HTML Reader Offline vs Viewport

Open HTML files and ZIP websites on iPhone and iPad — completely offline. No account, no tracking, no ads. HTML Reader Offline turns your device into a portable library for local web content. Save a tutorial, a documentation site, an exported notebook or any .html / .zip bundle, then read it anywhere: on a plane, on the subway, or somewhere with no signal at all. WHY IT'S DIFFERENT • Truly offline. Files live on your device. Nothing is uploaded and no connection is ever required. • Single files or whole sites. Import one .html page, or a ZIP bundle with its CSS, scripts and images intact. • A private space per document. Each document loads in its own isolated storage area, so two tutorials never overwrite each other's saved state or progress. • Fits every screen. The interface adapts to the actual display — compact on a phone, spacious on an iPad or a folding phone's inner screen. READING THAT GETS OUT OF THE WAY • Automatic table of contents built from the page headings — jump to any section in one tap. • Full-text search inside the page, with a match counter and one-tap navigation between hits. • Bookmarks for the passages you want to return to. • Highlights in five colours, each with an optional note; they stay anchored to the text through font changes and rotation. • Adjustable font size, light / dark / sepia themes, and a subtle progress bar. • Reopens exactly where you left off. A LIBRARY YOU CAN ACTUALLY MANAGE • Folders with drag-and-drop, so documents stay organised. • Library-wide search: look across every document at once and land straight on the matching paragraph. • Reading statistics: total time, today's time, your daily streak, and a 7-day chart. • Backup and restore: export the entire library — documents, progress, bookmarks, highlights and settings — into one ZIP file, and bring it back whenever you need it. SHARE WHAT YOU'RE READING • Send a document to anyone as a single .html file, or as a ZIP bundle they can open in any browser or re-import into the app. PRIVACY, PLAINLY No sign-up, no analytics, no advertising, no third-party trackers. The app never makes a network request for you, and your files never leave your device. Tip Jar (optional): Settings → Tip Jar offers a one-time, voluntary tip. It unlocks nothing — every feature in the app is free for everyone. Have a question or an idea? The support link below reaches me directly.

Your HTML documents deserve a proper reader. Viewport opens .html and .htm files from Files and iCloud Drive on iPhone and iPad. Read reports, reference pages, and interactive documents with their original inline styles and JavaScript. READ AND INTERACT • Open HTML using the file picker or the system’s Open In menu. • Keep interactive controls and responsive layouts in supported documents. • Hide the reading controls while scrolling and bring them back with a tap. • Search for text in the current document. KEEP USEFUL FILES CLOSE • Return to recently opened documents. • Keep a local reading copy of imported HTML. • Try the bundled interactive sample without an account. EXPORT AND SHARE • Create a PDF with the page as displayed. • Export an A4 PDF using the document’s print layout. • Share the original HTML through the system share sheet. Self-contained HTML works best. Separate companion files are not imported automatically. Documents that load remote resources need an internet connection for those resources. PDF exports are static and do not preserve interactive controls. No account, advertising, or analytics SDKs. The developer does not collect your documents or reading history through the app. HTML you open can contact external services defined by its content; those services have their own privacy practices.