QR Decoder in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st ovs-code 🇩🇪 1,000 67 2ms 5 Nov 2023 1st HPWiz 🇳🇿 1,000 67 2ms 5 Nov 2023 3rd HPWiz 🇳🇿 971 80 33ms 29 Sep 2021 4th lyphyser 968 79 60ms 29 Oct 2025 5th JayXon 🇺🇸 964 135 25ms 6 May 2023 6th emgordon154 959 83 40ms 17 Oct 2025 7th NewDefectus 🇮🇱 956 80 49ms 28 Sep 2021 8th JayXon 🇺🇸 954 100 39ms 7 May 2023 9th JayXon 🇺🇸 947 129 11ms 6 May 2023 10th JayXon 🇺🇸 943 127 516ms 23 Jan 2024 11th primo-ppcg 🇹🇭 942 104 3ms 22 May 2022 12th JayXon 🇺🇸 941 115 2ms 7 May 2023 13th nwellnhof 🇩🇪 936 102 37ms 25 Sep 2021 14th ovs-code 🇩🇪 936 128 486ms 6 Jul 2025 15th nwellnhof 🇩🇪 936 139 35ms 24 Jan 2022 16th JayXon 🇺🇸 935 127 428ms 7 May 2023 17th JayXon 🇺🇸 934 107 1,231ms 6 May 2023 18th Bubbler-4 931 72 2ms 2 Feb 2022 19th bitsandbeyond 🇳🇱 927 124 256ms 5 Apr 2025 20th JayXon 🇺🇸 926 120 372ms 12 Feb 2022 21st nwellnhof 🇩🇪 924 106 9ms 25 Sep 2021 22nd JayXon 🇺🇸 923 137 429ms 7 May 2023 23rd JayXon 🇺🇸 923 145 352ms 27 Sep 2025 24th btnlq 920 125 307ms 2 Oct 2021 24th nwellnhof 🇩🇪 920 125 281ms 18 Oct 2024 26th sean-niemann 🇺🇸 919 130 5ms 24 Jun 2025 27th SirBogman 🇺🇸 918 73 2ms 2 Nov 2023 28th JayXon 🇺🇸 917 130 143ms 23 Aug 2024 29th nwellnhof 🇩🇪 916 123 201ms 18 Sep 2021 30th JayXon 🇺🇸 912 133 2,462ms 17 Nov 2024 31st nwellnhof 🇩🇪 911 134 10ms 27 Sep 2021 32nd sean-niemann 🇺🇸 910 132 1ms 19 Nov 2025 33rd btnlq 910 143 12ms 24 Sep 2021 33rd ovs-code 🇩🇪 910 143 9ms 6 Jul 2025 35th sean-niemann 🇺🇸 905 134 1,074ms 15 Sep 2025 36th JayXon 🇺🇸 904 141 453ms 7 May 2023 37th JayXon 🇺🇸 903 124 149ms 24 May 2025 38th JayXon 🇺🇸 903 173 331ms 7 May 2023 39th sean-niemann 🇺🇸 902 131 1ms 17 Jul 2025 40th JayXon 🇺🇸 901 139 2ms 7 May 2023 41st jared-hughes 901 152 23ms 30 Jan 2023 42nd JayXon 🇺🇸 896 196 157ms 20 Jun 2023 43rd nwellnhof 🇩🇪 895 121 1ms 25 Sep 2021 44th Steffan153 🇫🇮 892 134 4ms 11 Aug 2024 45th JayXon 🇺🇸 892 162 371ms 8 Nov 2021 46th o0lit3 🇺🇸 891 110 3ms 1 Nov 2021 47th JayXon 🇺🇸 891 165 114ms 6 May 2023 48th Steffan153 🇫🇮 885 138 10ms 11 Aug 2024 49th JayXon 🇺🇸 885 179 2ms 6 May 2023 50th ovs-code 🇩🇪 883 162 85ms 22 Oct 2024 51st JayXon 🇺🇸 882 188 112ms 6 May 2023 52nd nwellnhof 🇩🇪 879 135 419ms 21 Nov 2021 53rd Lydxn 🇨🇦 879 148 15ms 22 Sep 2021 54th sean-niemann 🇺🇸 878 139 12ms 11 Aug 2024 55th nwellnhof 🇩🇪 878 144 439ms 3 Jan 2022 56th ovs-code 🇩🇪 877 218 122ms 30 Jan 2024 57th snoozingnewt 🇨🇦 876 176 109ms 37 hours ago 58th ovs-code 🇩🇪 874 180 25ms 5 Jun 2025 59th Bubbler-4 873 89 34ms 25 Feb 2022 59th ovs-code 🇩🇪 873 89 31ms 5 Apr 2023 61st JayXon 🇺🇸 873 183 1,487ms 2 Nov 2023 62nd kg583 🇺🇸 872 223 6ms 3 Mar 2026 63rd MeWhenI 🇻🇦 871 188 4ms 28 Feb 2024 64th Steffan153 🇫🇮 870 138 2ms 11 Aug 2024 65th nwellnhof 🇩🇪 869 154 397ms 25 Sep 2025 66th SirBogman 🇺🇸 865 205 40ms 3 Jun 2025 67th edsrzf 🇳🇿 865 206 3ms 16 Nov 2025 68th sean-niemann 🇺🇸 864 188 38ms 20 Nov 2024 69th MeWhenI 🇻🇦 859 189 40ms 28 Feb 2024 70th kg583 🇺🇸 858 191 4ms 3 Mar 2026 71st edsrzf 🇳🇿 856 227 6ms 17 Dec 2025 72nd MeWhenI 🇻🇦 856 239 40ms 13 Feb 2025 73rd kg583 🇺🇸 856 241 6ms 12 Mar 2026 74th MeWhenI 🇻🇦 852 112 33ms 14 Aug 2022 75th MeWhenI 🇻🇦 850 198 27ms 27 Feb 2024 76th MeWhenI 🇻🇦 848 203 1,021ms 28 Feb 2024 77th typeswitch-dev 🇵🇹 847 205 5ms 28 Aug 2023 78th ovs-code 🇩🇪 845 113 36ms 6 Jul 2025 79th pardouin 🇫🇷 845 154 19ms 16 May 2024 80th sean-niemann 🇺🇸 844 151 434ms 11 Aug 2024 1–80 of 531 Next Last