Chart position — tracked daily by LaunchShots
Screenshot style breakdown
Sampled from 3 of HTMLオープナー's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#1C1C1C bg
#3B3B3B
#949CEC accent
#FFFFFF text
Reading the caption text from the screenshots in your browser…
Screenshots
iPad screenshots
Icon palette
About this app
AIが数秒で書いてくれたHTML/CSS/JavaScriptのコード、その場で今すぐ動かして試したいと思ったことはありませんか？ 「HTMLオープナー」は、AIチャットが生成したWebコード・ゲーム・ツール・ダッシュボードを、PCを使わずiPhone上で本物のブラウザ(WebKit)として即座に実行する専用ランナーアプリです。 ■ こんな悩みを解決します ・iPhone標準の「ファイル」アプリでHTMLを開いても、ボタンもアニメーションもJavaScriptも動かない ・SafariのURL欄にはローカルファイルを直接開く機能がない ・「index.htmlの隣にstyle.cssや画像フォルダがある」構成だと、コピペしただけではデザインが崩れる ・確認のためだけにPCを開いてローカルサーバーを立てるのは面倒 ■ 本物のブラウザ描画(WebKit) iOS標準のWKWebViewエンジンをフル活用。Tailwind CSS、Three.js、Canvasアニメーション、最新のJavaScriptまでネイティブ同等に描画します。 ■ フォルダ丸ごと読み込み 単一のHTMLファイルだけでなく、style.cssやapp.js、画像フォルダを含むプロジェクトフォルダをま…
App details
What you can learn from HTMLオープナー
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 5 screenshots above are HTMLオープナー's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: HTMLオープナー runs a mixed light-and-dark set where the background shifts from screenshot to screenshot (first shot #1C1C1C) — each image has to stand on its own, so the captions carry more of the story. The accent colour we picked up, #949CEC, is the one to reuse for badges, arrows and highlighted words if you borrow this look. Hit Use this style to open the editor with these exact colours and drop your own screenshot in.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
Take what works into your own screenshots
Open LaunchShots and design your App Store & Google Play screenshots — pick a device frame, drop captions, ship in minutes. Free, in your browser.
Open the screenshot editor →Apps with a similar look
Closest background + accent colours among the listings we've analysed — useful when you want to see the same palette handled by a different team.