OpenAnyFile
Works
Viewing, inspecting and verifying. You get a byte-level hex and ASCII dump alongside the detected signature, exact size and type analysis. File details, exact byte size and the detected signature are always shown.
How to open a .rtf file
A RTF file is a Rich Text Format, introduced by Microsoft in 1987. Below: what is actually inside one, and how to open it without installing special software.
What is a .rtf file?
Rich Text Format is a binary & system format developed by Microsoft, first appearing in 1987. It is normally produced by WordPad, cross-platform exchange.
Plain ASCII with backslash control words, so you can read the markup in a text editor. It was the universal interchange format before DOCX and is still the safest bet between old word processors.
| Full name | Rich Text Format |
|---|---|
| File category | Binary & system |
| MIME type | application/rtf |
| Magic bytes (file signature) | 7B 5C 72 74 66 ({\rtf) |
| Developer | Microsoft |
| Introduced | 1987 |
| Usually created by | WordPad, cross-platform exchange |
| OpenAnyFile engine | universal hex inspector |
| Opens without upload | Yes — parsed locally in your browser |
Open a .rtf file in your browser
OpenAnyFile routes .rtf to its universal hex inspector, which inspects a byte-level hex and ASCII dump alongside the detected signature, exact size and type analysis.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .rtf file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the universal hex inspector.
- Your RTF opens on its own viewer page: a byte-level hex and ASCII dump alongside the detected signature, exact size and type analysis.
- Use fullscreen for a closer look, or download the file back out unchanged. Free, and free in the sense that there is no paid tier waiting behind step three.
What you can and cannot do with it here
Does not work
Full-fidelity rendering. This extension has no standard structure, so you get a byte-level inspection rather than a rendered view.
Local-only by design, not by promise
Plenty of sites promise they delete your uploads. OpenAnyFile avoids the promise by avoiding the upload. When you drop a .rtf file in, the browser grants the page temporary read access to those bytes and nothing more — the page has no path to send them anywhere. You can verify it in seconds: open DevTools, switch to the network tab, and open a file. The request list stays empty.
Frequently asked questions about RTF files
Can I open a .rtf file without installing special software?
Yes. OpenAnyFile's universal hex inspector runs in your browser, so you can read a RTF file with nothing installed. You get a byte-level hex and ASCII dump alongside the detected signature, exact size and type analysis. It will not replace the original application for editing, but it answers 'what is in this file' in seconds.
How can I check a file really is a RTF file?
Look at the first bytes rather than the extension. A genuine RTF begins with 7B 5C 72 74 66 ({\rtf). Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .rtf by mistake is easy to spot.
Is it safe to open a RTF file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .rtf file, exactly?
Rich Text Format — an application/rtf format created by Microsoft since 1987. Plain ASCII with backslash control words, so you can read the markup in a text editor. It was the universal interchange format before DOCX and is still the safest bet between old word processors.
Does the same viewer handle formats related to RTF?
Yes — the same engine also opens .dll, .doc, .exe, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .rtf file, it will open too: