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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 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 Gray Code Decoder Gray Code Encoder 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Gray Code Decoder Gray Code Encoder 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 101st MeWhenI 🇻🇦 828 364 25ms 30 Sep 2021 102nd Steffan153 🇫🇮 827 154 444ms 11 Aug 2024 103rd kg583 🇺🇸 827 285 84ms 25 hours ago 104th Steffan153 🇫🇮 826 153 63ms 11 Aug 2024 105th MeWhenI 🇻🇦 826 290 31ms 6 Jun 2023 106th nwellnhof 🇩🇪 825 391 56ms 9 Jul 2022 107th MeWhenI 🇻🇦 822 251 6ms 28 Feb 2024 108th UnderKoen 🇳🇱 822 608 4ms 11 Nov 2024 109th MeWhenI 🇻🇦 819 145 406ms 19 Jun 2025 110th MeWhenI 🇻🇦 819 148 776ms 15 Sep 2025 111th MeWhenI 🇻🇦 818 146 5ms 28 Feb 2024 112th edsrzf 🇳🇿 816 185 124ms 11 days ago 113th primo-ppcg 🇹🇭 815 531 10ms 20 Jun 2025 114th emplv 🇱🇻 814 150 10ms 29 Apr 2022 115th Steffan153 🇫🇮 813 160 18ms 31 Jul 2024 115th Lv0Sys 🇵🇱 813 160 11ms 28 Feb 2026 117th MeWhenI 🇻🇦 813 204 147ms 28 Feb 2024 118th Steffan153 🇫🇮 811 147 138ms 11 Feb 2026 119th MeWhenI 🇻🇦 811 165 536ms 7 Nov 2025 120th annaproxy 811 347 118ms 18 Sep 2023 121st Steffan153 🇫🇮 809 148 598ms 31 Jul 2024 122nd nwellnhof 🇩🇪 809 193 345ms 24 Sep 2021 123rd jared-hughes 808 134 2ms 30 Jan 2023 124th sean-niemann 🇺🇸 805 148 147ms 29 Oct 2024 125th MeWhenI 🇻🇦 804 99 43ms 28 Feb 2024 126th Irratix 🇳🇱 803 152 10ms 6 May 2022 126th MeWhenI 🇻🇦 803 152 12ms 28 Feb 2024 126th vlpx 🇫🇮 803 152 10ms 1 Aug 2024 129th stefangimmillaro 803 221 40ms 31 Jul 2023 130th sean-niemann 🇺🇸 802 148 418ms 11 Aug 2024 130th Steffan153 🇫🇮 802 148 431ms 11 Aug 2024 132nd vang1ong7ang 802 219 169ms 93 mins ago 133rd jared-hughes 800 158 65ms 30 Jan 2023 134th MeWhenI 🇻🇦 799 223 3ms 28 Feb 2024 135th lifthrasiir 🇰🇷 798 84 2ms 6 Dec 2024 136th ryyyn 🇺🇸 798 163 19ms 9 Dec 2025 137th namelessiw 797 168 532ms 15 Nov 2025 137th Steffan153 🇫🇮 797 168 529ms 11 Feb 2026 139th snoozingnewt 🇨🇦 794 180 80ms 5 days ago 140th lynn 794 241 121ms 3 Feb 2023 141st pardouin 🇫🇷 793 126 1,486ms 14 Aug 2025 142nd GolfingSuccess 🇬🇷 793 164 18ms 18 Sep 2021 142nd 5cw 🇺🇸 793 164 10ms 8 May 2024 144th sean-niemann 🇺🇸 792 169 569ms 24 Sep 2025 145th emgordon154 792 398 1,208ms 4 Oct 2025 146th namelessiw 791 150 436ms 11 Aug 2024 147th Natanaelel 🇸🇪 788 