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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 161st rak1507 🇬🇧 770 87 2ms 31 Jan 2022 162nd ovs-code 🇩🇪 769 164 447ms 10 Jul 2024 163rd Steffan153 🇫🇮 768 124 41ms 31 Jul 2024 164th MeWhenI 🇻🇦 765 165 527ms 28 Feb 2024 165th Seek64 🇩🇪 765 170 10ms 21 days ago 166th rotary-o 🇯🇵 764 175 383ms 8 May 2023 167th acotis 762 229 167ms 31 May 2025 168th MeWhenI 🇻🇦 761 188 350ms 28 Feb 2024 169th edsrzf 🇳🇿 760 171 23ms 2 days ago 170th lynn 757 158 619ms 17 Feb 2024 170th AlephSquirrel 757 158 386ms 12 Jan 2025 172nd MeWhenI 🇻🇦 757 256 71ms 28 Feb 2024 173rd SirBogman 🇺🇸 756 172 16ms 31 Jan 2024 174th MeWhenI 🇻🇦 755 233 40ms 13 May 2023 175th MeWhenI 🇻🇦 754 181 23ms 28 Feb 2024 176th SirBogman 🇺🇸 751 168 408ms 2 Jan 2022 177th Irratix 🇳🇱 751 173 20ms 6 May 2022 178th SirBogman 🇺🇸 749 150 135ms 31 Jan 2024 179th MeWhenI 🇻🇦 748 157 1ms 28 Feb 2024 180th SirBogman 🇺🇸 747 104 32ms 28 Nov 2023 181st SirBogman 🇺🇸 745 145 2ms 24 Nov 2021 181st KasperKivimaeki 🇫🇮 745 145 885ms 14 Nov 2025 183rd sean-niemann 🇺🇸 744 134 835ms 14 Aug 2025 184th MeWhenI 🇻🇦 744 149 554ms 28 Feb 2024 185th jared-hughes 743 164 9ms 9 Apr 2022 186th sean-niemann 🇺🇸 743 212 2ms 23 Jun 2025 187th Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 188th MeWhenI 🇻🇦 739 192 97ms 28 Feb 2024 189th dvargas46 🇺🇸 737 185 25ms 7 Apr 2023 190th MeWhenI 🇻🇦 736 239 1,735ms 22 Apr 2024 191st NewDefectus 🇮🇱 730 167 9ms 21 Sep 2021 192nd SirBogman 🇺🇸 729 164 438ms 31 Jan 2024 193rd primo-ppcg 🇹🇭 727 131 36ms 28 Sep 2021 194th emplv 🇱🇻 727 163 144ms 28 Mar 2025 195th prplz 🇦🇺 726 179 9ms 13 Jan 2024 196th ovs-code 🇩🇪 725 153 989ms 10 Mar 2024 197th jared-hughes 722 180 16ms 9 Apr 2022 198th GrayJoKing 🇦🇺 720 156 139ms 2 Oct 2021 199th edsrzf 🇳🇿 713 218 293ms 47 hours ago 200th MeWhenI 🇻🇦 713 219 6ms 13 Aug 2024 201st MeWhenI 🇻🇦 709 138 3ms 28 Feb 2024 202nd inventshah 709 178 489ms 12 Nov 2022 203rd MeWhenI 🇻🇦 706 220 264ms 28 Feb 2024 204th SirBogman 🇺🇸 704 163 249ms 31 Jan 2024 205th blaztoma 🇱🇹 703 185 15ms 4 days ago 206th inventshah 697 155 1ms 12 Nov 2022 207th CLOStrophobic 🇮🇹 694 283 6ms 3 Mar 2025 208th jared-hughes 692 180 2ms 9 Apr 2022 209th MeWhenI 🇻🇦 689 172 134ms 5 Jan 2025 210th kg583 🇺🇸 688 189 16ms 31 Jan 2024 211th jacobly0 🇺🇸 687 256 1,867ms 22 Apr 2024 212th inventshah 684 190 16ms 12 Nov 2022 212th stefangimmillaro 684 190 24ms 8 Aug 2023 212th lifthrasiir 🇰🇷 684 190 18ms 16 Nov 2024 215th MeWhenI 🇻🇦 684 623 13ms 27 Jan 2025 216th pardouin 🇫🇷 681 176 4,212ms 20 May 2025 217th MeWhenI 🇻🇦 679 176 1ms 28 Feb 2024 218th primo-ppcg 🇹🇭 679 201 14ms 24 Jan 2022 219th Steffan153 🇫🇮 678 197 333ms 11 Aug 2024 220th stefangimmillaro 678 229 257ms 18 Oct 2023 221st NewDefectus 🇮🇱 675 160 2ms 28 Dec 2021 222nd inventshah 675 174 1ms 12 Nov 2022 223rd KrausRaus 🇺🇸 669 182 9ms 30 Jun 2024 224th kg583 🇺🇸 668 179 528ms 17 Jul 2024 225th jared-hughes 666 143 36ms 10 Sep 2022 226th tayloia 🇬🇧 666 183 9ms 4 May 2023 227th MeWhenI 🇻🇦 666 418 14ms 17 Nov 2021 228th stefangimmillaro 662 202 437ms 6 Oct 2025 229th MarcMush 🇫🇷 660 168 612ms 14 Jan 2024 230th duckyluuk 🇳🇱 660 197 17ms 23 Jun 2024 231st rucin93 🇵🇱 659 185 9ms 19 Jul 2024 232nd lifthrasiir 🇰🇷 657 182 348ms 2 Dec 2024 233rd nullie 656 198 9ms 14 Jun 2022 233rd emgordon154 656 198 10ms 16 Oct 2025 235th stefangimmillaro 655 181 354ms 6 Oct 2025 236th snoozingnewt 🇨🇦 653 199 15ms 11 days ago 237th Salutations45 652 187 9ms 15 Oct 2025 238th MeWhenI 🇻🇦 652 191 2ms 28 Feb 2024 239th stefangimmillaro 648 147 40ms 12 May 2024 240th emgordon154 648 241 6ms 29 Jun 2025 First Prev 161–240 of 463 Next Last