Every time you accept user-controlled input you need to think about filtering, and sanity-checking.

For example:

https://thumbnail.ai/create?link=http://127.0.0.1/server-sta...

Thank you, Fixed.

Damn that is useful. I love it. Just put in a URL to a blog post of mine that had an infographic, but not a featured thumbnail, and it pulled in something from the infographic, and created it for me. I like it. thanks for sharing! Though I think I'd like an option where it doesn't pull the logo from my site and just gives me the image.

Glad you liked it. It's still mvp, will have customization options soon.

Hi HN, I built this MVP because using an image editor to create thumbnails for my blog posts was time consuming.

Good thumbnails can bring a lot of traffic to a post specially when shared on social networks. There are just 4 templates now and will add more. Would love your feedback.