0x0.st is **THE NULL POINTER** — **Temporary file hoster.**

- **Maximum file size:** 512.0 MiB

- **File URLs are valid for at least 30 days and up to a year.**

- **Expired files won’t be removed immediately but within the next minute.**

## Uploading files

Send HTTP POST requests to `https://0x0.st` with data encoded as `multipart/form-data`.

Valid fields are:

- `file`: data

- `url`: remote URL. Mutually exclusive with `file`. Remote site must return `Content-Length` header.

- `secret`: If present, a longer, hard-to-guess URL will be generated.

- `expires`: Sets maximum file lifetime in hours OR the time of expiration in milliseconds since UNIX epoch.

cURL examples:

```sh

curl -F'file=@yourfile.png' https://0x0.st

curl -F'url=http://example.com/image.jpg' https://0x0.st

curl -F'file=@yourfile.png' -Fsecret= https://0x0.st

curl -F'file=@yourfile.png' -Fexpires=24 https://0x0.st

curl -F'file=@yourfile.png' -Fexpires=1681996320000 https://0x0.st

```

It is possible to append a custom file name to any URL:

```text

https://0x0.st/aaa.jpg/image.jpeg

```

## Managing your files

Whenever a file that does not already exist or has expired is uploaded, the HTTP response header includes an `X-Token` field. You can use this to perform management operations on the file by sending POST requests to the file URL.

When using cURL, you can add the `-i` option to view the response header.

Valid fields are:

- `token`: Returned after upload in `X-Token` HTTP header field. Required.

- `delete`: Removes the file.

- `expires`: Sets maximum file lifetime in hours OR the time of expiration in milliseconds since UNIX epoch.

cURL examples:

```sh

curl -Ftoken=token_here -Fdelete= https://0x0.st/abc.txt

curl -Ftoken=token_here -Fexpires=3 https://0x0.st/abc.txt

```

## Notes for client software and script authors

None of these are hard rules, but I’d appreciate if you could follow them anyway!

Use a user agent string that uniquely identifies your program and is not an attempt at masquerading as something else. Good UA strings make my life a little easier by reducing the number of files I might have to sift through. I cannot and do not want to look at everything.