# Troubleshooting guide for 3rd party trackers
##### **How to check if the tracker is a pixel:**
Easiest way to check if the tracker you’re using is a 1x1 pixel or not is just to open it in a browser, for example:
```
https://pixel.adsafeprotected.com/jload?anId=931059&advId=Eskimi&campId={campaign_id_enc}&pubId=
{site_domain_enc}{app_bundle_enc}&chanId={creative_id_enc}&placementId={placement_id}
```
From the first view these two trackers look almost identical, but they’re not, if you would open both of them in your browser you will see. You will always recognize the pixel if the browser window is a black screen with a small 1x1 white dot in the middle.
---
If you implement the pixel incorrectly (for example if you use the first URL) there might be huge discrepancies between us and the 3rd party platform (they might even not track anything), so it’s very important before you launch a campaign that uses 3rd party trackers to double check if the trackers are correctly implemented.
Other 3rd party pixel examples:
```
https://ad.doubleclick.net/ddm/trackimp/N705418.1727343ESKIMI.COM/B28985587.353603375;dc_trk_aid=
545020201;dc_trk_cid=182974786;ord=[timestamp];dc_lat=;dc_rdid=;tag_for_child_directed_treatment=;tfua=;
gdpr=${GDPR};gdpr_consent=${GDPR_CONSENT_755};ltd=?
```
```
https://track.adform.net/adfserve/?bn=60266225;1x1inv=1;srctype=3;ord={cachebuster}
```
**Some other ways to recognize if it’s a pixel:**
```javascript
```
This is a our internal IAS JS tracker, but you can extract a pixel from this tracker. Most of the tracking pixel will be placed inside the **<img>** element:
```javascript
```
If you look closely you we will that the height and the width are set to 1x1 for this element (witch almost always indicates that it’s 1x1 pixel). So just extract the URL part from this element and use it as a tracking pixel (it’s not always possible to extract the pixel from JS trackers, keep that in mind).
---
##### **How to validate that you have a 3rd party JavaScript tracker:**
- The tag will be in a `