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 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 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 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 ><> 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 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 ><> 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 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 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 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 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 161st edsrzf 🇳🇿 773 210 4ms 16 Dec 2025 162nd ovs-code 🇩🇪 772 140 1ms 10 Jul 2024 163rd GolfingSuccess 🇬🇷 772 155 540ms 5 Aug 2025 164th rak1507 🇬🇧 770 87 2ms 31 Jan 2022 165th Steffan153 🇫🇮 769 124 41ms 31 Jul 2024 166th ovs-code 🇩🇪 769 164 408ms 10 Jul 2024 167th MeWhenI 🇻🇦 765 165 389ms 28 Feb 2024 168th Seek64 🇩🇪 765 170 10ms 27 Nov 2025 169th rotary-o 🇯🇵 764 175 404ms 8 May 2023 170th acotis 762 229 169ms 31 May 2025 171st MeWhenI 🇻🇦 761 188 350ms 28 Feb 2024 172nd edsrzf 🇳🇿 760 171 24ms 16 Dec 2025 173rd lynn 757 158 477ms 17 Feb 2024 173rd AlephSquirrel 757 158 535ms 12 Jan 2025 175th MeWhenI 🇻🇦 757 256 64ms 28 Feb 2024 176th SirBogman 🇺🇸 756 172 15ms 31 Jan 2024 177th MeWhenI 🇻🇦 755 233 40ms 13 May 2023 178th MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 179th kg583 🇺🇸 752 159 546ms 2 hours ago 180th SirBogman 🇺🇸 751 168 400ms 2 Jan 2022 181st Irratix 🇳🇱 751 173 21ms 6 May 2022 182nd SirBogman 🇺🇸 749 150 123ms 31 Jan 2024 183rd MeWhenI 🇻🇦 748 157 1ms 28 Feb 2024 184th SirBogman 🇺🇸 747 104 32ms 28 Nov 2023 185th SirBogman 🇺🇸 745 145 2ms 24 Nov 2021 185th KasperKivimaeki 🇫🇮 745 145 885ms 14 Nov 2025 187th sean-niemann 🇺🇸 744 134 1,256ms 14 Aug 2025 188th MeWhenI 🇻🇦 744 149 385ms 28 Feb 2024 189th jared-hughes 744 164 8ms 9 Apr 2022 190th sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 191st Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 192nd MeWhenI 🇻🇦 739 192 97ms 28 Feb 2024 193rd dvargas46 🇺🇸 737 185 24ms 7 Apr 2023 194th MeWhenI 🇻🇦 736 239 1,735ms 22 Apr 2024 195th NewDefectus 🇮🇱 730 167 9ms 21 Sep 2021 196th emplv 🇱🇻 729 163 146ms 28 Mar 2025 197th SirBogman 🇺🇸 729 164 467ms 31 Jan 2024 198th primo-ppcg 🇹🇭 728 131 34ms 28 Sep 2021 199th prplz 🇦🇺 726 179 11ms 13 Jan 2024 200th ovs-code 🇩🇪 725 153 819ms 10 Mar 2024 201st jared-hughes 722 180 17ms 9 Apr 2022 202nd GrayJoKing 🇦🇺 720 156 125ms 2 Oct 2021 203rd kg583 🇺🇸 718 181 16ms 2 hours ago 204th edsrzf 🇳🇿 713 218 299ms 16 Dec 2025 205th MeWhenI 🇻🇦 713 219 6ms 13 Aug 2024 206th MeWhenI 🇻🇦 709 138 3ms 28 Feb 2024 207th inventshah 709 178 420ms 12 Nov 2022 208th MeWhenI 🇻🇦 706 220 281ms 28 Feb 2024 209th SirBogman 🇺🇸 704 163 262ms 31 Jan 2024 210th inventshah 697 155 1ms 12 Nov 2022 211th CLOStrophobic 🇮🇹 694 283 6ms 3 Mar 2025 212th jared-hughes 692 180 1ms 9 Apr 2022 213th MeWhenI 🇻🇦 691 172 138ms 5 Jan 2025 214th jacobly0 🇺🇸 687 256 1,867ms 22 Apr 2024 215th inventshah 684 190 18ms 12 Nov 2022 215th stefangimmillaro 684 190 24ms 8 Aug 2023 215th lifthrasiir 🇰🇷 684 190 17ms 16 Nov 2024 218th MeWhenI 🇻🇦 684 623 13ms 27 Jan 2025 219th pardouin 🇫🇷 681 176 2,247ms 20 May 2025 220th MeWhenI 🇻🇦 679 176 1ms 28 Feb 2024 221st primo-ppcg 🇹🇭 679 201 14ms 24 Jan 2022 222nd stefangimmillaro 678 229 280ms 18 Oct 2023 223rd NewDefectus 🇮🇱 675 160 2ms 28 Dec 2021 224th inventshah 675 174 1ms 12 Nov 2022 225th KrausRaus 🇺🇸 670 182 9ms 30 Jun 2024 226th jared-hughes 667 143 33ms 10 Sep 2022 227th tayloia 🇬🇧 667 183 9ms 4 May 2023 228th MeWhenI 🇻🇦 666 418 14ms 17 Nov 2021 229th stefangimmillaro 662 202 451ms 6 Oct 2025 230th MarcMush 🇫🇷 660 168 614ms 14 Jan 2024 231st duckyluuk 🇳🇱 660 197 19ms 23 Jun 2024 232nd rucin93 🇵🇱 659 185 9ms 19 Jul 2024 233rd lifthrasiir 🇰🇷 657 182 496ms 2 Dec 2024 234th nullie 657 198 10ms 14 Jun 2022 234th emgordon154 657 198 9ms 16 Oct 2025 236th stefangimmillaro 655 181 415ms 6 Oct 2025 237th snoozingnewt 🇨🇦 653 199 17ms 6 Dec 2025 238th Salutations45 652 187 9ms 15 Oct 2025 239th MeWhenI 🇻🇦 652 191 1ms 28 Feb 2024 240th stefangimmillaro 649 147 36ms 12 May 2024 First Prev 161–240 of 469 Next Last