QR Decoder in all languages in chars. 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 Chars Time Submitted 76th SirBogman 🇺🇸 830 108 25ms 31 Jan 2024 76th sean-niemann 🇺🇸 830 108 16ms 9 Mar 2025 78th MeWhenI 🇻🇦 830 193 25ms 27 Feb 2024 79th pardouin 🇫🇷 828 87 38ms 22 Aug 2025 80th typeswitch-dev 🇵🇹 827 205 4ms 28 Aug 2023 81st kg583 🇺🇸 821 168 5ms 24 Oct 2025 82nd canissimia 🇦🇶 821 316 18ms 2 May 2022 83rd Irratix 🇳🇱 820 119 9ms 6 May 2022 83rd vlpx 🇫🇮 820 119 9ms 1 Aug 2024 85th IanUtley 819 335 21ms 20 Dec 2022 86th Steffan153 🇫🇮 816 129 1ms 11 Aug 2024 87th sean-niemann 🇺🇸 816 151 433ms 11 Aug 2024 88th Shanethegamer 🇺🇸 816 253 112ms 29 Apr 2025 89th nwellnhof 🇩🇪 815 391 56ms 9 Jul 2022 90th GolfingSuccess 🇬🇷 814 102 333ms 25 Jan 2025 91st MeWhenI 🇻🇦 814 270 6ms 17 Oct 2021 92nd sean-niemann 🇺🇸 811 152 368ms 17 Jul 2025 93rd Steffan153 🇫🇮 811 176 97ms 11 Aug 2024 94th sean-niemann 🇺🇸 810 130 2ms 11 Aug 2024 95th btnlq 809 107 215ms 3 Oct 2021 96th MeWhenI 🇻🇦 809 203 15ms 28 Feb 2024 97th MeWhenI 🇻🇦 807 212 15ms 7 Jan 2025 98th sean-niemann 🇺🇸 806 103 352ms 9 Mar 2025 99th UnderKoen 🇳🇱 806 593 3ms 11 Nov 2024 100th Steffan153 🇫🇮 805 153 58ms 11 Aug 2024 101st MeWhenI 🇻🇦 803 364 27ms 30 Sep 2021 102nd Irratix 🇳🇱 801 112 21ms 7 May 2022 103rd Steffan153 🇫🇮 800 154 446ms 11 Aug 2024 104th MeWhenI 🇻🇦 798 145 346ms 19 Jun 2025 105th kg583 🇺🇸 794 113 16ms 22 Oct 2023 105th lifthrasiir 🇰🇷 794 113 23ms 16 Nov 2024 107th primo-ppcg 🇹🇭 794 531 10ms 20 Jun 2025 108th MeWhenI 🇻🇦 792 165 342ms 7 Nov 2025 109th MeWhenI 🇻🇦 791 146 4ms 28 Feb 2024 110th MeWhenI 🇻🇦 791 204 132ms 28 Feb 2024 111th MeWhenI 🇻🇦 791 290 32ms 6 Jun 2023 112th annaproxy 791 347 117ms 18 Sep 2023 113th nwellnhof 🇩🇪 788 193 267ms 24 Sep 2021 114th jared-hughes 785 134 2ms 30 Jan 2023 115th sean-niemann 🇺🇸 782 148 378ms 11 Aug 2024 115th Steffan153 🇫🇮 782 148 326ms 11 Aug 2024 117th jared-hughes 780 158 58ms 30 Jan 2023 118th emgordon154 780 398 486ms 4 Oct 2025 119th MarcMush 🇫🇷 779 102 766ms 14 Jan 2024 120th namelessiw 777 168 354ms 22 days ago 121st stefangimmillaro 777 221 45ms 31 Jul 2023 122nd lynn 775 241 135ms 3 Feb 2023 123rd duckyluuk 🇳🇱 773 116 18ms 29 Aug 2024 124th sean-niemann 🇺🇸 773 169 341ms 24 Sep 2025 125th namelessiw 771 150 335ms 11 Aug 2024 126th adyache 🇺🇸 770 208 58ms 28 Aug 2023 127th kg583 🇺🇸 769 108 375ms 20 Feb 2024 127th lifthrasiir 🇰🇷 769 108 362ms 2 Dec 2024 129th GrayJoKing 🇦🇺 768 92 133ms 30 Sep 2021 130th sean-niemann 🇺🇸 764 191 3ms 4 Jul 2025 131st pardouin 🇫🇷 763 126 955ms 14 Aug 2025 132nd MeWhenI 🇻🇦 763 138 1ms 5 Jul 2024 133rd MeWhenI 🇻🇦 763 187 99ms 28 Feb 2024 134th Yax42 🇫🇷 761 152 295ms 14 days ago 135th MeWhenI 🇻🇦 760 223 3ms 20 Jul 2023 136th lifthrasiir 🇰🇷 759 84 2ms 6 Dec 2024 137th emplv 🇱🇻 755 153 4ms 10 Jan 2023 138th MeWhenI 🇻🇦 753 189 41ms 28 Feb 2024 139th ovs-code 🇩🇪 752 140 1ms 10 Jul 2024 140th MeWhenI 🇻🇦 751 128 828ms 14 Nov 2022 141st ovs-code 🇩🇪 751 164 379ms 10 Jul 2024 142nd Natanaelel 🇸🇪 750 85 2ms 12 Jan 2025 143rd primo-ppcg 🇹🇭 748 104 3ms 22 May 2022 144th acotis 748 229 172ms 31 May 2025 145th MeWhenI 🇻🇦 747 165 390ms 28 Feb 2024 146th rotary-o 🇯🇵 746 175 313ms 8 May 2023 147th CornerMercury 🇬🇧 741 121 16ms 6 days ago 148th CLOStrophobic 🇮🇹 741 203 8ms 6 Mar 2025 149th SirBogman 🇺🇸 740 117 234ms 31 Jan 2024 150th MeWhenI 🇻🇦 740 188 323ms 28 Feb 2024 First Prev 76–150 of 457 Next Last