Steam Capsule Resizer
Upload one image and get all five Steam capsule sizes -- header, small, main, vertical, and library -- each with its own crop you drag into place. Runs entirely in your browser; nothing is uploaded to a server.
Resize your capsule to every Steam size
Upload one image (PNG or JPG, up to 20MB) and get all five Steam capsule sizes, each with its own crop you can drag into place, ready to download. Runs entirely in your browser on a canvas -- nothing is uploaded to a server. It does not add detail beyond your source file: a source smaller than a target size is stretched to fit and will look soft.
Drop an image to resize
or click to browse
PNG or JPG, up to 20MB. Resized in your browser -- nothing is uploaded to a server.
Every capsule at the right pixel dimensions is the floor, not the bar. The analyzer reads your live capsule the way a shopper does -- whether it says what the game is at thumbnail size -- alongside the rest of your store page.
What Each Steam Capsule Size Is For
Header Capsule -- 920×430px
Top of the store page, recommendations, Big Picture
Small Capsule -- 462×174px
Search results, top sellers, and wishlists
Main Capsule -- 1232×706px
Front-page featured carousel and sale features
Vertical Capsule -- 748×896px
Seasonal sale pages and vertical promo layouts
Library Capsule -- 600×900px
Steam library grid view
These are the current Steamworks upload sizes (the 2x assets Valve asks for today). The full dimension table, including the older 1x sizes still found on some shipped games, is on the capsule size validator.
The 0.5-second rule
Players spend about half a second deciding whether to click on your capsule. In that time, they need to understand what kind of game this is, feel some spark of interest, and notice something that sets it apart. Getting the crop right on all five sizes only gets you a capsule that is technically correct -- check it still reads at a glance with the capsule design guide.
Related Tools & Guides
Steam Capsule Sizes & Validator
The full dimension table for all five capsules, plus a file-dimension check.
Steam Capsule Design Guide
What makes capsule images convert and how to design ones that stand out.
Steam Screenshot Dimension Checker
Check screenshot dimensions and aspect ratio against Steam's requirements.
Store Page Checklist
Pre-launch checklist covering capsules, screenshots, description, tags, and trailer.