Free Online File Viewer — View Any File Format
Privacy-first file viewer. Every format renders locally, in your browser — no upload, no account, no waiting.
- 24 file formats
- No file size limit
- 100% client-side
- Works offline
Supports PDF, DOCX, XLSX, PPTX, Images, HEIC, CSV, JSON, XML, Markdown, HTML, Code, Archives (ZIP/TAR/GZ), Audio, Video, EPUB, RTF, PSD, Fonts, Email (EML/MSG), STL, STEP, DXF, DWG, and more — see all formats →
Supported formats
From PDFs to CAD drawings, view every format you work with daily — no plugins, no installs, everything directly in your browser.
Documents
PDFs, Word, PowerPoint, RTF, eBooks, and emails (EML/MSG) — everything you read, rendered instantly.
Media
Photos, HEIC, TIFF, PSD, audio, and video — decoded and played entirely on-device.
Data & Code
JSON, XML, plain text, and 100+ programming languages, syntax-highlighted.
Archives
Browse a ZIP's contents and open individual files without extracting everything.
How it works
Three steps. No account, no upload, no waiting.
1. Choose or drop a file
Drag a file onto the page or click to browse — nothing is sent anywhere yet.
2. View instantly
The right engine renders it in your browser immediately — no server round-trip, no wait.
3. Download when done
Save the original file, or a converted version, back to your device at any time.
How this is actually private
Not just a badge — here's exactly how, so the claim is verifiable.
100% Private
Files never leave your device. There is no server that ever receives your file's contents.
No Uploads
Every format is decoded and rendered locally via WebAssembly or JavaScript. Open your browser's Network tab and confirm nothing is sent.
No Storage
Nothing is written to a server or database. Memory clears the moment you close or reload the tab.
GDPR-friendly by design
There's no file data collection to comply with in the first place — no account, no tracking of file contents, no analytics on what you view.
Verify it yourself: open DevTools → Network tab before opening a file. No request fires with your file's contents — ever.
Why Real File Viewer
View Any File Instantly
Render PDFs, Office files, CAD drawings, and images right in your browser — no plugins, no installs.
Fast & Private
Every format decodes locally via WebAssembly and JavaScript — nothing is ever uploaded to a server.
16+ Formats, One Tool
From PDF to STEP to Outlook MSG — each format gets its own dedicated, purpose-built viewer.
Privacy First
No accounts, no tracking, no file storage — memory clears the moment you close the tab. GDPR-friendly by design.
Frequently asked questions
Is my data safe?
Yes. Every file format on this site is decoded and rendered entirely inside your browser using WebAssembly and JavaScript — nothing is ever uploaded to a server. You can confirm this yourself by watching your browser's Network tab while opening a file.
What file formats are supported?
24 formats with a real, working viewer — documents, spreadsheets, images, code, archives, media, CAD/3D, and more — each with its own dedicated page. See the full list on the Formats page.
Is there a file size limit?
There's no hard limit we enforce. The only real ceiling is your device's available memory for very large files.
Do I need an account?
No. There's no sign-up, no login, and no email required for any viewer on this site.
Does it work offline?
Yes. Install Real File Viewer as an app (PWA) from your browser, and every viewer keeps working without an internet connection.