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 Gray Code Decoder Gray Code Encoder 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) Taxicab Numbers 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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) Taxicab Numbers 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 101st Steffan153 🇫🇮 825 153 63ms 11 Aug 2024 102nd nwellnhof 🇩🇪 825 391 56ms 9 Jul 2022 103rd Steffan153 🇫🇮 824 154 444ms 11 Aug 2024 104th kg583 🇺🇸 824 246 42ms 17 Dec 2025 105th rucin93 🇵🇱 819 149 9ms 25 hours ago 106th MeWhenI 🇻🇦 818 145 406ms 19 Jun 2025 107th MeWhenI 🇻🇦 816 146 5ms 28 Feb 2024 108th edsrzf 🇳🇿 816 185 124ms 16 days ago 109th MeWhenI 🇻🇦 815 148 776ms 15 Sep 2025 110th MeWhenI 🇻🇦 815 364 25ms 30 Sep 2021 111th emplv 🇱🇻 814 150 9ms 29 Apr 2022 112th MeWhenI 🇻🇦 814 251 6ms 28 Feb 2024 113th Steffan153 🇫🇮 813 160 18ms 31 Jul 2024 113th Lv0Sys 🇵🇱 813 160 11ms 28 Feb 2026 115th UnderKoen 🇳🇱 812 608 4ms 11 Nov 2024 116th MeWhenI 🇻🇦 810 165 485ms 7 Nov 2025 117th kg583 🇺🇸 809 285 84ms 5 days ago 118th Steffan153 🇫🇮 808 147 138ms 11 Feb 2026 119th Steffan153 🇫🇮 808 148 598ms 31 Jul 2024 120th MeWhenI 🇻🇦 808 204 147ms 28 Feb 2024 121st MeWhenI 🇻🇦 808 290 31ms 6 Jun 2023 122nd jared-hughes 807 134 2ms 30 Jan 2023 123rd nwellnhof 🇩🇪 807 193 345ms 24 Sep 2021 124th vang1ong7ang 🇦🇶 807 217 160ms 3 days ago 125th MeWhenI 🇻🇦 804 99 43ms 28 Feb 2024 126th sean-niemann 🇺🇸 803 148 147ms 29 Oct 2024 127th Irratix 🇳🇱 803 152 10ms 6 May 2022 127th MeWhenI 🇻🇦 803 152 10ms 28 Feb 2024 127th vlpx 🇫🇮 803 152 10ms 1 Aug 2024 130th annaproxy 802 347 118ms 18 Sep 2023 131st primo-ppcg 🇹🇭 802 531 10ms 20 Jun 2025 132nd sean-niemann 🇺🇸 801 148 418ms 11 Aug 2024 132nd Steffan153 🇫🇮 801 148 431ms 11 Aug 2024 134th jared-hughes 799 158 65ms 30 Jan 2023 135th lifthrasiir 🇰🇷 798 84 2ms 6 Dec 2024 136th ryyyn 🇺🇸 798 163 19ms 9 Dec 2025 137th namelessiw 796 168 475ms 15 Nov 2025 137th Steffan153 🇫🇮 796 168 465ms 11 Feb 2026 139th stefangimmillaro 796 221 44ms 31 Jul 2023 140th GolfingSuccess 🇬🇷 793 164 18ms 18 Sep 2021 140th 5cw 🇺🇸 793 164 10ms 8 May 2024 142nd MeWhenI 🇻🇦 792 223 3ms 28 Feb 2024 143rd emgordon154 792 398 1,208ms 4 Oct 2025 144th pardouin 🇫🇷 791 126 1,286ms 14 Aug 2025 145th namelessiw 791 150 436ms 11 Aug 2024 146th sean-niemann 🇺🇸 791 169 486ms 24 Sep 2025 147th lynn 790 241 121ms 3 Feb 2023 