Splits.io can read splits from any timer that supports the generic Splits.io Exchange Format. Splits.io additionally has manual support for several timers that don't support the format.

In LiveSplit, you can upload from within the program with a right click -> Share.

Yes, since the very beginning! Have a look or lend a hand on GitHub!

Yes as well!

If you use LiveSplit, we try to associate your splits with an existing game and category from speedrun.com using the corresponding LiveSplit fields. If we get it wrong or if you use another timer, you can manually edit your run's game and category by pressing "edit" on your run's page, near the download link.

We give full game pages to any game that's on speedrun.com.

This isn't because we think all other games are lame or anything; it just happens to make it much easier to do bookkeeping. Once you get your game on speedrun.com this process should happen automatically next time a run is uploaded.

This is a really interesting bug! If you don't care about why it happens, just scroll to the bottom.

When LiveSplit calculates your sum of best, it's actually not a literal sum of your best segments! Take this run:

A ---> B ---> C

Let's say a new route is discovered that foregoes B , so you update your splits to accomodate.

A ---> D ---> E ---> C

Because it's a new route, you're not great at D and E yet! The route is strictly better, but your time actually suffers while you grind attempts. With the simple way of calculating sum of best, your sum-of-best suffers as well! But LiveSplit realizes this and tries to give you what you might actually be wanting from a sum-of-best: the answer to the question "What's my fastest possible run?".

So instead of just adding up all your gold times, LiveSplit keeps track of your route changes. Internally, LiveSplit remembers your splits more like this:

A -------> B ------> C
 \                   ^
  \---> D ---> E ---/

Because it remembers your gold time for B , your sum-of-best will actually not change when you update your route! As odd as it may sound, your sum-of-best is defined as the shortest path through this network of splits. If your gold time for B is faster than the sum of your D and E gold times, then A -> B -> C is still your fastest route, and so your sum-of-best is still the sum of their gold times, even after you've switched routes.

Now, here's where the bug comes up! Let's say again you have a run that looks like this:

A ---> B ---> C

And let's say again that a new route is discovered and it's time to update your splits. Being a reasonable person, you might just add a new split between B and C , then rename B.

A ---> D ---> E ---> C
       |
 was called B

Because you've only renamed B (rather than deleting it) and changed what it actually means to complete it in-game, LiveSplit now holds a corrupted network of the possible paths through the game:

A ---> D ----------> C
        \            ^
         \---> E ---/

In this corrupted map of routes, A -> D -> C will always be faster than A -> D -> E -> C , so LiveSplit will build its sum-of-best based on the sum of those segments' gold times, even though that's not a real route through the game.

There's one workaround to this, one fix, and one way to avoid it in the future.

To work around this issue without damaging your splits (but also without repairing them), go into LiveSplit's settings and check "simple sum of best" . This will force LiveSplit to stop being clever and actually just sum your bests to get a sum-of-best time. However, your splits will still be corrupted under the hood, which will show when you upload them to Splits.io or otherwise perform analysis on them or share them with others.

To fix this problem if it's already happened to you, go into LiveSplit, go into the Splits Editor, and then click on Other... -> Clean Sum of Best. This will guide you through cleaning up your splits by removing any times that might be corrupted.

To avoid this problem in the future, never repurpose a split. If how you play a split in the game changes, delete the split and recreate it. If you want to separate one split into two, delete the split and create two new ones. If you do this LiveSplit will remember that the splits existed and are a path through the game, but won't use them to build nonsensical paths and therefore nonsensical sum-of-bests.