HTML Viewer (013653) vs Gwtar Viewer

Every HTML file you generate with AI deserves a proper home — and a proper canvas. HTML Viewer is the studio built for the age of AI-generated code. Whether you're creating dashboards, prototypes, or data visualizations from any AI assistant or large language model, this app gives your HTML artifacts the full-fidelity rendering environment they deserve. IMPORT FROM FILES, INSTANTLY Bring in any HTML file straight from the Files app — iCloud Drive, local storage, or any connected provider. No copy-pasting, no workarounds. Tap, import, and render. ORGANIZED THE WAY YOU WORK Build a nested folder structure and manage all your HTML files in a collapsible file tree. When it's time to focus, one tap hides the entire sidebar and expands the canvas to fill your screen. TABS AND SPLIT VIEW Open multiple HTML files at once with a clean tabbed interface, or activate split view to compare two files side by side. Perfect for reviewing iterations, design variations, or before-and-after states across your projects. YOUR FILES, YOUR DEVICE Everything stays on your device. No uploads, no remote servers, no accounts required. Your files are stored privately on-device by default. HTML Viewer is the tool that was missing from every AI-assisted workflow. Download it today and give your artifacts a studio-grade home.

Gwtar Viewer opens Gwtar archives — self-extracting single-file HTML that packs a web page with all of its images and styles into one .html file. Gwtar files do not work when opened directly in a browser: they need a server that answers Range requests, fetching just the parts of the file that are actually needed. Gwtar Viewer runs a local server on your device to provide exactly that, letting the archive's own rendering logic do the rest. Your files are never modified. It also works as a viewer for ordinary HTML files, not just Gwtar. ■ Features - Open and read Gwtar files (.html) - Files you open are kept as history cards with thumbnails for quick reopening - Page zoom, remembered per file - Light / dark themes, English / Japanese UI - One-tap deletion of site data stored by archives ■ Privacy Everything happens on your device. The only network traffic is between the app and its own local server. Nothing is ever sent or collected externally. ■ Open source Gwtar Viewer is open-source software under the 0BSD license. See the support URL. The Gwtar format was designed by Gwern Branwen (this app is an independent implementation).