作りはじめる

Playcode Classic

HTML Runner

This HTML code runner turns your code into a web page in your browser, on a phone or a computer. Paste your HTML, CSS and JavaScript and the page appears, changing as you type. No app to install. Sign in to save it and share a link. It’s part of Playcode Classic, Playcode’s free code tools.

Run your HTML

Free. No account needed to start.

On a level playground seesaw a student with his phone balances an old desktop computer showing the same little web page, and Play stands on the pivot with his arms out like a pair of scales.

How to run HTML code on your phone

  1. Open this page in your phone’s browser and tap Run your HTML.
  2. Open index.html from the files and paste your code.
  3. Switch to the page to see it. Change a line and it changes.

On a phone the editor shows one panel at a time - the AI chat, your code, the page or the console - and opens on the chat.

Three phones stand on a playground bench: code, the same code with a row of tabs, and the finished page, and Play leans on the last one.

Paste it. See the page.

Got HTML from a lesson, a book or an AI chat? Paste it into index.html and the page appears: beside your code on a computer, one tap away on a phone. Change a line and the page changes with it.

No HTML yet? Build the whole website with AI
Play pastes a huge sheet onto a brick wall and it turns into a web page as it goes up, a bird flying out of its picture, while the student laughs over his phone on a bench.

What this HTML runner can do

HTML, CSS and JavaScriptIn one file, or in separate files linked from the page
Tailwind CSSReady in the starter page
Live previewThe page changes as you type
PhoneYes, in your phone’s browser: code, page and console one at a time
Full screenOpen the page in its own tab
A file you already havePaste its code into index.html, or sign in and upload it
ImagesSign in to upload them, or link to images online
ShareSign in, save, turn the link on and send it
PublishOn a Playcode address with Playcode branding, free; a custom domain on a paid plan
DownloadThe whole project as a ZIP, on a paid plan
PHP and other server codeNo: the runner shows pages, it doesn’t run a server

See it full screen. Send someone the link.

Full screen.
Open the page in its own tab and see it the way a visitor will.
A link.
Sign in, save the project, turn its link on in the Share tab and send it. They open your page and your code.
At an evening film night in the playground the student and a friend watch his web page projected on a sheet between two trees, and Play runs the projector.

Want it changed? Ask the AI.

Tell the editor’s AI chat what you want, a bigger heading, a dark theme, a contact form, and it changes the code. It uses credits; eligible new accounts get trial credits.

In a tailor’s workshop Play pins and trims a paper web page worn by a mannequin while the student, phone in hand, describes what he wants.

Part of Playcode Classic

Playcode began in 2016 as a browser coding environment. This runner is one of its free code tools, which we now call Playcode Classic.

Playcode today is an AI platform for building and running websites and apps.

See the AI website builderAll Playcode Classic tools
Play stands at the open gate of an old playground and presents what lies beyond it: a rocket ready on its launch pad.

Questions people ask

  • How do I run HTML code on my phone?

    Open this page in your phone’s browser and tap Run your HTML. Open index.html from the files, paste your code, then switch to the page to see it. There’s no app to install.

  • Is this HTML runner free?

    Yes. Running your HTML is free and needs no account. Saving and sharing need a free account, which keeps up to three saved projects, public or private; downloads need a paid plan; the AI chat uses credits.

  • Is there an app?

    No app to install. The runner works in your phone’s browser, so you can run HTML code on mobile without an HTML code runner app.

  • Can I run an HTML file I already have?

    Yes, it works as an HTML file runner. Open the file, copy its code and paste it into index.html, or sign in and upload the file to your project.

  • Does it run CSS and JavaScript?

    Yes. Put them in the page or in their own files and link them, as on any website. The starter page has Tailwind CSS ready.

  • Can I see my page full screen?

    Yes. Open the page in its own tab to see it the way a visitor will.

  • Can I add images?

    Yes. Sign in and upload them to your project, or link to images that are online. A free account uploads up to 4 MB in all; a paid plan takes 128 MB a file and 1 GB in all.

  • Can I download my page?

    On a paid plan you can download the whole project as a ZIP. On any plan you can copy the code, or publish the page and share its link.

  • Can it run PHP?

    No. The runner shows web pages: HTML, CSS and JavaScript. It doesn’t run server code such as PHP.

  • Is this runner part of Playcode?

    Yes. This runner is part of Playcode Classic, Playcode’s free code tools. Playcode began in 2016 as a browser coding environment. Today it is an AI platform for building and running websites and apps.

More free code tools

Got some HTML? Run it.

Run your HTML
ドアが開いたまま空席のあるロケットが待っていて、Playがあなたを招き入れています。はるか上空では、別のロケットが遠ざかっていきます。