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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 301st albanian-laundromat 527 229 895ms 22 hours ago 302nd retrohun 527 259 58ms 23 Nov 2022 303rd FlorianCassayre 🇫🇷 526 247 9ms 21 Oct 2023 303rd janbehrens 🇩🇪 526 247 12ms 4 Dec 2024 305th CaedenHarper 🇨🇦 524 228 744ms 19 Jan 2025 305th commandblockguy 🇺🇸 524 228 974ms 1 Sep 2025 307th Natanaelel 🇸🇪 524 363 172ms 16 Jun 2025 308th Babafaba 522 249 16ms 19 days ago 309th Natanaelel 🇸🇪 521 183 32ms 18 Feb 2024 310th rucin93 🇵🇱 520 250 15ms 21 Jan 2024 311th bac0id 519 257 303ms 25 Jun 2024 312th coreynash 516 236 9ms 13 Feb 2024 312th CaedenHarper 🇨🇦 516 236 11ms 29 Aug 2025 314th dokutan 515 232 1,083ms 9 Sep 2025 315th rucin93 🇵🇱 511 234 979ms 21 Jan 2024 316th cros107 🇦🇺 509 255 9ms 28 Jan 2024 316th RaBa21 🇭🇺 509 255 16ms 31 Jul 2025 318th jerrandolph 508 306 266ms 25 Sep 2025 319th CedricGebistorf 505 257 16ms 3 Mar 2022 320th andersk 🇺🇸 504 346 227ms 1 Nov 2022 321st uttumuttu 🇫🇮 503 242 9ms 9 Apr 2022 322nd scpchicken 🇵🇼 501 224 155ms 25 Feb 2023 323rd Waffle3z 500 249 2ms 18 Sep 2021 324th snoozingnewt 🇺🇸 500 284 83ms 14 Oct 2023 325th janbehrens 🇩🇪 499 238 4ms 4 Dec 2024 326th Babafaba 498 240 686ms 19 days ago 327th MarcMush 🇫🇷 498 261 16ms 14 Jan 2024 327th blaztoma 🇱🇹 498 261 16ms 20 Sep 2025 329th emgordon154 497 245 9ms 4 Aug 2024 330th RYNO8 496 262 16ms 4 Sep 2023 331st CatsAreFluffy 494 263 16ms 17 Feb 2024 332nd albanian-laundromat 494 319 3ms 16 Jul 2025 333rd wh3n3v3r 🇨🇿 492 264 16ms 14 Nov 2024 334th SB-945 490 265 10ms 14 Mar 2024 335th Waffle3z 489 249 8ms 18 Sep 2021 336th mossiegoat 488 266 15ms 27 Aug 2025 337th olleicua 🇺🇸 487 250 10ms 21 Feb 2024 338th ridingqwerty 🇺🇸 487 267 15ms 14 Feb 2024 338th te-chnical 487 267 24ms 3 May 2025 340th albanian-laundromat 485 268 16ms 28 Jun 2025 340th FortuiteMan 🇫🇷 485 268 16ms 7 Jul 2025 342nd p-vf 🇨🇭 481 246 354ms 21 Nov 2021 343rd DialFrost 🇸🇬 481 367 3ms 27 Sep 2024 344th alemelis 480 249 941ms 23 Aug 2024 345th KatieLG 🇬🇧 479 254 9ms 26 Oct 2022 346th snoozingnewt 🇺🇸 478 272 16ms 29 Sep 2025 347th janbehrens 🇩🇪 477 286 20ms 13 Sep 2022 348th scpchicken 🇵🇼 474 206 3ms 24 Feb 2023 349th MeWhenI 🇻🇦 473 268 489ms 4 Mar 2022 350th Waffle3z 472 202 39ms 23 Sep 2021 351st CaedenHarper 🇨🇦 471 330 245ms 12 hours ago 352nd janbehrens 🇩🇪 466 254 373ms 4 Dec 2024 353rd janbehrens 🇩🇪 462 240 638ms 4 Dec 2024 354th adamnielson42 🇺🇸 454 286 14ms 29 Nov 2023 355th elgan65536 451 387 156ms 10 Apr 2024 356th emgordon154 447 265 146ms 5 Jan 2025 357th CaedenHarper 🇨🇦 446 299 350ms 7 Oct 2025 358th janbehrens 🇩🇪 443 301 303ms 4 Dec 2024 359th snoozingnewt 🇺🇸 441 271 800ms 11 Feb 2024 360th MeWhenI 🇻🇦 441 480 80ms 18 Mar 2024 361st CaedenHarper 🇨🇦 440 269 407ms 17 Oct 2025 362nd knutae 🇳🇴 439 296 9ms 29 Oct 2021 363rd Natanaelel 🇸🇪 438 737 24ms 19 Feb 2024 364th qpwoeirut 434 299 16ms 26 days ago 365th BambooleanLogic 🇸🇪 433 281 9ms 13 Jul 2023 366th IISResetMe 422 272 244ms 14 Jun 2024 367th msbranicky 419 310 16ms 12 Aug 2023 368th pschmid0 🇺🇸 414 287 3ms 23 Oct 2022 369th janbehrens 🇩🇪 411 307 2,229ms 20 Nov 2022 370th raspofabs 407 319 19ms 12 Nov 2023 371st MeWhenI 🇻🇦 406 506 6ms 19 Mar 2024 372nd janbehrens 🇩🇪 404 314 457ms 13 Sep 2022 373rd yzhs 🇩🇪 392 331 9ms 4 Jun 2022 374th LeeCamp 387 336 17ms 9 Dec 2021 375th msbranicky 384 311 994ms 16 Jan 2024 First Prev 301–375 of 448 Next Last