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 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) 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 Connect Four 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 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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) 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 Connect Four 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 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 81st sean-niemann 🇺🇸 840 151 434ms 11 Aug 2024 82nd error256 839 231 824ms 29 Jul 2024 83rd Steffan153 🇫🇮 837 129 1ms 11 Aug 2024 84th MeWhenI 🇻🇦 834 156 9ms 30 Jul 2024 85th edsrzf 🇳🇿 834 243 39ms 17 Dec 2025 86th MeWhenI 🇻🇦 833 203 1,021ms 28 Feb 2024 87th MeWhenI 🇻🇦 833 232 5ms 17 Dec 2025 88th Shanethegamer 🇺🇸 833 254 112ms 2 Apr 2025 89th canissimia 🇦🇶 833 316 17ms 2 May 2022 90th sean-niemann 🇺🇸 831 130 1ms 11 Aug 2024 91st Steffan153 🇫🇮 831 176 125ms 11 Aug 2024 92nd IanUtley 831 335 21ms 20 Dec 2022 93rd sean-niemann 🇺🇸 830 152 443ms 17 Jul 2025 94th lynn 829 96 39ms 3 Apr 2023 95th saito-ta 🇯🇵 829 118 2ms 13 Feb 2023 96th blaztoma 🇱🇹 828 157 15ms 28 Dec 2025 97th MeWhenI 🇻🇦 828 216 15ms 7 Jan 2025 98th MeWhenI 🇻🇦 828 277 5ms 17 Oct 2021 99th Steffan153 🇫🇮 825 153 59ms 11 Aug 2024 100th nwellnhof 🇩🇪 825 391 56ms 9 Jul 2022 101st Steffan153 🇫🇮 824 154 444ms 11 Aug 2024 102nd kg583 🇺🇸 824 246 42ms 17 Dec 2025 103rd MeWhenI 🇻🇦 823 251 7ms 28 Feb 2024 104th MeWhenI 🇻🇦 818 145 399ms 19 Jun 2025 105th MeWhenI 🇻🇦 815 148 1,074ms 15 Sep 2025 106th MeWhenI 🇻🇦 815 364 25ms 30 Sep 2021 107th MeWhenI 🇻🇦 814 146 5ms 28 Feb 2024 108th emplv 🇱🇻 813 150 10ms 29 Apr 2022 109th Steffan153 🇫🇮 813 160 16ms 31 Jul 2024 109th Lv0Sys 🇵🇱 813 160 10ms 3 days ago 111th UnderKoen 🇳🇱 812 608 4ms 11 Nov 2024 112th MeWhenI 🇻🇦 810 165 471ms 7 Nov 2025 113th Steffan153 🇫🇮 808 147 149ms 20 days ago 114th Steffan153 🇫🇮 808 148 473ms 31 Jul 2024 115th MeWhenI 🇻🇦 808 204 138ms 28 Feb 2024 116th MeWhenI 🇻🇦 808 290 31ms 6 Jun 2023 117th nwellnhof 🇩🇪 807 193 288ms 24 Sep 2021 118th jared-hughes 806 134 2ms 30 Jan 2023 119th MeWhenI 🇻🇦 804 99 39ms 28 Feb 2024 120th sean-niemann 🇺🇸 803 148 139ms 29 Oct 2024 121st Irratix 🇳🇱 802 152 9ms 6 May 2022 121st MeWhenI 🇻🇦 802 152 8ms 28 Feb 2024 121st vlpx 🇫🇮 802 152 10ms 1 Aug 2024 124th annaproxy 802 347 119ms 18 Sep 2023 125th primo-ppcg 🇹🇭 802 531 10ms 20 Jun 2025 126th sean-niemann 🇺🇸 801 148 408ms 11 Aug 2024 126th Steffan153 🇫🇮 801 148 371ms 11 Aug 2024 128th jared-hughes 799 158 62ms 30 Jan 2023 129th lifthrasiir 🇰🇷 798 84 2ms 6 Dec 2024 130th ryyyn 🇺🇸 798 163 16ms 9 Dec 2025 131st namelessiw 796 168 473ms 15 Nov 2025 131st Steffan153 🇫🇮 796 168 346ms 20 days ago 133rd stefangimmillaro 796 221 40ms 31 Jul 2023 134th GolfingSuccess 🇬🇷 793 164 16ms 18 Sep 2021 134th 5cw 🇺🇸 793 164 10ms 8 May 2024 136th MeWhenI 🇻🇦 792 223 3ms 28 Feb 2024 137th emgordon154 792 398 1,509ms 4 Oct 2025 138th pardouin 🇫🇷 791 126 1,305ms 14 Aug 2025 139th namelessiw 791 150 399ms 11 Aug 2024 140th sean-niemann 🇺🇸 791 169 617ms 24 Sep 2025 141st lynn 790 241 121ms 3 Feb 2023 142nd Natanaelel 🇸🇪 788 85 2ms 12 Jan 2025 143rd sean-niemann 🇺🇸 788 165 18ms 9 Mar 2025 144th MeWhenI 🇻🇦 787 152 580ms 24 May 2024 145th MeWhenI 🇻🇦 783 138 1ms 5 Jul 2024 146th AlephSquirrel 783 166 14ms 10 Jun 2023 146th bricknellj 783 166 16ms 3 Apr 2025 148th pardouin 🇫🇷 782 122 35ms 22 Aug 2025 149th sean-niemann 🇺🇸 782 153 453ms 9 Mar 2025 150th MeWhenI 🇻🇦 782 187 117ms 28 Feb 2024 151st AlephSquirrel 782 247 5ms 27 Jan 2025 152nd MeWhenI 🇻🇦 781 147 246ms 28 Feb 2024 153rd Yax42 🇫🇷 780 152 377ms 24 Nov 2025 154th MeWhenI 🇻🇦 780 202 2ms 28 Feb 2024 155th MeWhenI 🇻🇦 779 128 1,266ms 14 Nov 2022 156th lynn 779 167 10ms 13 Feb 2023 157th adyache 🇺🇸 779 216 56ms 28 Aug 2023 158th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 159th emplv 🇱🇻 777 153 4ms 10 Jan 2023 160th hallvabo 🇳🇴 774 168 23ms 8 Feb 2022 First Prev 81–160 of 473 Next Last