# Are the preview image urls from kraken "Get Stream by User" static / permanent? **URL:** \ **Category:** API\ **Created:** [April 4, 2018, 3:09pm UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086 "2018-04-04T15:09:44Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![DLausch](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@DLausch](https://discuss.dev.twitch.com/u/DLausch)\ **Post date:** [April 4, 2018, 3:09pm UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/1 "2018-04-04T15:09:45Z")
Hello, i want to embed streamer preview images on my website. my question is, are the urls that you get by kraken api static? means do this urls ever change? i dont want to call the api to much times over and over again for no reason. is if the url is always the same i can just cache this images time by time to embed them into my website. best wishes Dan ---
**Author:** ![DDrew](https://avatars.discourse-cdn.com/v4/letter/d/a87d85/32.png) [@DDrew](https://discuss.dev.twitch.com/u/DDrew)\ **Post date:** [April 5, 2018, 2:08am UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/2 "2018-04-05T02:08:25Z")
The previews are fetched from “[https://static-cdn.jtvnw.net/previews-ttv/](https://static-cdn.jtvnw.net/previews-ttv/)”, so yes they would be static images. The URL for previews is, [https://static-cdn.jtvnw.net/previews-ttv/live\_user\_{username}-{width}x{height}.jpg](https://static-cdn.jtvnw.net/previews-ttv/live_user_%7Busername%7D-%7Bwidth%7Dx%7Bheight%7D.jpg) ---
**Author:** ![DLausch](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@DLausch](https://discuss.dev.twitch.com/u/DLausch)\ **Post date:** [April 5, 2018, 2:33am UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/3 "2018-04-05T02:33:54Z")
Hello DDrew, thanks for your Answer. So if this is Fact, it makes a lot of APi Calls unnecessary. So as i am a “Good Boy” i will not (need to) use the API for this Task anymore and cache the images time by time to reduce Load on Twitch´s CDN too. Thank you Cheers Dan ---
**Author:** ![demolished](https://avatars.discourse-cdn.com/v4/letter/d/91b2a8/32.png) [@demolished](https://discuss.dev.twitch.com/u/demolished)\ **Post date:** [April 24, 2018, 3:08pm UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/4 "2018-04-24T15:08:59Z")
How can the {width} and {height} be defined in helix? ---
**Author:** ![BarryCarlyon](https://d3ovvz0v2ajtpu.cloudfront.net/user_avatar/discuss.dev.twitch.com/barrycarlyon/32/253_2.png) [@BarryCarlyon](https://discuss.dev.twitch.com/u/BarryCarlyon)\ **Post date:** [April 24, 2018, 4:30pm UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/5 "2018-04-24T16:30:12Z")
Set {width} and {height} to whatever width and height you want as noted [Helix: Defining thumbnail width/height](https://discuss.dev.twitch.com/t/helix-defining-thumbnail-width-height/15467/2) ---
**Author:** ![system](https://d2opxh93rbxzdn.cloudfront.net/original/2X/0/05909729875cce3b53e59d5561c4d23bb14948fc.png) [@system](https://discuss.dev.twitch.com/u/system)\ **Post date:** [May 24, 2018, 4:30pm UTC](https://discuss.dev.twitch.com/t/are-the-preview-image-urls-from-kraken-get-stream-by-user-static-permanent/15086/6 "2018-05-24T16:30:13Z")
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