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 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 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 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 151st lynn 778 167 10ms 13 Feb 2023 152nd emplv 🇱🇻 777 153 4ms 10 Jan 2023 153rd hallvabo 🇳🇴 774 168 24ms 8 Feb 2022 154th ovs-code 🇩🇪 772 140 1ms 10 Jul 2024 155th GolfingSuccess 🇬🇷 772 155 532ms 5 Aug 2025 156th rak1507 🇬🇧 770 87 2ms 31 Jan 2022 157th ovs-code 🇩🇪 769 164 385ms 10 Jul 2024 158th Steffan153 🇫🇮 768 124 33ms 31 Jul 2024 159th edsrzf 🇳🇿 768 264 37ms 6 hours ago 160th MeWhenI 🇻🇦 765 165 383ms 28 Feb 2024 161st Seek64 🇩🇪 765 170 10ms 16 days ago 162nd rotary-o 🇯🇵 762 175 383ms 8 May 2023 163rd acotis 762 229 167ms 31 May 2025 164th MeWhenI 🇻🇦 761 188 350ms 28 Feb 2024 165th lynn 757 158 619ms 17 Feb 2024 165th AlephSquirrel 757 158 386ms 12 Jan 2025 167th MeWhenI 🇻🇦 757 256 71ms 28 Feb 2024 168th SirBogman 🇺🇸 756 172 16ms 31 Jan 2024 169th MeWhenI 🇻🇦 755 233 40ms 13 May 2023 170th MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 171st SirBogman 🇺🇸 751 168 380ms 2 Jan 2022 172nd Irratix 🇳🇱 751 173 20ms 6 May 2022 173rd SirBogman 🇺🇸 749 150 135ms 31 Jan 2024 174th MeWhenI 🇻🇦 748 157 1ms 28 Feb 2024 175th SirBogman 🇺🇸 747 104 32ms 28 Nov 2023 176th SirBogman 🇺🇸 745 145 2ms 24 Nov 2021 176th KasperKivimaeki 🇫🇮 745 145 885ms 14 Nov 2025 178th sean-niemann 🇺🇸 744 134 835ms 14 Aug 2025 179th MeWhenI 🇻🇦 744 149 351ms 28 Feb 2024 180th jared-hughes 743 164 9ms 9 Apr 2022 181st sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 182nd Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 183rd MeWhenI 🇻🇦 739 192 97ms 28 Feb 2024 184th dvargas46 🇺🇸 737 185 21ms 7 Apr 2023 185th MeWhenI 🇻🇦 736 239 1,735ms 22 Apr 2024 186th CLOStrophobic 🇮🇹 731 283 6ms 3 Mar 2025 187th NewDefectus 🇮🇱 730 167 9ms 21 Sep 2021 188th edsrzf 🇳🇿 730 178 26ms 4 Oct 2025 189th SirBogman 🇺🇸 729 164 438ms 31 Jan 2024 190th primo-ppcg 🇹🇭 727 131 32ms 28 Sep 2021 191st emplv 🇱🇻 727 163 144ms 28 Mar 2025 192nd prplz 🇦🇺 726 179 9ms 13 Jan 2024 193rd ovs-code 🇩🇪 725 153 759ms 10 Mar 2024 194th kg583 🇺🇸 725 224 4ms 24 Oct 2025 195th jared-hughes 722 180 16ms 9 Apr 2022 196th GrayJoKing 🇦🇺 720 156 139ms 2 Oct 2021 197th MeWhenI 🇻🇦 713 219 6ms 13 Aug 2024 198th inventshah 709 178 385ms 12 Nov 2022 199th MeWhenI 🇻🇦 708 138 3ms 28 Feb 2024 200th MeWhenI 🇻🇦 706 220 264ms 28 Feb 2024 201st edsrzf 🇳🇿 706 230 4ms 24 Oct 2025 202nd SirBogman 🇺🇸 704 163 249ms 31 Jan 2024 203rd blaztoma 🇱🇹 699 186 16ms 14 mins ago 204th inventshah 697 155 1ms 12 Nov 2022 205th jared-hughes 692 180 2ms 9 Apr 2022 206th MeWhenI 🇻🇦 689 172 134ms 5 Jan 2025 207th kg583 🇺🇸 688 189 16ms 31 Jan 2024 208th jacobly0 🇺🇸 687 256 1,867ms 22 Apr 2024 209th inventshah 684 190 16ms 12 Nov 2022 209th stefangimmillaro 684 190 24ms 8 Aug 2023 209th lifthrasiir 🇰🇷 684 190 18ms 16 Nov 2024 212th MeWhenI 🇻🇦 684 623 13ms 27 Jan 2025 213th pardouin 🇫🇷 681 176 3,332ms 20 May 2025 214th MeWhenI 🇻🇦 679 176 1ms 28 Feb 2024 215th primo-ppcg 🇹🇭 679 201 14ms 24 Jan 2022 216th stefangimmillaro 678 229 257ms 18 Oct 2023 216th edsrzf 🇳🇿 678 229 256ms 4 Oct 2025 218th Steffan153 🇫🇮 677 197 333ms 11 Aug 2024 219th NewDefectus 🇮🇱 675 160 2ms 28 Dec 2021 220th inventshah 675 174 1ms 12 Nov 2022 221st KrausRaus 🇺🇸 669 182 9ms 30 Jun 2024 222nd kg583 🇺🇸 668 179 528ms 17 Jul 2024 223rd jared-hughes 666 143 32ms 10 Sep 2022 224th tayloia 🇬🇧 666 183 9ms 4 May 2023 225th MeWhenI 🇻🇦 666 418 14ms 17 Nov 2021 First Prev 151–225 of 460 Next Last