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 Numbrix 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 Numbrix 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 76th pardouin 🇫🇷 844 154 20ms 16 May 2024 77th ovs-code 🇩🇪 843 113 32ms 6 Jul 2025 78th pardouin 🇫🇷 842 142 464ms 25 Jun 2024 79th edsrzf 🇳🇿 841 246 5ms 15 hours ago 80th sean-niemann 🇺🇸 840 151 433ms 11 Aug 2024 81st error256 839 231 824ms 29 Jul 2024 82nd AlephSquirrel 838 247 5ms 27 Jan 2025 83rd Steffan153 🇫🇮 837 129 1ms 11 Aug 2024 84th MeWhenI 🇻🇦 833 156 9ms 30 Jul 2024 85th MeWhenI 🇻🇦 833 203 13ms 28 Feb 2024 86th Shanethegamer 🇺🇸 833 254 112ms 2 Apr 2025 87th canissimia 🇦🇶 833 316 18ms 2 May 2022 88th sean-niemann 🇺🇸 831 130 2ms 11 Aug 2024 89th Steffan153 🇫🇮 831 176 104ms 11 Aug 2024 90th IanUtley 831 335 21ms 20 Dec 2022 91st sean-niemann 🇺🇸 830 152 372ms 17 Jul 2025 92nd lynn 829 96 38ms 3 Apr 2023 93rd saito-ta 🇯🇵 829 118 2ms 13 Feb 2023 94th MeWhenI 🇻🇦 828 216 16ms 7 Jan 2025 95th MeWhenI 🇻🇦 828 277 6ms 17 Oct 2021 96th Steffan153 🇫🇮 825 153 57ms 11 Aug 2024 97th nwellnhof 🇩🇪 825 391 56ms 9 Jul 2022 98th Steffan153 🇫🇮 824 154 417ms 11 Aug 2024 99th MeWhenI 🇻🇦 817 145 367ms 19 Jun 2025 100th kg583 🇺🇸 817 248 52ms 20 Jun 2025 101st MeWhenI 🇻🇦 815 148 717ms 15 Sep 2025 102nd MeWhenI 🇻🇦 815 364 25ms 30 Sep 2021 103rd MeWhenI 🇻🇦 814 146 4ms 28 Feb 2024 104th emplv 🇱🇻 812 150 9ms 29 Apr 2022 105th Steffan153 🇫🇮 812 160 16ms 31 Jul 2024 106th UnderKoen 🇳🇱 812 608 3ms 11 Nov 2024 107th MeWhenI 🇻🇦 809 165 434ms 7 Nov 2025 108th Steffan153 🇫🇮 808 148 590ms 31 Jul 2024 109th MeWhenI 🇻🇦 808 204 132ms 28 Feb 2024 110th MeWhenI 🇻🇦 808 290 31ms 6 Jun 2023 111th jared-hughes 806 134 2ms 30 Jan 2023 112th nwellnhof 🇩🇪 805 193 267ms 24 Sep 2021 113th MeWhenI 🇻🇦 804 99 39ms 28 Feb 2024 114th kg583 🇺🇸 803 264 5ms 24 Oct 2025 115th Irratix 🇳🇱 802 152 9ms 6 May 2022 115th MeWhenI 🇻🇦 802 152 8ms 28 Feb 2024 115th vlpx 🇫🇮 802 152 8ms 1 Aug 2024 118th annaproxy 802 347 117ms 18 Sep 2023 119th primo-ppcg 🇹🇭 802 531 10ms 20 Jun 2025 120th sean-niemann 🇺🇸 800 148 377ms 11 Aug 2024 120th Steffan153 🇫🇮 800 148 366ms 11 Aug 2024 120th sean-niemann 🇺🇸 800 148 148ms 29 Oct 2024 123rd jared-hughes 799 158 51ms 30 Jan 2023 124th lifthrasiir 🇰🇷 798 84 3ms 6 Dec 2024 125th ryyyn 🇺🇸 797 163 16ms 4 days ago 126th stefangimmillaro 796 221 40ms 31 Jul 2023 127th namelessiw 794 168 380ms 15 Nov 2025 128th GolfingSuccess 🇬🇷 793 164 16ms 18 Sep 2021 128th 5cw 🇺🇸 793 164 9ms 8 May 2024 130th MeWhenI 🇻🇦 792 223 3ms 28 Feb 2024 131st emgordon154 792 398 470ms 4 Oct 2025 132nd pardouin 🇫🇷 791 126 955ms 14 Aug 2025 133rd namelessiw 790 150 362ms 11 Aug 2024 134th sean-niemann 🇺🇸 790 169 389ms 24 Sep 2025 135th lynn 790 241 121ms 3 Feb 2023 136th Natanaelel 🇸🇪 788 85 2ms 12 Jan 2025 137th sean-niemann 🇺🇸 788 165 16ms 9 Mar 2025 138th MeWhenI 🇻🇦 787 152 885ms 24 May 2024 139th MeWhenI 🇻🇦 783 138 1ms 5 Jul 2024 140th AlephSquirrel 783 166 12ms 10 Jun 2023 140th bricknellj 783 166 16ms 3 Apr 2025 142nd sean-niemann 🇺🇸 782 153 547ms 9 Mar 2025 143rd MeWhenI 🇻🇦 782 187 96ms 28 Feb 2024 144th pardouin 🇫🇷 781 122 32ms 22 Aug 2025 145th MeWhenI 🇻🇦 781 147 276ms 28 Feb 2024 146th MeWhenI 🇻🇦 780 202 2ms 28 Feb 2024 147th MeWhenI 🇻🇦 779 128 828ms 14 Nov 2022 148th Yax42 🇫🇷 779 152 370ms 20 days ago 149th adyache 🇺🇸 779 216 58ms 28 Aug 2023 150th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 First Prev 76–150 of 461 Next Last