FileFlip — Free Online File Editor, Viewer & Converter
FileFlip is a high-performance, offline-capable web tool for editing, previewing, and exporting various file formats. Edit Markdown, JSON, YAML, XML, HTML, CSV, and plain text files directly in your browser — no sign-up, no installation, completely free.
Key Features
- Offline-first — all editing, previewing, and export happens locally in your browser
- Live preview — see rendered output as you type, including Markdown, HTML, and more
- Syntax highlighting — code editor with line numbers, bracket matching, and auto-complete
- PDF export — professional GitHub-styled PDF export for documents
- Drag and drop — import files by dragging them into the editor
- Open from URL — view files from any public URL
- Multiple file formats — Markdown, JSON, YAML, XML, HTML, CSV, TXT, and LOG files
Supported File Formats
- Markdown (.md) — rich text editing with GitHub Flavored Markdown support
- JSON (.json) — interactive tree view with collapsible nodes
- YAML (.yaml, .yml) — structured data editing and tree view
- XML (.xml) — syntax-highlighted editing with tree view
- HTML (.html) — live rendered preview in an isolated sandbox
- CSV (.csv) — tabular data displayed in formatted tables
- Plain Text (.txt, .log) — simple text editing with line numbers
Why Choose FileFlip?
Unlike other online editors, FileFlip works entirely offline. Your files never leave your device — all processing happens locally in your browser using modern web APIs. FileFlip is open source and available on GitHub. It also has an Android app for editing files on mobile.