library Hero | 3840 x 1240 | PNG | Auto half-size 1920x620. Safe area 860x380 centered -- no text outside that zone |
| Library Logo | 1280 wide OR 720 tall (flexible aspect, not both) | PNG, transparent | Logotype only, layered over the Library Hero |
| Page Background | 1438 x 810 | -- | Optional -- auto-generated from your last screenshot if not supplied |
| Screenshots | Min 1920x1080 (16:9); up to 3840x2160 recommended | JPG/PNG typical | Minimum 5 required; must show actual gameplay |
| Community / App Icon | 184 x 184 | JPG | Library list view, chat favorites, notifications |
| Shortcut / Client Icon | 256 x 256 (also accepts 512x512) | ICO/PNG (Mac: ICNS) | Desktop shortcut icon |
| Achievement Icon (achieved)unconfirmed | 256x256 recommended (displays at 64x64) | unconfirmed | Field confirmed in official docs; exact px corroborated by secondary sources only, not found verbatim in the fetched doc text |
| Achievement Icon (unachieved/gray)unconfirmed | Same slot, assumed 256x256 | unconfirmed | Separate field confirmed in official docs; dimension assumed by parity with the achieved icon, not independently confirmed |
Start with your highest-resolution source artwork -- ideally 4K or larger, since the biggest Steam asset (the Library Hero) needs 3840x1240 pixels. Drop that image into the upload area above; everything happens on your own device using the HTML canvas element, so nothing is sent anywhere.
Once your image loads, every Steam asset size appears as its own live preview card. For assets that need cropping, toggle between Fill (crop to completely cover the target, dragging the preview to move the focal point) and Fit (show the whole image, letterboxed if the aspect ratio doesn't match). Adjust each card independently -- your logo capsule might need a different focal point than your vertical capsule.
When a card looks right, click its PNG or JPG button to download that exact size immediately. There's no zip file and no batch export -- each asset downloads individually, so you always know exactly what you're getting.
No. The resizer runs entirely in your browser using the HTML canvas element. Your source image is never sent to a server -- it never leaves your machine.
Start as large as possible -- ideally 4K (3840x2160) or larger -- so there is enough resolution for the biggest target, the 3840x1240 Library Hero, without upscaling. The tool will warn you if your source is smaller than a given target.
Fill (cover) crops your image to completely fill the target dimensions -- drag the preview to move the focal point and control what stays visible. Fit (contain) shows your whole image with no cropping, adding empty space around it if the aspect ratio does not match.
Steam's official documentation confirms the achievement icon upload fields exist, but the fetched page text did not state their exact pixel dimensions. 256x256 is the size corroborated by community and secondary sources, so it is included but flagged rather than presented as officially verified.
Not directly. Browsers can only export canvas images as PNG or JPG. Download the 256x256 PNG from the Shortcut/Client Icon card and convert it to .ico with a separate icon-conversion tool.