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 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 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 edsrzf 🇳🇿 780 210 4ms 16 Dec 2025 162nd lynn 779 167 10ms 13 Feb 2023 163rd adyache 🇺🇸 779 216 61ms 28 Aug 2023 164th MeWhenI 🇻🇦 779 223 3ms 20 Jul 2023 165th vang1ong7ang 777 226 168ms 12 hours ago 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 398ms 28 Feb 2024 171st ovs-code 🇩🇪 771 164 440ms 10 Jul 2024 172nd scpchicken 🇵🇼 771 248 119ms 11 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 140ms 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 88ms 28 Feb 2024 199th Natanaelel 🇸🇪 740 105 34ms 20 Feb 2024 200th rucin93 🇵🇱 740 165 10ms 7 days ago 201st dvargas46 🇺🇸 740 185 24ms 7 Apr 2023 202nd emplv 🇱🇻 731 163 148ms 28 Mar 2025 203rd NewDefectus 🇮🇱 731 167 10ms 21 Sep 2021 204th SirBogman 🇺🇸 730 164 571ms 31 Jan 2024 205th primo-ppcg 🇹🇭 729 131 36ms 28 Sep 2021 206th ovs-code 🇩🇪 727 153 800ms 10 Mar 2024 207th prplz 🇦🇺 727 179 10ms 13 Jan 2024 208th MeWhenI 🇻🇦 726 272 1,759ms 9 days ago 209th MostParsingVex 724 416 30ms 5 days ago 210th GrayJoKing 🇦🇺 723 156 155ms 2 Oct 2021 211th jared-hughes 723 180 17ms 9 Apr 2022 211th kg583 🇺🇸 723 180 18ms 28 Feb 2026 213th jusaka 721 418 65ms 9 days ago 214th MeWhenI 🇻🇦 719 219 5ms 13 Aug 2024 215th edsrzf 🇳🇿 717 218 335ms 16 Dec 2025 216th jusaka 717 245 164ms 16 days ago 217th MeWhenI 🇻🇦 710 138 3ms 28 Feb 2024 218th inventshah 710 178 445ms 12 Nov 2022 219th MeWhenI 🇻🇦 710 220 333ms 28 Feb 2024 220th SirBogman 🇺🇸 705 163 279ms 31 Jan 2024 221st jusaka 703 185 9ms 13 days ago 221st vang1ong7ang 703 185 11ms 14 hours ago 223rd plcc0 699 186 17ms 20 Feb 2026 224th inventshah 698 155 1ms 12 Nov 2022 225th jared-hughes 696 180 1ms 9 Apr 2022 226th MeWhenI 🇻🇦 695 623 13ms 27 Jan 2025 227th MeWhenI 🇻🇦 693 172 136ms 5 Jan 2025 228th pardouin 🇫🇷 689 176 2,694ms 20 May 2025 229th CLOStrophobic 🇮🇹 687 283 6ms 3 Mar 2025 230th inventshah 685 190 17ms 12 Nov 2022 230th stefangimmillaro 685 190 27ms 8 Aug 2023 230th lifthrasiir 🇰🇷 685 190 18ms 16 Nov 2024 233rd MeWhenI 🇻🇦 682 176 1ms 28 Feb 2024 234th stefangimmillaro 682 229 328ms 18 Oct 2023 235th primo-ppcg 🇹🇭 681 201 14ms 24 Jan 2022 236th inventshah 679 174 1ms 12 Nov 2022 237th NewDefectus 🇮🇱 677 160 1ms 28 Dec 2021 238th Flekay 🇩🇪 674 193 10ms 27 Mar 2026 239th MeWhenI 🇻🇦 673 418 14ms 17 Nov 2021 240th KrausRaus 🇺🇸 671 182 11ms 30 Jun 2024 First Prev 161–240 of 533 Next Last