148th Natanaelel 🇸🇪 788 85 2ms 12 Jan 2025 149th sean-niemann 🇺🇸 788 165 17ms 9 Mar 2025 150th snoozingnewt 🇨🇦 788 180 76ms 10 days ago 151st MeWhenI 🇻🇦 787 152 491ms 24 May 2024 152nd MeWhenI 🇻🇦 784 138 1ms 5 Jul 2024 153rd AlephSquirrel 784 166 13ms 10 Jun 2023 153rd bricknellj 784 166 18ms 3 Apr 2025 155th pardouin 🇫🇷 782 122 37ms 22 Aug 2025 156th sean-niemann 🇺🇸 782 153 507ms 9 Mar 2025 157th MeWhenI 🇻🇦 782 187 121ms 28 Feb 2024 158th AlephSquirrel 782 247 6ms 27 Jan 2025 159th MeWhenI 🇻🇦 781 147 285ms 28 Feb 2024 160th Yax42 🇫🇷 780 152 395ms 24 Nov 2025 161st MeWhenI 🇻🇦 780 202 2ms 28 Feb 2024 162nd MeWhenI 🇻🇦 779 128 1,270ms 14 Nov 2022 163rd emplv 🇱🇻 779 153 5ms 10 Jan 2023 164th lynn 779 167 10ms 13 Feb 2023 165th adyache 🇺🇸 779 216 61ms 28 Aug 2023 166th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 167th hallvabo 🇳🇴 774 168 29ms 8 Feb 2022 168th Yax42 🇫🇷 773 173 696ms 17 Dec 2025 169th edsrzf 🇳🇿 773 210 4ms 16 Dec 2025 170th ovs-code 🇩🇪 772 140 1ms 10 Jul 2024 171st GolfingSuccess 🇬🇷 772 155 552ms 5 Aug 2025 172nd rak1507 🇬🇧 770 87 2ms 31 Jan 2022 173rd Steffan153 🇫🇮 769 124 38ms 31 Jul 2024 174th ovs-code 🇩🇪 769 164 440ms 10 Jul 2024 175th MeWhenI 🇻🇦 769 188 390ms 28 Feb 2024 176th scpchicken 🇵🇼 767 248 119ms 17 days ago 177th MeWhenI 🇻🇦 765 165 441ms 28 Feb 2024 178th Seek64 🇩🇪 765 170 13ms 27 Nov 2025 179th rotary-o 🇯🇵 764 175 405ms 8 May 2023 180th acotis 764 229 183ms 31 May 2025 181st edsrzf 🇳🇿 761 171 27ms 16 Dec 2025 182nd lynn 757 158 524ms 17 Feb 2024 182nd AlephSquirrel 757 158 454ms 12 Jan 2025 182nd kg583 🇺🇸 757 158 604ms 28 Feb 2026 185th MeWhenI 🇻🇦 757 256 64ms 28 Feb 2024 186th SirBogman 🇺🇸 756 172 17ms 31 Jan 2024 187th MeWhenI 🇻🇦 755 233 44ms 13 May 2023 188th MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 189th Irratix 🇳🇱 752 173 20ms 6 May 2022 190th SirBogman 🇺🇸 751 168 426ms 2 Jan 2022 191st SirBogman 🇺🇸 749 150 143ms 31 Jan 2024 192nd SirBogman 🇺🇸 748 104 32ms 28 Nov 2023 193rd MeWhenI 🇻🇦 748 157 1ms 28 Feb 2024 194th SirBogman 🇺🇸 746 145 2ms 24 Nov 2021 194th KasperKivimaeki 🇫🇮 746 145 863ms 14 Nov 2025 196th sean-niemann 🇺🇸 744 134 1,329ms 14 Aug 2025 197th MeWhenI 🇻🇦 744 149 412ms 28 Feb 2024 198th jared-hughes 744 164 13ms 9 Apr 2022 199th sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 200th Natanaelel 🇸🇪 741 105 34ms 20 Feb 2024 First Prev 101–200 of 485 Next Last