Filter Data
Easy-to-use tool to filter and search through large datasets
Drag & drop a CSV or JSON file here
Single File • Max 50MB
View Mode
What is Filter Data Online for Free?
Our Filter Data tool is a simple and fast way to search through large CSV or JSON files without needing complex software. Whether you're a developer cleaning up a database or a business owner looking for specific customer records, you can quickly set up filters to find exactly what you need. Since all processing happens in your browser, your private data never leaves your computer, keeping your information 100% secure.
Key Features & Benefits
Precise Logic Controls
Use multiple operators to find exact matches, greater-than values, or specific text patterns in seconds.
AND/OR Logic Chains
Create complex search rules by combining different filters to drill down into your data.
Instant Comparisons
Easily switch between your original data and your filtered results to make sure you've caught everything.
Totally Private
Your files never leave your computer. All filtering is done locally on your machine for maximum security.
How to Use the Filter Data Online for Free
Upload Your File
Select or drag and drop your CSV or JSON file to start filtering.
Add Your Filters
Click 'Add Filter' to create your search rules. Pick a column, choose an operator like 'equals' or 'contains', and enter the value you're looking for.
Use Logic
Connect multiple filters with 'AND' (all rules must match) or 'OR' (at least one rule must match) to refine your search.
Save Your Results
Once you've found the data you need, download your filtered list as a fresh CSV file.
Practical Use Cases
Financial Audits
Search through monthly reports to find specific transactions from a particular department or above a certain amount.
Customer Sorting
Upload a master directory and quickly isolate active customers in a specific city or region.
Log File Analysis
Filter through thousands of server logs to find only the 'Critical' or 'Fatal' error entries in seconds.
List Cleanup
Refine your newsletter database by quickly removing any rows that are missing email addresses or contact names.
FAQs
What file formats does the Data Filter tool support?
The Data Filter tool supports both CSV and JSON file formats. You can upload files up to 10MB in size. The tool automatically detects the format and parses the data for filtering.
How do I create multiple filter conditions?
Click the Add Filter button to create a new condition. Each filter lets you select a column, choose an operator (equals, contains, greater than, etc.), and enter a value. You can chain multiple filters together using AND or OR logic to create complex queries.
What filter operators are available?
The tool provides 11 operators: Equals (=), Not Equals (≠), Contains (⊃), Starts With (↦), Ends With (↤), Greater Than (>), Less Than (<), Greater or Equal (≥), Less or Equal (≤), Is Empty (∅), and Is Not Empty (∄). These operators work with text, numbers, and empty values.
How does AND/OR logic work in filters?
When you have multiple filters, each condition (except the first) can use AND or OR logic. AND means all conditions must be true for a row to pass. OR means at least one condition must be true. You can combine both to create sophisticated filtering rules.
Can I review data before and after filtering?
Yes! The tool has three view modes: Filters (to create and edit conditions), Preview (to see the original unfiltered data), and Results (to view filtered data with search capability). Switch between these tabs to compare before and after.
How do I export the filtered results?
After filtering your data, click the Download button to export filtered results as a CSV file. You can also click Copy Results to copy the filtered data to your clipboard in CSV format. Both options preserve your filter results.
Is my data secure when using this filter tool?
Absolutely! All data processing, filtering, and exports happen entirely in your browser using JavaScript. No data is uploaded to servers or transmitted anywhere. Your files remain completely private and secure on your device throughout the entire filtering process.