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 151st hallvabo 🇳🇴 774 168 23ms 8 Feb 2022 152nd ovs-code 🇩🇪 772 140 1ms 10 Jul 2024 153rd GolfingSuccess 🇬🇷 771 155 578ms 5 Aug 2025 154th rak1507 🇬🇧 770 87 2ms 31 Jan 2022 155th ovs-code 🇩🇪 769 164 379ms 10 Jul 2024 156th Steffan153 🇫🇮 768 124 35ms 31 Jul 2024 157th MeWhenI 🇻🇦 765 165 390ms 28 Feb 2024 158th Seek64 🇩🇪 764 170 10ms 8 days ago 159th rotary-o 🇯🇵 762 175 313ms 8 May 2023 160th acotis 762 229 172ms 31 May 2025 161st MeWhenI 🇻🇦 761 188 323ms 28 Feb 2024 162nd ryyyn 🇺🇸 760 171 16ms 9 days ago 163rd MeWhenI 🇻🇦 757 256 68ms 28 Feb 2024 164th lynn 756 158 666ms 17 Feb 2024 164th AlephSquirrel 756 158 428ms 12 Jan 2025 166th SirBogman 🇺🇸 756 172 20ms 31 Jan 2024 167th MeWhenI 🇻🇦 755 233 49ms 13 May 2023 168th MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 169th SirBogman 🇺🇸 751 168 409ms 2 Jan 2022 170th Irratix 🇳🇱 751 173 21ms 6 May 2022 171st SirBogman 🇺🇸 749 150 112ms 31 Jan 2024 172nd MeWhenI 🇻🇦 748 157 2ms 28 Feb 2024 173rd SirBogman 🇺🇸 747 104 42ms 28 Nov 2023 174th SirBogman 🇺🇸 745 145 2ms 24 Nov 2021 174th KasperKivimaeki 🇫🇮 745 145 849ms 21 days ago 176th sean-niemann 🇺🇸 744 134 835ms 14 Aug 2025 177th MeWhenI 🇻🇦 744 149 351ms 28 Feb 2024 178th jared-hughes 743 164 9ms 9 Apr 2022 179th sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 180th Natanaelel 🇸🇪 740 105 47ms 20 Feb 2024 181st MeWhenI 🇻🇦 739 192 80ms 28 Feb 2024 182nd dvargas46 🇺🇸 737 185 21ms 7 Apr 2023 183rd MeWhenI 🇻🇦 736 239 1,682ms 22 Apr 2024 184th NewDefectus 🇮🇱 730 167 9ms 21 Sep 2021 185th edsrzf 🇳🇿 730 178 38ms 4 Oct 2025 186th SirBogman 🇺🇸 729 164 468ms 31 Jan 2024 187th primo-ppcg 🇹🇭 727 131 38ms 28 Sep 2021 188th emplv 🇱🇻 727 163 140ms 28 Mar 2025 189th prplz 🇦🇺 726 179 10ms 13 Jan 2024 190th edsrzf 🇳🇿 726 279 39ms 19 days ago 191st CLOStrophobic 🇮🇹 726 283 6ms 3 Mar 2025 192nd ovs-code 🇩🇪 725 153 766ms 10 Mar 2024 193rd kg583 🇺🇸 725 224 4ms 24 Oct 2025 194th jared-hughes 722 180 15ms 9 Apr 2022 195th GrayJoKing 🇦🇺 720 156 118ms 2 Oct 2021 196th MeWhenI 🇻🇦 713 219 6ms 13 Aug 2024 197th inventshah 709 178 381ms 12 Nov 2022 198th MeWhenI 🇻🇦 708 138 3ms 28 Feb 2024 199th MeWhenI 🇻🇦 706 220 262ms 28 Feb 2024 200th edsrzf 🇳🇿 706 230 3ms 24 Oct 2025 201st SirBogman 🇺🇸 704 163 220ms 31 Jan 2024 202nd inventshah 697 155 2ms 12 Nov 2022 203rd jared-hughes 692 180 2ms 9 Apr 2022 204th MeWhenI 🇻🇦 689 172 134ms 5 Jan 2025 205th kg583 🇺🇸 688 189 15ms 31 Jan 2024 206th jacobly0 🇺🇸 687 256 1,634ms 22 Apr 2024 207th inventshah 684 190 16ms 12 Nov 2022 207th stefangimmillaro 684 190 24ms 8 Aug 2023 207th lifthrasiir 🇰🇷 684 190 17ms 16 Nov 2024 210th MeWhenI 🇻🇦 684 623 13ms 27 Jan 2025 211th pardouin 🇫🇷 681 176 3,551ms 20 May 2025 212th MeWhenI 🇻🇦 679 176 1ms 28 Feb 2024 213th primo-ppcg 🇹🇭 679 201 15ms 24 Jan 2022 214th stefangimmillaro 678 229 257ms 18 Oct 2023 214th edsrzf 🇳🇿 678 229 259ms 4 Oct 2025 216th Steffan153 🇫🇮 677 197 298ms 11 Aug 2024 217th NewDefectus 🇮🇱 675 160 2ms 28 Dec 2021 218th inventshah 675 174 2ms 12 Nov 2022 219th KrausRaus 🇺🇸 669 182 10ms 30 Jun 2024 220th kg583 🇺🇸 668 179 555ms 17 Jul 2024 221st jared-hughes 666 143 35ms 10 Sep 2022 222nd tayloia 🇬🇧 666 183 9ms 4 May 2023 223rd MeWhenI 🇻🇦 666 418 14ms 17 Nov 2021 224th stefangimmillaro 661 202 351ms 6 Oct 2025 225th MarcMush 🇫🇷 660 168 586ms 14 Jan 2024 First Prev 151–225 of 457 Next Last