---
title: Query parameters
slug: web-experimentation/docs/query-parameters
docTags: 
createdAt: 2026-07-23T11:40:25.187Z
---

The following is a list of all the supported URL parameters available.

## Disable

Disables Optimizely on the page.

```javascript
?optimizely_disable=true
```

## Impersonate audiences

Comma-separated list of audience IDs to "impersonate".

```javascript
?optimizely_x_audiences={{audience_ids}}
```

## Override variations

Comma-separated list of variation IDs to bucket. If set overrides any variations, the visitor is in "naturally". If this parameter is set, it disables tracking events.

```javascript
?optimizely_x={{variation_ids}}
```

## Opt out

Removes a visitor from Optimizely Web Experimentation tracking (sets cookie to persist).

```javascript
?optimizely_opt_out=true
```

## Force tracking

Sends tracking events even if client is in preview or force variations/force audiences are present. Does *not* override disable tracking API.

```javascript
?optimizely_force_tracking=true
```

## Log

Prints execution info to your browser console. The possible values (case-insensitive) for the parameter are:

`OFF/FALSE` – No logs
`ERROR` – Errors only
`WARN` – Warning and above
`INFO/TRUE` – Info and above
`DEBUG` – Debug and above
`ALL` – All logs

```javascript
?optimizely_log=info
```

## View draft or paused experiments

Lets anyone view draft or paused experiments for QA testing.

```javascript
?optimizely_token=PUBLIC
```