Hello everyone

I'm new here and don't really have much experience with Pico-8 or Picotron, but I'm trying to learn by doing and of course I didn't start with the easiest task

	[8x8]

I'm trying to understand how to decode copied sprites PODs or their base64 content. I'm trying to see the sprite data in e.g. bytes, or any format I could use to recreate the sprite in another programme.

I tried to decode the b64 code with the Linux command base64 --decode and I get a file starting with lz4. When I then try to decode the file with the command lz4 -t (https://github.com/lz4/lz4/) I get the error message:
Error 44 : Unrecognized header : file cannot be decoded

Could someone give me a nudge in the right direction

	[8x8]

While Picotron uses LZ4 compression, it doesn't use the full LZ4 file format including headers etc. If you're looking for a working example of reading/writing Picotron carts, check out https://github.com/thisismypassport/shrinko8, which started as a PICO-8 project but handles Picotron too.

In my opinion, the picotron itself does the conversion.
I think it's very simple.
It was easy to exchange data via the clipboard.

The method of conversion is..
For example, this is possible like this:

-- This is the original data.
-- It is copied from the GFX editor with the "--[[pod_type="gfx"]]" part 
-- at the beginning removed.
p = unpod("b64:bHo0ACcAAAAtAAAA8QdweHUAQyAQEAQI8EAhAAEAIQAhIAEAAgAACAAUIBQAUAHgAfBe")

-- In this case, p is a user data type.
-- You can access each pixel as is.
print(p)
print(get(p,0,0))

-- Of course you can also set pixels.
set(p,1,0,9)

-- The contents may be much easier to understand 
-- if you convert it to uncompressed POD.
p2 = pod(p)
print(p2)

-- And if you want to compress the results of various 
-- edits into a POD, you can turn on the option.
-- Let's just talk about the amount of data. 
-- It depends on the case, but there are also cases 
-- where not compressing will result in less data.
p3 = pod(p, 0x7)
print(p3)

Thank you so much for the information.