DeCloud is a decentralized free storage service where you can upload your files.
Uses IPFS to save the file & Blockchain to save the location of the file uploaded.
DeCloud uses the Mumbai testnet, so you will need some $MATIC you can get for free here: https://faucet.polygon.technology/
Once you have some tokens to pay the fees, access the DeCloud website: https://decloud.vercel.app/ and connect your wallet clicking on the button at the top right corner.
Click the upload button, choose your file (make sure it's size is lower than 20MB) and wait a few seconds for the transaction to complete.
When the uploading is finished, the "My files" section should refresh and your file is successfully uploaded to DeCloud.
Now that your file is uploaded. You can access it from the IPFS URL.