85 2ms 12 Jan 2025 148th sean-niemann 🇺🇸 788 165 17ms 9 Mar 2025 149th MeWhenI 🇻🇦 787 152 491ms 24 May 2024 150th AlephSquirrel 787 247 6ms 27 Jan 2025 151st MeWhenI 🇻🇦 786 187 121ms 28 Feb 2024 152nd MeWhenI 🇻🇦 785 138 1ms 5 Jul 2024 153rd AlephSquirrel 784 166 13ms 10 Jun 2023 153rd bricknellj 784 166 18ms 3 Apr 2025 155th MeWhenI 🇻🇦 784 202 2ms 28 Feb 2024 156th pardouin 🇫🇷 782 122 37ms 22 Aug 2025 157th MeWhenI 🇻🇦 782 147 285ms 28 Feb 2024 158th sean-niemann 🇺🇸 782 153 507ms 9 Mar 2025 159th MeWhenI 🇻🇦 781 128 1,366ms 14 Nov 2022 160th Yax42 🇫🇷 781 152 395ms 24 Nov 2025 161st emplv 🇱🇻 781 153 5ms 10 Jan 2023 162nd edsrzf 🇳🇿 780 210 4ms 16 Dec 2025 163rd lynn 779 167 10ms 13 Feb 2023 164th adyache 🇺🇸 779 216 61ms 28 Aug 2023 165th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 166th hallvabo 🇳🇴 774 168 29ms 8 Feb 2022 167th Yax42 🇫🇷 774 173 756ms 17 Dec 2025 168th ovs-code 🇩🇪 773 140 1ms 10 Jul 2024 169th GolfingSuccess 🇬🇷 772 155 552ms 5 Aug 2025 170th MeWhenI 🇻🇦 772 188 390ms 28 Feb 2024 171st ovs-code 🇩🇪 771 164 440ms 10 Jul 2024 172nd scpchicken 🇵🇼 771 248 119ms 13 days ago 173rd rak1507 🇬🇧 770 87 2ms 31 Jan 2022 174th Steffan153 🇫🇮 770 124 38ms 31 Jul 2024 175th acotis 767 229 183ms 31 May 2025 176th MeWhenI 🇻🇦 766 165 441ms 28 Feb 2024 177th Seek64 🇩🇪 765 170 13ms 27 Nov 2025 178th rotary-o 🇯🇵 765 175 405ms 8 May 2023 179th edsrzf 🇳🇿 761 171 27ms 16 Dec 2025 180th MeWhenI 🇻🇦 761 233 40ms 13 May 2023 181st lynn 757 158 524ms 17 Feb 2024 181st AlephSquirrel 757 158 454ms 12 Jan 2025 181st kg583 🇺🇸 757 158 604ms 28 Feb 2026 184th MeWhenI 🇻🇦 757 181 23ms 28 Feb 2024 185th MeWhenI 🇻🇦 757 256 64ms 28 Feb 2024 186th SirBogman 🇺🇸 756 172 17ms 31 Jan 2024 187th MeWhenI 🇻🇦 753 157 1ms 28 Feb 2024 188th SirBogman 🇺🇸 752 168 426ms 2 Jan 2022 189th Irratix 🇳🇱 752 173 20ms 6 May 2022 190th SirBogman 🇺🇸 751 150 143ms 31 Jan 2024 191st SirBogman 🇺🇸 747 104 32ms 28 Nov 2023 192nd SirBogman 🇺🇸 747 145 2ms 24 Nov 2021 192nd KasperKivimaeki 🇫🇮 747 145 863ms 14 Nov 2025 194th sean-niemann 🇺🇸 747 212 2ms 23 Jun 2025 195th sean-niemann 🇺🇸 746 134 1,556ms 14 Aug 2025 196th MeWhenI 🇻🇦 746 149 412ms 28 Feb 2024 197th jared-hughes 745 164 9ms 9 Apr 2022 198th MeWhenI 🇻🇦 745 192 103ms 28 Feb 2024 199th Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 200th rucin93 🇵🇱 740 165 10ms 8 days ago First Prev 101–200 of 533 Next Last