If you need to turn an ordinary bitmap image into a vector image, you can use one of these services. Judging by the results, the proposed services use different algorithms and produce results of different quality. Taking this into account, we recommend you to try them all and choose the best option.
Vectorization
The Vectorization.eu service works best with images of about 1000 pixels. There are “Tracing Options” settings that allow you to customize the result of the processing. The vector file can be downloaded in svg format.

Vectorizer
Vectorizer.com is the simplest service possible. You just upload a bitmap picture and download a ready vector file in svg format. You can upload up to 20 images at a time. Despite the lack of fine-tuning, the service produces acceptable results.

Vector Magic
In our opinion, this is one of the most successful options. Vector Magic produces very decent results even if it processes a very small image. Plus, the service allows you to flexibly adjust the result, up to manual selection of colors in the palette.

Vectorizer.io
Vectorizer.io is interesting because it has several processing algorithms that produce interesting artistic results. If you don’t need perfect accuracy, we recommend experimenting with the service’s settings. Some of the proposed processing options turn out to be quite unusual.

Vectorizer.ai
Vectorizer.ai is the newest of the listed services. Just a few days ago it entered the open beta test. According to the developers, the service uses artificial intelligence algorithms. The service is very simple in operation and does not involve any customization. But, judging by our tests, it produces the most accurate results even when processing small pictures.

This is not a complete list of existing services. But this set should be enough for you for most situations when you need to convert a bitmap image into a vector image.