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 Alphabetic Numbers 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab 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 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 Alphabetic Numbers 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 161st hallvabo 🇳🇴 774 168 23ms 8 Feb 2022 162nd Yax42 🇫🇷 773 173 429ms 17 Dec 2025 163rd edsrzf 🇳🇿 773 210 4ms 16 Dec 2025 164th ovs-code 🇩🇪 772 140 1ms 10 Jul 2024 165th GolfingSuccess 🇬🇷 772 155 482ms 5 Aug 2025 166th rak1507 🇬🇧 770 87 2ms 31 Jan 2022 167th Steffan153 🇫🇮 769 124 39ms 31 Jul 2024 168th ovs-code 🇩🇪 769 164 430ms 10 Jul 2024 169th MeWhenI 🇻🇦 765 165 439ms 28 Feb 2024 170th Seek64 🇩🇪 765 170 10ms 27 Nov 2025 171st rotary-o 🇯🇵 764 175 404ms 8 May 2023 172nd acotis 762 229 176ms 31 May 2025 173rd MeWhenI 🇻🇦 761 188 375ms 28 Feb 2024 174th edsrzf 🇳🇿 760 171 24ms 16 Dec 2025 175th lynn 757 158 477ms 17 Feb 2024 175th AlephSquirrel 757 158 495ms 12 Jan 2025 175th kg583 🇺🇸 757 158 457ms 19 days ago 178th MeWhenI 🇻🇦 757 256 64ms 28 Feb 2024 179th SirBogman 🇺🇸 756 172 15ms 31 Jan 2024 180th MeWhenI 🇻🇦 755 233 40ms 13 May 2023 181st MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 182nd Irratix 🇳🇱 752 173 21ms 6 May 2022 183rd SirBogman 🇺🇸 751 168 402ms 2 Jan 2022 184th SirBogman 🇺🇸 749 150 136ms 31 Jan 2024 185th MeWhenI 🇻🇦 748 157 1ms 28 Feb 2024 186th SirBogman 🇺🇸 747 104 32ms 28 Nov 2023 187th SirBogman 🇺🇸 745 145 2ms 24 Nov 2021 187th KasperKivimaeki 🇫🇮 745 145 881ms 14 Nov 2025 189th sean-niemann 🇺🇸 744 134 1,256ms 14 Aug 2025 190th MeWhenI 🇻🇦 744 149 381ms 28 Feb 2024 191st jared-hughes 744 164 8ms 9 Apr 2022 192nd sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 193rd Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 194th MeWhenI 🇻🇦 739 192 88ms 28 Feb 2024 195th dvargas46 🇺🇸 737 185 24ms 7 Apr 2023 196th MeWhenI 🇻🇦 736 239 1,735ms 22 Apr 2024 197th NewDefectus 🇮🇱 730 167 10ms 21 Sep 2021 198th emplv 🇱🇻 729 163 166ms 28 Mar 2025 199th SirBogman 🇺🇸 729 164 467ms 31 Jan 2024 200th primo-ppcg 🇹🇭 728 131 36ms 28 Sep 2021 201st prplz 🇦🇺 727 179 10ms 13 Jan 2024 202nd ovs-code 🇩🇪 725 153 818ms 10 Mar 2024 203rd jared-hughes 722 180 16ms 9 Apr 2022 203rd kg583 🇺🇸 722 180 16ms 19 days ago 205th GrayJoKing 🇦🇺 720 156 153ms 2 Oct 2021 206th snoozingnewt 🇨🇦 716 228 126ms 19 days ago 207th edsrzf 🇳🇿 715 218 305ms 16 Dec 2025 208th MeWhenI 🇻🇦 713 219 5ms 13 Aug 2024 209th MeWhenI 🇻🇦 709 138 3ms 28 Feb 2024 210th inventshah 709 178 410ms 12 Nov 2022 211th MeWhenI 🇻🇦 708 220 287ms 28 Feb 2024 212th SirBogman 🇺🇸 704 163 283ms 31 Jan 2024 213th plcc0 699 186 17ms 27 days ago 214th inventshah 697 155 1ms 12 Nov 2022 215th jared-hughes 692 180 1ms 9 Apr 2022 216th MeWhenI 🇻🇦 691 172 141ms 5 Jan 2025 217th jacobly0 🇺🇸 687 256 1,867ms 22 Apr 2024 218th pardouin 🇫🇷 684 176 2,824ms 20 May 2025 219th inventshah 684 190 17ms 12 Nov 2022 219th stefangimmillaro 684 190 24ms 8 Aug 2023 219th lifthrasiir 🇰🇷 684 190 17ms 16 Nov 2024 222nd MeWhenI 🇻🇦 684 623 13ms 27 Jan 2025 223rd CLOStrophobic 🇮🇹 683 283 6ms 3 Mar 2025 224th stefangimmillaro 680 229 293ms 18 Oct 2023 225th MeWhenI 🇻🇦 679 176 1ms 28 Feb 2024 226th primo-ppcg 🇹🇭 679 201 14ms 24 Jan 2022 227th NewDefectus 🇮🇱 675 160 2ms 28 Dec 2021 228th inventshah 675 174 1ms 12 Nov 2022 229th KrausRaus 🇺🇸 670 182 10ms 30 Jun 2024 229th Lv0Sys 🇵🇱 670 182 25ms 19 days ago 231st jared-hughes 667 143 37ms 10 Sep 2022 232nd tayloia 🇬🇧 667 183 10ms 4 May 2023 233rd MeWhenI 🇻🇦 666 418 14ms 17 Nov 2021 234th stefangimmillaro 662 202 451ms 6 Oct 2025 235th MarcMush 🇫🇷 660 168 614ms 14 Jan 2024 236th duckyluuk 🇳🇱 660 197 18ms 23 Jun 2024 237th rucin93 🇵🇱 659 185 17ms 19 Jul 2024 238th lifthrasiir 🇰🇷 657 182 431ms 2 Dec 2024 239th nullie 657 198 10ms 14 Jun 2022 239th emgordon154 657 198 9ms 16 Oct 2025 First Prev 161–240 of 475 Next Last