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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 150th duckyluuk 🇳🇱 735 113 433ms 29 Aug 2024 152nd nwellnhof 🇩🇪 734 106 9ms 22 May 2022 153rd SirBogman 🇺🇸 734 168 382ms 2 Jan 2022 154th MeWhenI 🇻🇦 734 181 23ms 28 Feb 2024 155th rak1507 🇬🇧 733 87 2ms 31 Jan 2022 156th rucin93 🇵🇱 733 133 9ms 19 Jan 2025 157th emgordon154 729 123 15ms 12 Apr 2025 158th SirBogman 🇺🇸 727 99 38ms 31 Jan 2024 159th SirBogman 🇺🇸 726 145 2ms 24 Nov 2021 159th KasperKivimaeki 🇫🇮 726 145 849ms 12 days ago 161st neel11235813 723 124 19ms 5 Nov 2023 162nd MeWhenI 🇻🇦 723 157 2ms 28 Feb 2024 163rd MeWhenI 🇻🇦 722 202 3ms 28 Feb 2024 164th MeWhenI 🇻🇦 720 239 1,682ms 22 Apr 2024 165th sean-niemann 🇺🇸 718 134 835ms 14 Aug 2025 166th dvargas46 🇺🇸 718 185 21ms 7 Apr 2023 167th MeWhenI 🇻🇦 718 192 80ms 28 Feb 2024 168th SirBogman 🇺🇸 715 104 42ms 28 Nov 2023 169th Natanaelel 🇸🇪 708 105 47ms 20 Feb 2024 170th kg583 🇺🇸 707 224 4ms 24 Oct 2025 171st tatzyr 🇯🇵 706 102 35ms 11 Mar 2025 172nd orthoplex 🇨🇽 706 127 16ms 26 Oct 2021 172nd ndren 706 127 28ms 22 Nov 2023 174th annaproxy 695 129 10ms 8 Jun 2022 175th MeWhenI 🇻🇦 695 219 6ms 13 Aug 2024 176th dcgjb 692 125 736ms 30 Jan 2024 176th nwellnhof 🇩🇪 692 125 200ms 18 Oct 2024 178th inventshah 692 178 377ms 12 Nov 2022 179th MeWhenI 🇻🇦 692 220 258ms 28 Feb 2024 180th edsrzf 🇳🇿 689 230 3ms 24 Oct 2025 181st emgordon154 686 121 495ms 12 Apr 2025 182nd Artemis21 🇬🇧 684 131 17ms 10 Jan 2025 182nd CornerMercury 🇬🇧 684 131 17ms 2 Mar 2025 184th neel11235813 680 122 430ms 27 Mar 2024 185th MeWhenI 🇻🇦 679 132 9ms 22 Oct 2021 186th inventshah 679 155 2ms 12 Nov 2022 187th MeWhenI 🇻🇦 677 623 13ms 27 Jan 2025 188th DialFrost 🇸🇬 674 118 653ms 2 Jan 2024 189th TFeld00 🇩🇰 674 133 15ms 19 May 2022 189th anter69 🇭🇺 674 133 16ms 7 Jul 2025 191st snoozingnewt 🇺🇸 673 205 85ms 19 Oct 2025 192nd helbling 🇨🇭 672 145 9ms 6 Sep 2024 192nd voytxt 🇨🇿 672 145 9ms 2 Jun 2025 194th jacobly0 🇺🇸 672 256 1,634ms 22 Apr 2024 195th albanian-laundromat 669 147 806ms 25 Oct 2025 196th MeWhenI 🇻🇦 669 239 41ms 13 Feb 2025 197th Waffle3z 666 167 2ms 8 Apr 2022 198th MeWhenI 🇻🇦 665 148 694ms 15 Sep 2025 199th stefangimmillaro 664 229 271ms 18 Oct 2023 199th edsrzf 🇳🇿 664 229 245ms 4 Oct 2025 201st weliveinhell 🇭🇹 663 147 11ms 21 Jan 2024 202nd Steffan153 🇫🇮 663 197 298ms 11 Aug 2024 203rd primo-ppcg 🇹🇭 661 201 14ms 24 Jan 2022 204th saito-ta 🇯🇵 660 118 3ms 13 Feb 2023 205th DialFrost 🇸🇬 659 136 17ms 23 Feb 2024 205th KatieLG 🇬🇧 659 136 10ms 14 Sep 2024 207th MeWhenI 🇻🇦 659 176 1ms 28 Feb 2024 207th pardouin 🇫🇷 659 176 3,946ms 20 May 2025 209th NewDefectus 🇮🇱 658 160 2ms 28 Dec 2021 210th MeWhenI 🇻🇦 656 418 20ms 17 Nov 2021 211th dmrichwa 🇺🇸 654 149 10ms 28 Jan 2023 212th inventshah 652 174 2ms 12 Nov 2022 213th ovs-code 🇩🇪 648 128 578ms 6 Jul 2025 214th stefangimmillaro 647 202 351ms 6 Oct 2025 215th edsrzf 🇳🇿 645 248 41ms 9 days ago 216th albanian-laundromat 643 227 4ms 6 Jul 2025 217th MeWhenI 🇻🇦 641 152 10ms 28 Feb 2024 218th edsrzf 🇳🇿 641 199 3ms 9 days ago 219th stefangimmillaro 639 181 328ms 6 Oct 2025 220th ovs-code 🇩🇪 637 113 33ms 6 Jul 2025 221st MostParsingVex 637 459 28ms 16 Jan 2025 222nd MeWhenI 🇻🇦 634 131 345ms 13 Jul 2024 223rd stefangimmillaro 632 255 164ms 24 Jul 2023 224th emgordon154 631 241 6ms 29 Jun 2025 225th stefangimmillaro 628 227 104ms 3 Oct 2023 First Prev 151–225 of 448 Next Last