JScrambler I actually did de-obfuscate to bypass some very significant bot detection a few years ago, but it took a bit more doing -- it uses ES6 features IIRC

JScrambler I actually did de-obfuscate to bypass some very significant bot detection a few years ago, but it took a bit more doing -- it uses ES6 features IIRC so I had to transpile it down to ES5 via babel first, but it worked OK after that. has a pretty good crack at obfuscator.io, too: https://closure-compiler.appspot.com/home#code%3D%252F%252F%2520%253D%253DClosureCompiler%253D%253D%250A%252F%252F%2520%2540output_file_name%2520default.js%250A%252F%252F%2520%2540compilation_level%2520ADVANCED_OPTIMIZATIONS%250A%252F%252F%2520%2540formatting%2520pretty_print%250A%252F%252F%2520%253D%253D%252FClosureCompiler%253D%253D%250A%250A(function(_0x161d09%252C_0xe210)%257Bvar%2520_0x341340%253D_0x2b43%252C_0xcbe4f7%253D_0x161d09()%253Bwhile(!!%255B%255D)%257Btry%257Bvar%2520_0x228bd5%253D-parseInt(_0x341340(0x1df))%252F0x1%252BparseInt(_0x341340(0x1de))%252F0x2%252BparseInt(_0x341340(0x1e5))%252F0x3*(-parseInt(_0x341340(0x1dd))%252F0x4)%252BparseInt(_0x341340(0x1e3))%252F0x5*(parseInt(_0x341340(0x1e0))%252F0x6)%252BparseInt(_0x341340(0x1e4))%252F0x7%252BparseInt(_0x341340(0x1e1))%252F0x8%252BparseInt(_0x341340(0x1e6))%252F0x9*(parseInt(_0x341340(0x1dc))%252F0xa)%253Bif(_0x228bd5%253D%253D%253D_0xe210)break%253Belse%2520_0xcbe4f7%255B'push'%255D(_0xcbe4f7%255B'shift'%255D())%253B%257Dcatch(_0x39d99f)%257B_0xcbe4f7%255B'push'%255D(_0xcbe4f7%255B'shift'%255D())%253B%257D%257D%257D(_0x4c13%252C0xaf378))%253Bfunction%2520hi()%257Bvar%2520_0x6c4afa%253D_0x2b43%253Bconsole%255B_0x6c4afa(0x1e2)%255D('Hello%255Cx20World!')%253B%257Dfunction%2520_0x2b43(_0x297e02%252C_0x195610)%257Bvar%2520_0x4c1309%253D_0x4c13()%253Breturn%2520_0x2b43%253Dfunction(_0x2b432d%252C_0x1b75d1)%257B_0x2b432d%253D_0x2b432d-0x1dc%253Bvar%2520_0x42fad5%253D_0x4c1309%255B_0x2b432d%255D%253Breturn%2520_0x42fad5%253B%257D%252C_0x2b43(_0x297e02%252C_0x195610)%253B%257Dfunction%2520_0x4c13()%257Bvar%2520_0x57f748%253D%255B'log'%252C'714060KYrWqs'%252C'387282xYOkyR'%252C'3VKGAoe'%252C'7077411TBGlUJ'%252C'10voBdfR'%252C'4109756DrGaTE'%252C'1107756uQYafl'%252C'825618MnVygR'%252C'36fcUkPH'%252C'2546320uORXvN'%255D%253B_0x4c13%253Dfunction()%257Breturn%2520_0x57f748%253B%257D%253Breturn%2520_0x4c13()%253B%257Dhi()%253B https://closure-compiler.appspot.com/home#code%3D%252F%252F%... That's the example from the site. "console.log('Hello world')" gets deobfuscated to "console[a(482)]("Hello World!");"