HTML Studio is a free HTML viewer, HTML editor and code editor for Android – with live preview, a built-in browser, an on-device AI assistant that finds and fixes errors, and viewers for Markdown, JSON, PDF and Word files. No account, no paywall, all features included.
Open any HTML file from your phone, email or downloads, see it rendered instantly, view the source with syntax highlighting, edit it, and preview the result as you type. Whether you want to learn HTML, test a web page offline, check a saved page, or write a complete website on your phone, HTML Studio has the tools.
★ HTML VIEWER
• Open .html, .htm, .xhtml and .mhtml files from any app, file manager or download
• View, Edit and Preview tabs – switch in one tap
• Syntax-highlighted source view with line numbers
• Full-screen preview, open in the built-in browser or any other browser
• Print to PDF and share
★ HTML EDITOR & CODE EDITOR (HTML, CSS, JavaScript)
• VS Code-style autocomplete for tags, attributes, CSS properties and values
• Snippets, auto-close tags, auto-indent, bracket matching
• Live preview: drag the split to make the code or the preview bigger
• Symbol keyboard row for < > / = " ' { } and Tab
• Find & replace, format (beautify) code, comment/uncomment, undo/redo
• Light and dark themes
★ ERROR CHECKER WITH ONE-TAP FIXES
• Finds misspelled tags (), attributes (clas=), values (rel="styleshedet"), missing closing tags, CSS mistakes and JavaScript errors
• Green ⚡ Fix buttons repair most problems instantly – no AI needed
• Fix all: repairs everything it can, then the AI checks the rest
★ FREE AI ASSISTANT – RUNS ON YOUR PHONE, WORKS OFFLINE
• Pick a model for your phone: Gemma 4 (best quality) or small Qwen models for lighter phones
• Fix errors, explain code, improve a page, make it responsive, add comments, or create a whole page from a description
• Only the lines with problems are changed – your design stays the same, with Before/After preview and Undo
• Your code never leaves your device. Model downloads once, then no internet is needed
★ PROJECTS & FILE MANAGER
• Real projects with folders: HTML, CSS, JS, images and more
• Templates: blank, starter, landing page, Markdown
• Import and export projects as ZIP
• JavaScript console: see errors from your page and fix them with a tap
★ CODE BROWSER
• Browse any website, view page source, inspect elements, styles and console
• Full-screen mode, downloads, open http and localhost / dev-server addresses
★ MARKDOWN, JSON, PDF & WORD VIEWER
• Markdown (.md) rendered with tables, code blocks and checklists
• JSON, XML, CSS, JS, TXT and 60+ code file types with syntax highlighting
• PDF viewer and PDF tools: merge, split, images to PDF, sign, Word (.docx) to PDF
• Open Word documents and convert them to HTML or PDF
★ MORE
• QR code / link scanner to open pages instantly
• Home screen widget and Quick Settings tile
• Works offline – no sign-in, no account
Perfect for students learning HTML and CSS, web developers checking code on the go, bloggers editing HTML snippets, and anyone who needs to open an HTML file on Android.
HTML Studio is free and supported by ads. There are no in-app purchases: every feature is included.
Privacy: your files, code and AI prompts stay on your device. Privacy policy: https://dinaropinions.com/html-studio-privacy-policy/
HTML viewer & code editor: live preview, AI code fixer, browser, Markdown, PDF