01 / FILESYSTEM
Find the file.
Search your local filesystem quickly using Lumen's NTFS Master File Table indexing.
NTFS / Master File Table
Lumen1.4.1Lumen / version 1.4.1Find what's already there.
Fast local file search for Windows. Search millions of files by filesystem metadata, then search inside supported documents when the filename isn't enough.
Actual Lumen interfaceSearch / filesystem
Lumen is ready. Start typing to search.
01The premise
Your computer is already full of answers. The problem is finding them.
Lumen is deliberately focused. It indexes your filesystem directly, gives you fast filename and metadata search, and lets you search the contents of supported documents.
02 / DOCUMENTS
Find what it says.
Search inside indexed PDFs, TXT files and DOCX documents with SQLite FTS5.
SQLite / FTS5
02Speed
Millions of files shouldn't require millions of seconds.
2M+
Files indexed
< 5s
Indexing time
Verified Lumen 1.4.1 benchmark claim. Actual performance varies with hardware, storage and filesystem conditions.
03Under the surface
Lumen looks deeper.
Rather than treating search as a black box, Lumen reads the NTFS Master File Table directly to build its local file index.
InputYour files
→
FilesystemNTFS
filesystem metadataindexed
master file tableMFT
file records2M+
04When names aren't enough
Search for the thing you remember.
"thermal mass"
passive_design_strategies.pdf
...thermal mass absorbs and stores heat, helping stabilize interior temperatures...
building_physics_notes.docx
...the use of thermal mass can reduce temperature fluctuations...
FTS5In-document search
The filename isn't always enough.
Lumen can search indexed document contents instead of asking you to remember exactly which file contained the words.
Supported formats
PDFTXTDOCX
05The interaction
Type something. Lumen does the rest.
Live product demonstrationwaiting
Lumen is searching your PC.
06Version 1.4.1
We removed things.
Earlier builds explored broader forms of search. Lumen 1.4.1 deliberately narrows the product back down to the parts that make a file-search utility useful.
Removed from 1.4.1
Semantic searchremoved
Local AI modelsremoved
Unnecessary inference machineryremoved
Kept
Raw filesystem searchkept
Document searchkept
Local operationkept
Less software. More search.
07Architecture
Small interface. Serious machinery underneath.
Lumen / simplified system architecture
01 / Interface
Search
Query, filters and result interaction.
→
02 / Index
MFT + FTS5
Filesystem metadata and indexed document text.
→
03 / Output
Results
The file, the path, and the information you were looking for.
08Before you install
Lumen needs access because it actually searches your filesystem.
Lumen 1.4.1 uses Administrator access for MFT access and background indexing. Windows may also present its normal SmartScreen warning for an independently distributed application.
01
Administrator access
Required for Lumen's NTFS Master File Table access and background indexing.
02
SmartScreen
Windows may identify the installer as coming from an unknown publisher because it is independently distributed.
03
Inspect the release
The source release is publicly available through the Lumen release repository.