Chrome Web Store Listing Assets: Icon, Screenshot and Promo Tile Sizes
A Chrome Web Store listing needs a 128 x 128 pixel icon and at least one screenshot, at 1280 x 800 or 640 x 400 pixels, with up to five allowed. A 440 x 280 small promo tile, a 1400 x 560 marquee tile and a YouTube link are optional. The summary line is capped at 132 characters. These figures come from Google’s developer pages, read on 13 November 2026; confirm them in the dashboard before you upload.
Where do these figures come from?
Everything below was read on 13 November 2026 from three pages on Chrome for Developers: Supplying Images, Complete your listing information and Creating a compelling listing page. Each page prints a revision date at the bottom: the images page says 2018-06-11, the listing page 2020-12-07 and the best-practice page 2024-08-02. Old dates are not a reason to distrust a spec that has not changed, but they are a reason to open the dashboard and look at the upload fields before you spend an evening exporting files.
If a number here disagrees with what the Developer Dashboard asks for, the dashboard wins. Tell us so we can fix the page. This page states only what Google’s documents say; it does not state what the review team will accept in practice.
Which images does the store ask for?
| Asset | Size and format | Required? | Notes from the docs |
|---|---|---|---|
| Store icon | 128 x 128 px, PNG, packed in the extension ZIP | Yes | Artwork 96 x 96 with 16 px of transparent padding on every side; must look right on light and dark backgrounds |
| Screenshot | 1280 x 800 or 640 x 400 px | At least 1, up to 5 | Square corners, full bleed, no padding; the docs say 1280 x 800 is preferable and that all screenshots are currently downscaled to 640 x 400 |
| Small promo tile | 440 x 280 px, PNG or JPEG | Optional | Shown on the home page, category pages and search results; extensions without one are listed after those that have one |
| Marquee promo tile | 1400 x 560 px, PNG or JPEG | Optional | Needed to be considered for the rotating carousel at the top of the store home page |
| Promo video | A link to a YouTube video | Optional | Shown ahead of the global screenshots; can be localized |
Only the icon and one screenshot are mandatory, but the images page is blunt about the trade: an extension without a marquee image cannot be featured in the marquee, and one without a small tile is shown after the ones that have it. A new extension with no reviews has little else to compete with, so the optional tiles are worth an afternoon.
What text does the listing ask for?
The summary is the line people see on the home page, category pages and in search results, and Google caps it at 132 characters of plain text, with no HTML. It comes from the description field of your manifest, so the limit applies to the file you ship, not only to a form. The description field in the dashboard is longer-form: Google suggests an overview paragraph followed by a short list of main features, starting with a plain statement of what the item does.
- Title: should describe the core function, stay short and be unlike existing extensions. Google says not to stuff it with keywords.
- Summary: 132 characters or fewer. Avoid “best extension ever”, superlatives such as “fastest”, and references to competing extensions.
- Description: the longer text under the screenshots. The docs warn that repetitive or irrelevant keywords can lead to suspension under the keyword spam policy.
- Category and language: a primary category, and the item’s language so people can find it in their own.
- Homepage URL and support URL: optional, but Google says they help build trust, and the dashboard also has a built-in support hub.
- Official URL: a verified-site pull-down. It lists only sites you have verified in Google Search Console, and choosing one shows a linked official URL under your title.
How should the promo tiles be designed?
The docs give a short list of rules of thumb for the two tiles, and they are practical enough to design from. Avoid text; make sure the image still works at half size; assume it will sit on a light gray background; use saturated colours and avoid large areas of white or light gray; fill the whole region; keep edges well defined. Do not use a screenshot as the tile, because the tile is meant to carry the brand. The best-practice page adds one more: no claims that misstate your standing, such as “Editor’s Choice” or “Number One”.
Promo images are not locale-specific today, according to the images page, so a tile with English words on it will show to every language. If your extension supports several languages, choose a text-free graphic. Newly uploaded promo images show a Pending Review status; the docs say they should be reviewed within a week, and a rejected one lists its reasons on the item’s edit page.
What makes a screenshot acceptable?
Google wants screenshots that show the real experience of the latest version, with the core features in view. The listing page says blurry, distorted or pixelated images, and images uploaded sideways, are out. Keep text light; too much of it overwhelms a downscaled thumbnail. Brand colours and logo treatment should match your icon and tiles so a visitor links them at once. Choose 640 x 400 only if 1280 x 800 is wrong for your product, for example a low-resolution game or a screenshot that does not survive downscaling.
For a utility such as a tab manager or a page-clipping tool, one useful order is: the toolbar popup open on a busy page, the options screen, the result on a page. Our Chrome extension ideas show how a one-line job translates into screenshots, and the Chrome Web Store submission checklist covers the privacy fields that come after the images.
What should you do beyond the store listing?
A store listing is where installs happen, not where strangers find you. Finish the listing, then give the extension a public page elsewhere. Launch your product free on this board with a link to the store page, and use the launch metrics worth tracking to see which place actually sent installs. The full route for this product type is in the Chrome extension launch playbook, and the Chrome extensions where-to-launch guide lists the places that accept them.
If you are still choosing what to build, the developer tool ideas on the board include plenty of browser add-ons. Keep the exported files in a folder named for the store and the date. Every store you add later will want a slightly different size, and a master export saves you from screenshotting the product again. The logo and icon specs page compares icon sizes across stores for that reason.
Frequently asked questions
What size is the Chrome Web Store icon?
The store icon is a 128 x 128 pixel PNG inside your extension’s ZIP file. Google’s docs ask for 96 x 96 pixels of artwork with 16 transparent pixels on each side. The icon should work on both light and dark backgrounds, and an icon without an alpha channel is placed in a rounded frame.
How many screenshots can a Chrome extension listing have?
You must supply at least one and may supply up to five. Each should be 1280 x 800 or 640 x 400 pixels, with square corners and no padding. Google’s docs prefer 1280 x 800 and say that all screenshots are currently downscaled to 640 x 400 for display.
Do I need the promo tiles to publish?
No. Only the icon and one screenshot are required. The 440 x 280 small tile and the 1400 x 560 marquee tile are optional, though the docs say extensions without a small tile are listed after those with one, and the marquee is needed to be featured there.
How long can the summary be?
The summary is limited to 132 characters, as plain text with no formatting. It comes from the description field in your manifest and is the main text people see on the home page, category pages and in search results, so put the most important words first.
Written by Post your build ideas with AI assistance and edited for this site. Where a page names another product, the facts came from that product’s own pages on the date shown above; terms change, so check them before you rely on them. About the publisher.