Free Playable Size Checker
Upload your Unity Playworks (Luna) export and see the real, converted output size and pass/fail against each network's actual limit — not a guess from your raw upload size.
Real per-network results
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This checker converts for real — sign up and you can download exactly what you just tested for any network that passed.
Why this is different from a size estimate
Most "check your file size" tools compare your raw uploaded ZIP against a network's limit. That's misleading for playable ads: converted single-HTML output is often smaller than the raw export once unused cache generations are dropped and assets are properly encoded — or larger, if a network requires base64/base122 embedding that a raw relative-path reference didn't need. Either way, raw upload size doesn't reliably predict the real number.
This tool actually runs your export through PlayableKit's real conversion pipeline — the same one used for paid builds — for every supported network, then reports the real resulting size and pass/fail. Nothing is estimated.
Want to check structural issues too — missing entry file, broken inline scripts, missing engine assets? Try the free Playable Ad Validator.