Search the content
Find a phrase inside a PDF, Word or Excel file — not just by file name.
Desktop search for Windows
Find any file and email instantly
LumenRay Search searches inside the content of your documents and your Outlook email, and shows you the exact result —highlighted— in milliseconds. Without opening a single app.
< 50 ms
Results as you type
100 %
Local, no cloud
8+
Formats and email
0 €
Free forever
Features
One box to find everything
Stop searching separately in File Explorer and Outlook. LumenRay Search brings your files and email together in one instant search.
Fast as you type
Results appear as you type, feeling instant. Built for speed.
Files and email together
Your Outlook email and the content of its attachments (PDF, Word, Excel…), alongside your local documents, in a single result list.
Preview with highlighting
Read the document without opening it: the preview jumps to the first match and highlights it.
Outlook and .pst files
Indexes your mailbox and also any historical .pst files you add, with their emails and attachments.
Always up to date
Automatic background indexing: it detects changes and keeps your index fresh without you lifting a finger.
Private by design
Everything stays on your computer. Nothing is uploaded and the indexed content is encrypted at rest.
Just a shortcut away
It lives in the system tray and appears instantly with a global keyboard shortcut. Ready when you need it.
Light and efficient
Core written in Rust: modest resource usage and a binary that starts in the blink of an eye.
How it works
Ready in three steps
No servers, no complicated setup. Install it, let it index once, and start searching.
1
Install
Download LumenRay Search for Windows 11 and open it. No sign-up. Your files are searched offline; indexing your Outlook email requires an internet connection.
2
Index
Choose your folders and email. LumenRay Search builds the index in the background, just once.
3
Find
Press the shortcut, type a few words and open the exact result. It's that simple.
Compatibility
Reads what you actually use
Indexes the content of the most common office formats and your Outlook email, and also finds your images by file name.
PDF
Word
Excel
PowerPoint
TXT
CSV
Markdown
HTML
Outlook email
.pst files
Images
What it's for
The Windows file search that gets straight to the point
LumenRay Search is a fast alternative to Windows Search and Outlook search. Instead of opening File Explorer and digging through folder after folder, you type what you remember and instantly find the exact document or email — even when the word is inside a PDF, an Excel sheet, a Word document or a PowerPoint presentation.
It works on the real content of your files and your Outlook email, including attachments and historical .pst files. Everything is indexed and searched on your own computer, with nothing sent to the cloud: as private as it is fast.
Privacy
Your data never leaves your computer
LumenRay Search is a local search tool. No servers, no accounts and nothing sent to the cloud. Your information is yours, full stop.
- No cloud. All indexing and searching happen on your computer.
- Encrypted at rest. The indexed content is protected with on-disk encryption.
- No accounts or tracking. We don't require sign-up or collect usage data.
Screenshots
The app in action
Real screenshots of LumenRay Search at work.
Download
Start finding today
Download LumenRay Search free for Windows 11. No account, no strings attached.
Windows 11 64-bit · Manual install and updates · Free version
Verified download
VirusTotal scan
SHA-256:
cc71cb3c40768c7447a1a5f3312b9b40c71f91d0ff908662cc3b2d7bb3af3219
FAQ
Everything you want to know
Yes. The app is free and requires no account. Later we may add an optional voluntary donation for anyone who wants to support the project, but the search tool will stay free.
No. LumenRay Search runs 100% locally: it indexes and searches within your own computer. There are no servers or data sent to the cloud, and the index is encrypted at rest.
Windows 11 64-bit. Installation and updates are manual, designed for personal use on your own computer.
Yes. It indexes your Outlook email (Exchange Online) and also searches inside the content of attachments (PDF, Word, Excel…), not just the message body. It also includes historical .pst files you add as a path.
No. The core is written in Rust and indexing runs quietly in the background. Search is optimized to return results as you type.
For now LumenRay Search is Windows 11 only. We're focused on making the best possible experience on that platform.