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 76th pardouin 🇫🇷 844 154 15ms 16 May 2024 77th ovs-code 🇩🇪 843 113 33ms 6 Jul 2025 78th pardouin 🇫🇷 842 142 466ms 25 Jun 2024 79th sean-niemann 🇺🇸 840 151 433ms 11 Aug 2024 80th error256 839 231 791ms 29 Jul 2024 81st Steffan153 🇫🇮 837 129 2ms 11 Aug 2024 82nd MeWhenI 🇻🇦 833 156 9ms 30 Jul 2024 83rd MeWhenI 🇻🇦 833 203 15ms 28 Feb 2024 84th Shanethegamer 🇺🇸 833 254 112ms 2 Apr 2025 85th canissimia 🇦🇶 833 316 16ms 2 May 2022 86th AlephSquirrel 832 247 5ms 27 Jan 2025 87th sean-niemann 🇺🇸 831 130 2ms 11 Aug 2024 88th Steffan153 🇫🇮 831 176 97ms 11 Aug 2024 89th IanUtley 831 335 21ms 20 Dec 2022 90th sean-niemann 🇺🇸 830 152 368ms 17 Jul 2025 91st lynn 829 96 36ms 3 Apr 2023 92nd saito-ta 🇯🇵 828 118 3ms 13 Feb 2023 93rd MeWhenI 🇻🇦 828 216 15ms 7 Jan 2025 94th MeWhenI 🇻🇦 828 277 7ms 17 Oct 2021 95th Steffan153 🇫🇮 825 153 58ms 11 Aug 2024 96th nwellnhof 🇩🇪 825 391 56ms 9 Jul 2022 97th Steffan153 🇫🇮 824 154 446ms 11 Aug 2024 98th MeWhenI 🇻🇦 817 145 346ms 19 Jun 2025 99th kg583 🇺🇸 817 248 41ms 20 Jun 2025 100th MeWhenI 🇻🇦 815 148 704ms 15 Sep 2025 101st MeWhenI 🇻🇦 815 364 27ms 30 Sep 2021 102nd MeWhenI 🇻🇦 814 146 4ms 28 Feb 2024 103rd emplv 🇱🇻 812 150 9ms 29 Apr 2022 104th Steffan153 🇫🇮 812 160 16ms 31 Jul 2024 105th UnderKoen 🇳🇱 812 608 3ms 11 Nov 2024 106th MeWhenI 🇻🇦 809 165 342ms 27 days ago 107th MeWhenI 🇻🇦 808 204 132ms 28 Feb 2024 108th MeWhenI 🇻🇦 808 290 32ms 6 Jun 2023 109th Steffan153 🇫🇮 807 148 722ms 31 Jul 2024 110th jared-hughes 806 134 2ms 30 Jan 2023 111th nwellnhof 🇩🇪 805 193 267ms 24 Sep 2021 112th MeWhenI 🇻🇦 804 99 35ms 28 Feb 2024 113th kg583 🇺🇸 803 264 13ms 24 Oct 2025 114th Irratix 🇳🇱 802 152 9ms 6 May 2022 114th MeWhenI 🇻🇦 802 152 10ms 28 Feb 2024 114th vlpx 🇫🇮 802 152 8ms 1 Aug 2024 117th annaproxy 802 347 117ms 18 Sep 2023 118th primo-ppcg 🇹🇭 802 531 11ms 20 Jun 2025 119th sean-niemann 🇺🇸 800 148 378ms 11 Aug 2024 119th Steffan153 🇫🇮 800 148 326ms 11 Aug 2024 119th sean-niemann 🇺🇸 800 148 141ms 29 Oct 2024 122nd jared-hughes 799 158 58ms 30 Jan 2023 123rd lifthrasiir 🇰🇷 798 84 2ms 6 Dec 2024 124th stefangimmillaro 796 221 45ms 31 Jul 2023 125th namelessiw 794 168 354ms 20 days ago 126th GolfingSuccess 🇬🇷 792 164 15ms 18 Sep 2021 126th 5cw 🇺🇸 792 164 9ms 8 May 2024 128th MeWhenI 🇻🇦 792 223 3ms 28 Feb 2024 129th emgordon154 792 398 486ms 4 Oct 2025 130th pardouin 🇫🇷 791 126 955ms 14 Aug 2025 131st namelessiw 790 150 335ms 11 Aug 2024 132nd sean-niemann 🇺🇸 790 169 341ms 24 Sep 2025 133rd lynn 790 241 135ms 3 Feb 2023 134th Natanaelel 🇸🇪 788 85 2ms 12 Jan 2025 135th sean-niemann 🇺🇸 788 165 15ms 9 Mar 2025 136th MeWhenI 🇻🇦 786 152 904ms 24 May 2024 137th MeWhenI 🇻🇦 783 138 2ms 5 Jul 2024 138th AlephSquirrel 783 166 12ms 10 Jun 2023 138th bricknellj 783 166 16ms 3 Apr 2025 140th MeWhenI 🇻🇦 782 187 99ms 28 Feb 2024 141st pardouin 🇫🇷 781 122 44ms 22 Aug 2025 142nd MeWhenI 🇻🇦 781 147 219ms 28 Feb 2024 143rd sean-niemann 🇺🇸 781 153 643ms 9 Mar 2025 144th MeWhenI 🇻🇦 780 202 3ms 28 Feb 2024 145th MeWhenI 🇻🇦 779 128 828ms 14 Nov 2022 146th Yax42 🇫🇷 779 152 295ms 11 days ago 147th adyache 🇺🇸 779 216 58ms 28 Aug 2023 148th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 149th lynn 778 167 9ms 13 Feb 2023 150th emplv 🇱🇻 777 153 4ms 10 Jan 2023 First Prev 76–150 of 457 Next Last