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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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 🇳🇿 972 80 33ms 29 Sep 2021 4th lyphyser 968 79 60ms 29 Oct 2025 5th JayXon 🇺🇸 964 135 23ms 6 May 2023 6th emgordon154 959 83 42ms 17 Oct 2025 7th NewDefectus 🇮🇱 956 80 49ms 28 Sep 2021 8th JayXon 🇺🇸 954 100 39ms 7 May 2023 9th JayXon 🇺🇸 946 129 8ms 6 May 2023 10th JayXon 🇺🇸 942 127 484ms 23 Jan 2024 11th primo-ppcg 🇹🇭 941 104 3ms 22 May 2022 12th JayXon 🇺🇸 940 115 2ms 7 May 2023 13th nwellnhof 🇩🇪 936 102 38ms 25 Sep 2021 14th nwellnhof 🇩🇪 936 139 35ms 24 Jan 2022 15th JayXon 🇺🇸 934 127 386ms 7 May 2023 16th ovs-code 🇩🇪 934 128 486ms 6 Jul 2025 17th Bubbler-4 931 72 2ms 2 Feb 2022 18th JayXon 🇺🇸 931 107 1,276ms 6 May 2023 19th bitsandbeyond 🇳🇱 925 124 262ms 5 Apr 2025 20th JayXon 🇺🇸 924 120 371ms 12 Feb 2022 21st nwellnhof 🇩🇪 923 106 9ms 25 Sep 2021 22nd JayXon 🇺🇸 922 145 447ms 27 Sep 2025 23rd JayXon 🇺🇸 921 137 472ms 7 May 2023 24th SirBogman 🇺🇸 918 73 2ms 2 Nov 2023 25th btnlq 918 125 239ms 2 Oct 2021 25th nwellnhof 🇩🇪 918 125 228ms 18 Oct 2024 27th sean-niemann 🇺🇸 917 130 4ms 24 Jun 2025 28th JayXon 🇺🇸 914 130 141ms 23 Aug 2024 29th nwellnhof 🇩🇪 913 123 213ms 18 Sep 2021 30th nwellnhof 🇩🇪 911 134 7ms 27 Sep 2021 31st btnlq 910 143 11ms 24 Sep 2021 31st ovs-code 🇩🇪 910 143 9ms 6 Jul 2025 33rd JayXon 🇺🇸 909 133 2,607ms 17 Nov 2024 34th sean-niemann 🇺🇸 906 132 1ms 19 Nov 2025 35th JayXon 🇺🇸 901 173 331ms 7 May 2023 36th sean-niemann 🇺🇸 900 134 810ms 15 Sep 2025 37th JayXon 🇺🇸 900 141 453ms 7 May 2023 38th sean-niemann 🇺🇸 897 131 1ms 17 Jul 2025 39th jared-hughes 897 152 23ms 30 Jan 2023 40th JayXon 🇺🇸 896 124 149ms 24 May 2025 41st JayXon 🇺🇸 896 139 1ms 7 May 2023 42nd nwellnhof 🇩🇪 894 121 1ms 25 Sep 2021 43rd JayXon 🇺🇸 893 196 160ms 20 Jun 2023 44th JayXon 🇺🇸 892 162 388ms 8 Nov 2021 45th o0lit3 🇺🇸 889 110 3ms 1 Nov 2021 46th Steffan153 🇫🇮 889 134 4ms 11 Aug 2024 47th JayXon 🇺🇸 887 165 112ms 6 May 2023 48th Steffan153 🇫🇮 884 138 9ms 11 Aug 2024 49th JayXon 🇺🇸 881 179 2ms 6 May 2023 50th Lydxn 🇨🇦 879 148 15ms 22 Sep 2021 51st nwellnhof 🇩🇪 878 135 362ms 21 Nov 2021 52nd sean-niemann 🇺🇸 878 139 10ms 11 Aug 2024 52nd rucin93 🇵🇱 878 139 7ms 2 days ago 54th snoozingnewt 🇨🇦 878 172 100ms 18 days ago 54th blaztoma 🇱🇹 878 172 108ms 5 days ago 56th JayXon 🇺🇸 877 188 114ms 6 May 2023 57th nwellnhof 🇩🇪 876 144 436ms 3 Jan 2022 58th ovs-code 🇩🇪 876 162 85ms 22 Oct 2024 59th Bubbler-4 874 89 34ms 25 Feb 2022 59th ovs-code 🇩🇪 874 89 31ms 5 Apr 2023 61st ovs-code 🇩🇪 873 218 122ms 30 Jan 2024 62nd nwellnhof 🇩🇪 868 154 458ms 25 Sep 2025 63rd scpchicken 🇵🇼 868 174 103ms 10 days ago 64th Steffan153 🇫🇮 867 138 2ms 11 Aug 2024 65th ovs-code 🇩🇪 867 180 25ms 5 Jun 2025 66th JayXon 🇺🇸 866 183 1,510ms 2 Nov 2023 67th kg583 🇺🇸 866 223 6ms 3 Mar 2026 68th MeWhenI 🇻🇦 864 188 4ms 28 Feb 2024 69th SirBogman 🇺🇸 858 205 43ms 3 Jun 2025 70th edsrzf 🇳🇿 857 206 3ms 16 Nov 2025 71st sean-niemann 🇺🇸 854 188 38ms 20 Nov 2024 72nd MeWhenI 🇻🇦 852 112 35ms 14 Aug 2022 73rd edsrzf 🇳🇿 851 227 6ms 17 Dec 2025 74th MeWhenI 🇻🇦 850 189 40ms 28 Feb 2024 75th kg583 🇺🇸 850 191 4ms 3 Mar 2026 76th MeWhenI 🇻🇦 850 198 25ms 27 Feb 2024 77th JayXon 🇺🇸 850 230 1,668ms 21 days ago 78th MeWhenI 🇻🇦 848 239 46ms 13 Feb 2025 79th typeswitch-dev 🇵🇹 847 205 5ms 28 Aug 2023 80th kg583 🇺🇸 847 241 5ms 12 Mar 2026 81st ovs-code 🇩🇪 845 113 38ms 6 Jul 2025 82nd pardouin 🇫🇷 845 154 19ms 16 May 2024 82nd blaztoma 🇱🇹 845 154 10ms 5 days ago 84th pardouin 🇫🇷 842 142 506ms 25 Jun 2024 85th sean-niemann 🇺🇸 840 151 434ms 11 Aug 2024 86th MeWhenI 🇻🇦 839 155 17ms 14 days ago 87th error256 839 231 824ms 29 Jul 2024 88th Steffan153 🇫🇮 838 129 1ms 11 Aug 2024 89th edsrzf 🇳🇿 834 243 47ms 17 Dec 2025 90th MeWhenI 🇻🇦 833 203 16ms 28 Feb 2024 91st MeWhenI 🇻🇦 833 232 6ms 17 Dec 2025 92nd Shanethegamer 🇺🇸 833 254 111ms 2 Apr 2025 93rd canissimia 🇦🇶 833 316 16ms 2 May 2022 94th sean-niemann 🇺🇸 832 130 1ms 11 Aug 2024 95th Steffan153 🇫🇮 831 176 103ms 11 Aug 2024 96th IanUtley 831 335 22ms 20 Dec 2022 97th sean-niemann 🇺🇸 830 152 456ms 17 Jul 2025 98th lynn 829 96 42ms 3 Apr 2023 99th saito-ta 🇯🇵 829 118 3ms 13 Feb 2023 100th MeWhenI 🇻🇦 828 216 15ms 7 Jan 2025 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