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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st ovs-code 🇩🇪 1,000 67 3ms 5 Nov 2023 1st HPWiz 🇳🇿 1,000 67 2ms 5 Nov 2023 3rd HPWiz 🇳🇿 971 80 33ms 29 Sep 2021 4th lyphyser 968 79 50ms 29 Oct 2025 5th JayXon 🇺🇸 963 135 21ms 6 May 2023 6th emgordon154 959 83 40ms 17 Oct 2025 7th NewDefectus 🇮🇱 956 80 52ms 28 Sep 2021 8th JayXon 🇺🇸 953 100 35ms 7 May 2023 9th JayXon 🇺🇸 944 129 9ms 6 May 2023 10th JayXon 🇺🇸 942 127 367ms 23 Jan 2024 11th primo-ppcg 🇹🇭 939 104 2ms 22 May 2022 12th JayXon 🇺🇸 939 115 2ms 7 May 2023 13th nwellnhof 🇩🇪 935 139 29ms 24 Jan 2022 14th nwellnhof 🇩🇪 934 102 33ms 25 Sep 2021 15th ovs-code 🇩🇪 934 128 432ms 6 Jul 2025 16th JayXon 🇺🇸 933 127 310ms 7 May 2023 17th Bubbler-4 931 72 2ms 2 Feb 2022 18th JayXon 🇺🇸 931 107 809ms 6 May 2023 19th bitsandbeyond 🇳🇱 925 124 183ms 5 Apr 2025 20th JayXon 🇺🇸 924 120 307ms 12 Feb 2022 21st nwellnhof 🇩🇪 921 106 9ms 25 Sep 2021 22nd JayXon 🇺🇸 921 137 374ms 7 May 2023 23rd JayXon 🇺🇸 920 145 472ms 27 Sep 2025 24th SirBogman 🇺🇸 918 73 2ms 2 Nov 2023 25th btnlq 918 125 216ms 2 Oct 2021 25th nwellnhof 🇩🇪 918 125 200ms 18 Oct 2024 27th sean-niemann 🇺🇸 914 130 5ms 24 Jun 2025 28th nwellnhof 🇩🇪 913 123 173ms 18 Sep 2021 29th JayXon 🇺🇸 911 130 132ms 23 Aug 2024 30th nwellnhof 🇩🇪 909 134 9ms 27 Sep 2021 31st btnlq 909 143 9ms 24 Sep 2021 31st ovs-code 🇩🇪 909 143 10ms 6 Jul 2025 33rd sean-niemann 🇺🇸 906 132 1ms 20 days ago 34th JayXon 🇺🇸 901 133 2,831ms 17 Nov 2024 35th sean-niemann 🇺🇸 900 134 766ms 15 Sep 2025 36th JayXon 🇺🇸 900 141 449ms 7 May 2023 37th JayXon 🇺🇸 898 173 269ms 7 May 2023 38th sean-niemann 🇺🇸 897 131 2ms 17 Jul 2025 39th jared-hughes 897 152 22ms 30 Jan 2023 40th JayXon 🇺🇸 896 124 100ms 24 May 2025 41st JayXon 🇺🇸 896 139 1ms 7 May 2023 42nd nwellnhof 🇩🇪 893 121 2ms 25 Sep 2021 43rd JayXon 🇺🇸 890 196 197ms 20 Jun 2023 44th o0lit3 🇺🇸 888 110 3ms 1 Nov 2021 45th Steffan153 🇫🇮 887 134 5ms 11 Aug 2024 46th JayXon 🇺🇸 887 165 98ms 6 May 2023 47th Steffan153 🇫🇮 883 138 8ms 11 Aug 2024 48th JayXon 🇺🇸 883 162 342ms 8 Nov 2021 49th JayXon 🇺🇸 881 179 3ms 6 May 2023 50th Lydxn 🇨🇦 878 148 15ms 22 Sep 2021 51st nwellnhof 🇩🇪 877 135 325ms 21 Nov 2021 52nd sean-niemann 🇺🇸 877 139 9ms 11 Aug 2024 53rd JayXon 🇺🇸 877 188 99ms 6 May 2023 54th nwellnhof 🇩🇪 876 144 382ms 3 Jan 2022 55th ovs-code 🇩🇪 876 162 84ms 22 Oct 2024 56th Bubbler-4 873 89 34ms 25 Feb 2022 56th ovs-code 🇩🇪 873 89 33ms 5 Apr 2023 58th JayXon 🇺🇸 873 183 1,313ms 2 Nov 2023 59th ovs-code 🇩🇪 873 218 122ms 30 Jan 2024 60th Steffan153 🇫🇮 867 138 1ms 11 Aug 2024 61st ovs-code 🇩🇪 867 180 26ms 5 Jun 2025 62nd nwellnhof 🇩🇪 866 154 416ms 25 Sep 2025 63rd JayXon 🇺🇸 866 203 1,719ms 22 Apr 2024 64th MeWhenI 🇻🇦 864 188 4ms 28 Feb 2024 65th edsrzf 🇳🇿 864 189 107ms 3 days ago 66th SirBogman 🇺🇸 858 205 45ms 3 Jun 2025 67th edsrzf 🇳🇿 857 206 3ms 22 days ago 68th kg583 🇺🇸 856 240 5ms 27 Jan 2025 69th sean-niemann 🇺🇸 854 188 38ms 20 Nov 2024 70th MeWhenI 🇻🇦 851 112 32ms 14 Aug 2022 71st MeWhenI 🇻🇦 850 189 41ms 28 Feb 2024 72nd MeWhenI 🇻🇦 850 198 25ms 27 Feb 2024 73rd MeWhenI 🇻🇦 848 239 41ms 13 Feb 2025 74th typeswitch-dev 🇵🇹 847 205 4ms 28 Aug 2023 75th MeWhenI 🇻🇦 845 251 7ms 28 Feb 2024 1–75 of 459 Next Last