# Filters

## What are filters?

The **onchain explorer tool** analyzes Web3 communities using blockchain data, offering insights into activities and trends. It employs various **filters** to examine specific wallet groups, utilizing both onchain and offchain data sources.

* Onchain filters analyze token holdings, transaction activity, smart contract interactions, net worth, and transaction dates.
* Offchain filters examine website visits, geographic location, traffic sources, UTM tags, and browser/OS information.
* This comprehensive approach facilitates **data-driven decision-making** for projects, investors, and researchers in the Web3 space.
* You can save your selected filter to an [**Audience**](https://docs.cookie3.com/cookie3-analytics/features/onchain-explorer/audiences)

## List of available filters

| Filter Type                                                                                             | Description                                        | Data Source   | Example Use Case                                 |
| ------------------------------------------------------------------------------------------------------- | -------------------------------------------------- | ------------- | ------------------------------------------------ |
| CSV List [(read more)](https://docs.cookie3.com/cookie3-analytics/features/onchain-explorer/csv-import) | Select wallets from uploaded address list          | User-provided | Analyzing specific group of known wallets        |
| Token Holdings                                                                                          | Filter wallets based on token holdings             | Onchain       | Identifying top holders of a project's token     |
| Token Buy/Sell Activity                                                                                 | Filter wallets based on token transactions         | Onchain       | Finding active traders of a specific token       |
| Smart Contract Interaction                                                                              | Filter wallets interacting with specific contracts | Onchain       | Analyzing users of a particular DApp             |
| Net Worth                                                                                               | Filter wallets based on their net worth            | Onchain       | Identifying high-value wallets in a community    |
| First/Last Transaction Date                                                                             | Filter wallets based on transaction dates          | Onchain       | Segmenting users by longevity or recent activity |
| Website                                                                                                 | Filter wallets based on website visits             | Offchain      | Analyzing engagement with project's website      |
| Location                                                                                                | Filter wallets based on geographic location        | Offchain      | Geographical analysis of community members       |
| Traffic Source                                                                                          | Filter wallets based on traffic source             | Offchain      | Evaluating effectiveness of marketing channels   |
| UTM Tags                                                                                                | Filter wallets based on UTM tags                   | Offchain      | Tracking success of specific marketing campaigns |
| Browser & OS                                                                                            | Filter wallets based on browser and OS             | Offchain      | Optimizing user experience for popular platforms |