# Conversion
When download single cell or spatial matrix data, because of the size of the data, Connected Multiomics needs to first convert the files in the data node to a different file format, then transfer to your local computer.
Click on a count data node or normalized count data node, there are two options in conversion section:
#### Export to h5ad files:
This option allows to export cell by feature matrix with other annotation of the cells, like PCA, UMAP, t-SNE coordinates of the cells and cluster annotation if they are performed in the analysis:
Click on each of the **Select data node** to choose the node in the analysis pipeline, you can select only one of the same annotation type if performed multiple times of the same task, e.g. you perform graph-based cluster task multiple times with different parameter, you can only choose one to export.
After click **Finish**, you will see a new data node generated, click on the node, you can download the file:
.png?alt=media)
#### Export matrix
This option allows you to export a text file of the full matrix or sparse matrix in 10X CellRanger .h5 format:
When export the full matrix in .txt file, you can choose features on columns or rows. You can choose to export annotation and/counts in the matrix by check the boxes in the *Include content* section. Only one level of annotation can be exported depends who is on row in the text file: if you choose **features on columns** option, cells will be on rows, then only cell annotation will be exported; if you choose f**eatures on rows**, then only feature annotation will be exported.
If you have multiple samples in the analysis, check **Combine samples** will generate one text file with all the cells from all the samples. If you don't check the box, you will generate one text file for each sample individually.
.png?alt=media)
.png?alt=media)
.png?alt=media)