---
title: optionsToQueryString
summary: Convert image optimizer options into the query string that is sent to the image optimizer, for logging and debugging purposes.
url: https://www.fastly.com/documentation/reference/compute/sdks/javascript/js-compute/image-optimizer/fn.optionsToQueryString/
---

**Kind:** Function  
**Module:** [image-optimizer](https://www.fastly.com/documentation/reference/compute/sdks/javascript/js-compute/image-optimizer/)  
**Package:** @fastly/js-compute 4.0.1  
**Since:** 3.36.0  
**Source:** https://github.com/fastly/js-compute-runtime/blob/70cf30af4e657879b2d1e7eafab880e39e3a3f7d/types/image-optimizer.d.ts#L480

```javascript
optionsToQueryString(options: ImageOptimizerOptions): string
```

Convert image optimizer options into the query string that is sent to the image optimizer,
for logging and debugging purposes.

**Parameters**

- `options`: `ImageOptimizerOptions`

**Returns**

`string`