diff --git a/README.md b/README.md
index 9551d9d..6c5f228 100644
--- a/README.md
+++ b/README.md
@@ -68,10 +68,16 @@ logs.)
     * `id`: textual identifier for the logs. Used as the filename, as above.
     * `lines`: log data. Newlines should be  encoded as `\n`, as normal in JSON).
 
+  A summary of the current log file formats that are uploaded for `log` and
+  `compressed-log`  is [available](docs/submitted_reports.md).
+
 * `compressed-log`: a gzipped logfile. Decompressed and then treated the same as
   `log`.
 
   Compressed logs are not supported for the JSON upload encoding.
+  
+  A summary of the current log file formats that are uploaded for `log` and
+  `compressed-log` is [available](docs/submitted_reports.md).
 
 * `file`: an arbitrary file to attach to the report. Saved as-is to disk, and
   a link is added to the github issue. The filename must be in the format
diff --git a/changelog.d/44.misc b/changelog.d/44.misc
new file mode 100644
index 0000000..b5f09c3
--- /dev/null
+++ b/changelog.d/44.misc
@@ -0,0 +1 @@
+Add documentation on the types and formats of files submitted to the rageshake server
diff --git a/docs/submitted_reports.md b/docs/submitted_reports.md
new file mode 100644
index 0000000..45bd719
--- /dev/null
+++ b/docs/submitted_reports.md
@@ -0,0 +1,87 @@
+# Common report styles
+
+Rageshakes can come from a number of applications, and we provide some practical notes on the generated format.
+
+At present these should not be considered absolute nor a structure to follow; but an attempt to document the currently visible formats as of January 2022.
+
+## Feedback 
+
+Log files are not transmitted; the main feedback is entirely within the user message body.
+
+This occurs from all platforms.
+
+## Element Web / Element Desktop
+
+Log files are transmitted in reverse order (0000 is the youngest) 
+
+Log line format:
+```
+2022-01-17T14:57:20.806Z I Using WebAssembly Olm
+< ---- TIMESTAMP ------> L <-- Message ----
+
+L = log level, (W=Warn, I=Info, etc)
+```
+
+New log files are started each restart of the app, but some log files may not contain all data from the start of the session.
+
+## Element iOS
+
+Crash Log is special and is sent only once (and deleted on the device afterwards)
+
+`crash.log`
+
+Following logs are available, going back in time with ascending number.
+console.log with no number is the current log file.
+```
+console.log (newest)
+console-1.log 
+...
+console-49.log (oldest)
+
+console-nse.log (newest)
+console-nse-1.log 
+...
+console-nse-49.log (oldest)
+
+console-share.log (newest)
+console-share-1.log
+console-share-49.log (oldest)
+```
+
+## Element Android
+
+There is a historical issue with the naming of files, documented in [issue #40](https://github.com/matrix-org/rageshake/issues/40).
+
+Log file 0000 is odd, it contains the logcat data if sent.
+
+Log line format:
+```
+01-17 14:59:30.657 14303 14303 W Activity: Slow Operation: 
+<-- TIMESTAMP ---> <-P-> <-T-> L <-- Message --
+
+L = Log Level (W=Warn, I=Info etc)
+P = Process ID
+T = Thread ID
+```
+Remaining log files are transmitted according to their position in the round-robin logging to file - there will be (up to) 7 files written to in a continious loop; one of the seven will be the oldest, the rest will be in order.
+
+Log line format:
+```
+2022-01-17T13:06:36*838GMT+00:00Z 12226 D/ /Tag: Migration: Importing legacy session
+< ---- TIMESTAMP ---------------> <-P-> L        <-- Message ----
+
+L = log level, (W=Warn, I=Info, etc)
+P = Process ID
+```
+
+Once the fix to #40 is in place, we will see the following files:
+
+```
+logcatError.log
+logcat.log
+crash.log
+keyrequests.log
+log-[1-7].log
+```
+
+Log 1-7 are logs from a round-robin buffer and are ordered but the start point is undefined