Frequently asked questions

FILES Converter, Viewer and Editor is a free, all-in-one online platform to view, edit and convert any file extension. We support 1773+ formats across 26 categories.

No. Everything runs in your web browser. There is nothing to download or install, on desktop or mobile.

Yes — every viewer, editor and converter is 100% free with no sign-up, no watermarks and no hidden limits.

Wherever possible, our tools process files entirely on your device using browser APIs. When a server-side step is genuinely needed for conversion, files are processed and deleted shortly afterwards.

No. We do not keep your files after a conversion completes.

We use a single localStorage entry to remember your light/dark theme preference. See our privacy policy for details.

Images (PNG, JPG, GIF, WebP, SVG, BMP…), PDFs, audio (MP3, WAV, OGG…), video (MP4, WebM…) and any text-based file. Browse the viewer page for the full list.

Yes. The viewer toolbar offers zoom in/out, a percentage readout and a fullscreen button.

Yes — file name, size, type, last-modified date and (for images) dimensions are shown beneath the preview.

Any plain-text format: code (HTML, CSS, JS, PHP, Python…), data (JSON, XML, CSV, YAML), config (INI, TOML, ENV) and documents (TXT, MD, LOG).

The editor uses a monospaced code font with line numbers and language-aware formatting. Full syntax highlighting is on our roadmap.

Yes. Use the undo/redo buttons, then click Save or Export to download your file.

Hundreds of pairs. Popular ones include PDF↔DOCX, JPG↔PNG, MP4→MP3, CSV↔XLSX, WebP→PNG and SVG→JPG. Use the converter hub to pick any source and target.

Most conversions complete in seconds. Larger files naturally take longer.

For lossless format pairs there is no quality loss. For lossy targets (e.g. JPG, MP3) some compression is applied — adjust quality where available.

Any modern, up-to-date browser: Chrome, Firefox, Safari, Edge. Mobile browsers work too.

Not currently. If you need one, please contact us.

The pages themselves need to load once, but file processing happens locally, so viewing/editing works without a network after that.