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QR Decoder in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 300th janbehrens 🇩🇪 526 247 11ms 4 Dec 2024 302nd CaedenHarper 🇨🇦 524 228 744ms 19 Jan 2025 302nd commandblockguy 🇺🇸 524 228 974ms 1 Sep 2025 304th albanian-laundromat 524 230 1,246ms 12 Sep 2025 305th Natanaelel 🇸🇪 524 363 172ms 16 Jun 2025 306th Babafaba 522 249 15ms 27 hours ago 307th Natanaelel 🇸🇪 521 183 32ms 18 Feb 2024 308th rucin93 🇵🇱 520 250 21ms 21 Jan 2024 309th bac0id 519 257 322ms 25 Jun 2024 310th coreynash 516 236 10ms 13 Feb 2024 310th CaedenHarper 🇨🇦 516 236 11ms 29 Aug 2025 312th dokutan 515 232 1,083ms 9 Sep 2025 313th rucin93 🇵🇱 511 234 979ms 21 Jan 2024 314th DialFrost 🇸🇬 511 367 4ms 27 Sep 2024 315th cros107 🇦🇺 509 255 11ms 28 Jan 2024 315th RaBa21 🇭🇺 509 255 23ms 31 Jul 2025 317th jerrandolph 508 306 246ms 25 Sep 2025 318th CedricGebistorf 505 257 18ms 3 Mar 2022 319th andersk 🇺🇸 504 346 257ms 1 Nov 2022 320th uttumuttu 🇫🇮 503 242 9ms 9 Apr 2022 321st scpchicken 🇵🇼 501 224 157ms 25 Feb 2023 322nd Waffle3z 500 249 2ms 18 Sep 2021 323rd snoozingnewt 🇺🇸 500 284 97ms 14 Oct 2023 324th janbehrens 🇩🇪 499 238 12ms 4 Dec 2024 325th Babafaba 498 240 686ms 27 hours ago 326th MarcMush 🇫🇷 498 261 17ms 14 Jan 2024 326th blaztoma 🇱🇹 498 261 22ms 20 Sep 2025 328th emgordon154 497 245 9ms 4 Aug 2024 329th RYNO8 496 262 19ms 4 Sep 2023 330th CatsAreFluffy 494 263 22ms 17 Feb 2024 331st albanian-laundromat 494 319 3ms 16 Jul 2025 332nd wh3n3v3r 🇨🇿 492 264 17ms 14 Nov 2024 333rd SB-945 490 265 14ms 14 Mar 2024 334th Waffle3z 489 249 10ms 18 Sep 2021 335th mossiegoat 488 266 17ms 27 Aug 2025 336th olleicua 🇺🇸 487 250 9ms 21 Feb 2024 337th ridingqwerty 🇺🇸 487 267 17ms 14 Feb 2024 337th te-chnical 487 267 29ms 3 May 2025 339th albanian-laundromat 485 268 18ms 28 Jun 2025 339th FortuiteMan 🇫🇷 485 268 21ms 7 Jul 2025 341st p-vf 🇨🇭 481 246 354ms 21 Nov 2021 342nd alemelis 480 249 941ms 23 Aug 2024 343rd KatieLG 🇬🇧 479 254 9ms 26 Oct 2022 344th snoozingnewt 🇺🇸 478 272 18ms 29 Sep 2025 345th janbehrens 🇩🇪 477 286 20ms 13 Sep 2022 346th scpchicken 🇵🇼 474 206 3ms 24 Feb 2023 347th MeWhenI 🇻🇦 473 268 489ms 4 Mar 2022 348th Waffle3z 472 202 39ms 23 Sep 2021 349th CaedenHarper 🇨🇦 469 331 250ms 37 hours ago 350th janbehrens 🇩🇪 466 254 373ms 4 Dec 2024 351st janbehrens 🇩🇪 462 240 638ms 4 Dec 2024 352nd adamnielson42 🇺🇸 454 286 20ms 29 Nov 2023 353rd elgan65536 451 387 177ms 10 Apr 2024 354th emgordon154 447 265 178ms 5 Jan 2025 355th CaedenHarper 🇨🇦 446 299 390ms 23 days ago 356th janbehrens 🇩🇪 443 301 449ms 4 Dec 2024 357th snoozingnewt 🇺🇸 441 271 800ms 11 Feb 2024 358th MeWhenI 🇻🇦 441 480 316ms 18 Mar 2024 359th CaedenHarper 🇨🇦 440 269 407ms 12 days ago 360th knutae 🇳🇴 439 296 10ms 29 Oct 2021 361st Natanaelel 🇸🇪 438 737 24ms 19 Feb 2024 362nd qpwoeirut 434 299 20ms 8 days ago 363rd BambooleanLogic 🇸🇪 433 281 9ms 13 Jul 2023 364th IISResetMe 422 272 244ms 14 Jun 2024 365th msbranicky 419 310 18ms 12 Aug 2023 366th pschmid0 🇺🇸 414 287 5ms 23 Oct 2022 367th janbehrens 🇩🇪 411 307 2,375ms 20 Nov 2022 368th raspofabs 407 319 21ms 12 Nov 2023 369th MeWhenI 🇻🇦 406 506 6ms 19 Mar 2024 370th janbehrens 🇩🇪 404 314 457ms 13 Sep 2022 371st yzhs 🇩🇪 392 331 10ms 4 Jun 2022 372nd LeeCamp 387 336 18ms 9 Dec 2021 373rd msbranicky 384 311 994ms 16 Jan 2024 374th yuchuehw 384 338 17ms 5 Jan 2024 375th annaproxy 383 309 335ms 20 Mar 2022 First Prev 301–375 of 445 Next Last