Visual Screenshot Editor
Full canvas editor with text, shapes, and images. Drag, resize, and layer elements on a pixel-perfect 1280×800 or 640×400 canvas.
Free tool for Chrome extension developers
Stop wasting hours on store assets
Publishing a Chrome extension? The Web Store needs screenshots at exact dimensions, icons at 4 sizes, and 3 promo image formats. CWS Kit generates all of them in minutes — so you can get back to building.
Runs locally in your browserNo signup requiredFree forever
1280 × 800
128 × 128
1400 × 560
cwskit.khanakia.com/app
Screenshots
1280×800 or 640×400
Icons
16 · 32 · 48 · 128
Promos
Small · Large · Marquee
ZIP Export
All assets, organized
The problem
Publishing shouldn't take longer than building
Without CWS Kit
30 minGoogle every image dimension the store requires
45 minOpen Figma/Photoshop, create canvases at each size
20 minResize your icon to 16, 32, 48, and 128px manually
60 minDesign 5 screenshots with captions and backgrounds
30 minCreate 3 promotional images at different dimensions
15 minExport, rename, and organize all files for upload
Total time~3+ hours
And you still might get rejected for wrong dimensions
With CWS Kit
0 secEvery dimension is pre-configured — nothing to look up
10 secUpload one icon, all 4 sizes generated instantly
10 minDesign screenshots in the visual editor at exact CWS sizes
5 minCreate promo images using the same editor
5 secOne-click ZIP export, organized and ready to upload
Total time~15 minutes
Every asset is pixel-perfect for the Chrome Web Store
That's 12x faster — and you never have to check a dimension spreadsheet again.
Features
Everything you need to ship your extension listing
Stop juggling Figma, Photoshop, and spreadsheets of dimension requirements. One tool, every asset.
One-Click Icon Generation
Upload a single source icon. Instantly generate all four Chrome Web Store sizes: 16×16, 32×32, 48×48, and 128×128 pixels.
Promo Image Creator
Design Small Tile (440×280), Large Tile (920×680), and Marquee (1400×560) promotional images with the same visual editor.
ZIP Export
Download every asset — screenshots, icons, and promos — in a single organized ZIP file, ready to upload to the Chrome Web Store.
Privacy First
No server uploads. No accounts. All data stays in your browser's local storage. Your images never leave your machine.
Multi-Project Support
Managing assets for multiple extensions? Create separate projects with their own icons, screenshots, and promo images, all in one workspace.
Quick Reference
Chrome Web Store Image Sizes — 2026
Every dimension the Chrome Web Store requires for your extension listing.
1280×800
Screenshot
PNG or JPEG · Up to 5
640×400
Screenshot (Small)
PNG or JPEG · Up to 5
128×128
Store Icon
PNG only · Required
48×48
Management Icon
PNG only · Required
32×32
Windows Icon
PNG only
16×16
Toolbar Icon
PNG only
440×280
Small Promo Tile
PNG or JPEG · Optional
920×680
Large Promo Tile
PNG or JPEG · Optional
1400×560
Marquee Promo
PNG or JPEG · Optional
How It Works
Three steps to a polished listing
No installs, no config, no learning curve. Just open and create.
01
Create a project
Name your extension and start a project. Each project holds all the assets for one Chrome extension — screenshots, icons, and promo images.
02
Design your assets
Use the visual canvas editor to build screenshots. Upload a source icon and auto-generate all four sizes. Create promo images in every required format.
03
Export & publish
Download a ZIP with everything organized by type. Upload directly to the Chrome Web Store developer dashboard. Done.
FAQ
Common questions
What size are Chrome Web Store screenshots?
Chrome Web Store screenshots must be 1280×800 or 640×400 pixels in PNG or JPEG format. You can upload up to 5 screenshots per language for your extension listing.
What icon sizes does a Chrome extension need?
Chrome extensions need icons at 16×16 (toolbar), 32×32 (Windows), 48×48 (extensions page), and 128×128 pixels (Web Store and installation). All should be PNG format.
What are the promotional image sizes?
Chrome Web Store supports three promotional formats: Small Tile (440×280), Large Tile (920×680), and Marquee (1400×560). They're optional but increase your chances of being featured.
Is CWS Kit really free?
Yes, completely free with no limits. CWS Kit runs entirely in your browser — there's no server cost to pass along. Your data is stored locally in your browser between sessions.
Do I need to create an account?
No. CWS Kit requires no signup, no email, no login. Open the app and start creating. Your projects persist in your browser's local storage between sessions.
Can I use this for Firefox or Edge add-ons?
CWS Kit is optimized for Chrome Web Store dimensions, but many sizes overlap with Firefox Add-ons and Edge Add-ons.
Ready?
Ship a polished Chrome Web Store listing in minutes
Free, private, and runs in your browser. No reason not to try.
Open CWS Kit