File Search Tool

Locate critical information across dozens of documents instantly. Perform deep-text searching with contextual snippets—all while keeping your data 100% private.

🔍

Select files to search

Drag & drop multiple text/code files or click to browse

⚡

This tool is an **Search Engine**. It reads your selected files into a temporary local index to perform rapid keyword searches. No data ever leaves your computer.

Indexing files: 0%

What is the File Search Tool?

The File Search Tool is a local text-scanning utility designed to search for specific words, lines, or programming variables across multiple files simultaneously. By importing a batch of text files and typing your query, you can locate all occurrences, complete with file names and highlighted context snippets.

This utility processes all search strings locally inside your browser session. Since it does not upload your documents, server logs, or source code files to a cloud index, your corporate data and personal archives remain completely confidential.

How to Use the File Search Tool

  1. Select Your Files: Drag and drop your files into the dotted drop zone, or click inside the zone to browse and upload them. The loading overlay will index the text files locally.
  2. Enter Your Search Query: Type the keyword, variable name, or phrase you want to find into the "Search Query" input box.
  3. Configure Case Settings: Check the "Case Sensitive" box if you want the search to distinguish between uppercase and lowercase letters.
  4. Execute the Search: Click the "Search Files" button. The tool will parse each file's lines and display the matching instances.
  5. Inspect the Snippets: Review the results list. Clicking on matching rows displays the line numbers and contextual text blocks where the query word appears.

Key Features

  • Multi-File Parallel Scanning: Search for strings across dozens of files at the same time in milliseconds.
  • Contextual Line Previews: Shows the exact line number and surrounding text where the match occurred.
  • Case Sensitivity Toggle: Choose between strict character matching or flexible searches.
  • Dynamic Local Indexer: Reads file contents locally using browser FileReader APIs for fast offline execution.
  • Total Data Isolation: Keeps your logs, codes, and documents secure by preventing network transfers.

Common Use Cases

  • Source Code Troubleshooting: Locate where variables, functions, or CSS classes are referenced across script files.
  • Server Log Audits: Scan server log exports for specific IP addresses, warning codes, or timestamp markers.
  • Text File Reference Mining: Search through text notes, essays, or config files for draft flags, reference codes, or name tags.
  • Configuration File Inspections: Check for specific keys or parameters inside JSON, YAML, or XML files.

Frequently Asked Questions

This utility is optimized for plain-text formats like .txt, .csv, .json, .log, .md, and coding scripts (.html, .css, .js, .py, .cpp, etc.). Binary documents (like PDFs, DOCX, or Excel sheets) are not parsed by this text scanner.

No. All text parsing, indexing, and matching operations execute locally inside your browser sandbox. No queries, filenames, or file contents are sent over the network.

To enable instant searching, the browser reads the text contents of all imported files into RAM when you upload them. The loading progress shows how many files have been successfully read.

The tool can search dozens of text files. For lists containing hundreds of large files (over 50MB combined), we recommend searching in smaller batches to avoid browser memory lags.

This version is designed for simple, direct string queries. For regex pattern matching, we recommend copying the file contents and using our specialized Regex Tester.

🔒 Privacy & Data Note: File reading, indexing, and text searching are processed locally. No files, queries, or results are sent to our servers.