The File Viewer family

View any file, right in your browser

A privacy-first family of fast, single-file viewers. Drag & drop a file and read it instantly — no build, no uploads, no accounts. Everything runs locally in your browser.

Single-file & offline Files never leave your device Open source MIT licensed

Data Viewer

data-web-viewer

Explore JSON, YAML, CSV, TSV & XML as a collapsible tree or table, with a highlighted source view.

jsonyamlcsvxmldata-viewertree-viewsingle-fileofflineprivacy

DOCX Viewer

docx-web-viewer

View Word documents in your browser — formatting, tables & images intact. Nothing uploaded.

docxworddocument-viewerdocx-previewofficesingle-fileofflineprivacy

EPUB Viewer

epub-web-viewer

Read EPUB books in your browser — chapters + contents. Your books never leave your device.

epubepub-readerebookreadersingle-fileofflineprivacy

File Viewer

file-web-viewer

Fast, single-file, offline viewers for HTML, Markdown, ePUB, PDF, data, Word & spreadsheets.

file-viewerviewerssingle-fileofflineprivacy

HTML Viewer

html-web-viewer

Render HTML in a sandboxed frame, or read CSS/SCSS/JS/TS source with syntax highlighting — offline, nothing uploaded.

html-viewerhtmlcssjavascriptsyntax-highlightingsingle-fileofflineprivacy

Markdown Viewer

markdown-web-viewer

Drag & drop a Markdown or text file to render it instantly — offline, nothing uploaded.

markdownmarkdown-viewertxtsingle-fileofflineprivacy

PDF Viewer

pdf-web-viewer

Read PDFs in your browser with pdf.js — offline, nothing uploaded.

pdfpdf-viewerpdfjssingle-fileofflineprivacy

Sheets Viewer

sheets-web-viewer

Open spreadsheets (.xlsx, .xls, .ods & more) as tables with sheet tabs — offline, nothing uploaded.

xlsxexcelspreadsheetsheets-viewerodssheetjssingle-fileofflineprivacy