OpenAnyFile
Works
Viewing, inspecting and verifying. You get the source with language-aware colouring and line numbers. File details, exact byte size and the detected signature are always shown.
How to open a .jsp file
Opening a JSP file usually means tracking down special software. It does not have to. Here is what the format really is, and a browser-based way to read one right now.
What is a .jsp file?
JavaServer Page is a code format developed by Sun Microsystems, first appearing in 1999. It is normally produced by Java web applications.
Compiled into a servlet on first request, which is why the first hit after deployment is always the slowest.
| Full name | JavaServer Page |
|---|---|
| File category | Code |
| MIME type | text/x-jsp |
| Developer | Sun Microsystems |
| Introduced | 1999 |
| Usually created by | Java web applications |
| OpenAnyFile engine | syntax highlighter |
| Opens without upload | Yes — parsed locally in your browser |
Open a .jsp file in your browser
OpenAnyFile routes .jsp to its syntax highlighter, which highlights the source with language-aware colouring and line numbers.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .jsp 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 syntax highlighter.
- Your JSP opens on its own viewer page: the source with language-aware colouring and line numbers.
- 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
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
Is it safe to open a {E} file on a website?
It depends entirely on whether the website uploads it, and almost all of them do. That is a real problem when the code file in question is a contract, a client deliverable or something under NDA. OpenAnyFile removes the question: the decoding happens inside your browser tab, so there is no transfer, no queue, no temporary storage and no retention window to read about in a privacy policy.
Frequently asked questions about JSP files
Can I open a .jsp file without installing special software?
Yes. OpenAnyFile's syntax highlighter runs in your browser, so you can read a JSP file with nothing installed. You get the source with language-aware colouring and line numbers. For full editing you still need the original application — this is a viewer, not an editor.
How can I tell what a .jsp file actually contains?
The .jsp extension carries no fixed signature, so the extension alone proves nothing. Opening it in OpenAnyFile shows the raw header bytes and detected type, which is the only reliable way to identify one.
Is it safe to open a JSP 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 .jsp file, exactly?
JavaServer Page — a text/x-jsp format created by Sun Microsystems since 1999. Compiled into a servlet on first request, which is why the first hit after deployment is always the slowest.
Does the same viewer handle formats related to JSP?
Yes — the same engine also opens .html, .xml, .sql, 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 .jsp file, it will open too: