QR Decoder in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 226th MeWhenI 🇻🇦 652 191 2ms 28 Feb 2024 227th Salutations45 651 187 10ms 8 days ago 228th stefangimmillaro 648 147 41ms 12 May 2024 229th emgordon154 648 241 6ms 29 Jun 2025 230th MostParsingVex 646 459 28ms 16 Jan 2025 231st duckyluuk 🇳🇱 645 185 1,333ms 23 Jun 2024 232nd error256 645 329 8ms 29 Jul 2024 233rd stefangimmillaro 644 227 108ms 3 Oct 2023 234th emgordon154 642 186 880ms 12 Apr 2025 235th lynn 642 249 1,294ms 25 Oct 2021 236th stefangimmillaro 642 255 189ms 24 Jul 2023 237th SirBogman 🇺🇸 640 149 38ms 31 Jan 2024 237th tatzyr 🇯🇵 640 149 34ms 10 Mar 2025 239th stefangimmillaro 639 273 186ms 17 Nov 2023 240th orthoplex 🇨🇽 637 204 17ms 13 Oct 2021 241st dcgjb 634 181 849ms 30 Jan 2024 242nd jakobkordez 🇸🇮 634 205 20ms 30 Oct 2022 243rd MeWhenI 🇻🇦 631 176 139ms 4 Sep 2024 244th AdrienHache 🇫🇷 629 188 362ms 25 Jul 2025 245th stefangimmillaro 627 159 1,169ms 20 Oct 2023 246th annaproxy 627 207 10ms 6 May 2022 247th StefanHabel 🇨🇦 624 208 12ms 8 Apr 2024 248th DialFrost 🇸🇬 616 180 661ms 18 Jan 2024 249th OllieBoyne 🇬🇧 616 211 11ms 19 Aug 2022 250th annaproxy 616 309 146ms 4 Sep 2022 251st stefangimmillaro 614 195 2,692ms 12 Nov 2024 252nd postie77 613 193 362ms 24 Mar 2023 253rd Artemis21 🇬🇧 613 212 16ms 3 Jan 2025 254th bac0id 607 208 430ms 25 Jun 2024 255th InigoK 🇺🇸 607 214 17ms 22 Sep 2025 256th rucin93 🇵🇱 604 196 180ms 5 Jan 2025 257th mathisfun271 604 215 10ms 12 Feb 2024 257th anter69 🇭🇺 604 215 21ms 7 Jul 2025 259th TFeld00 🇩🇰 601 216 24ms 19 May 2022 259th andrewjc2000 601 216 29ms 15 May 2025 261st weliveinhell 🇭🇹 600 203 10ms 19 Jul 2024 261st helbling 🇨🇭 600 203 9ms 6 Sep 2024 263rd neel11235813 594 201 1,219ms 1 Apr 2024 264th ndren 593 219 34ms 22 Nov 2023 264th neel11235813 593 219 22ms 1 Apr 2024 266th DialFrost 🇸🇬 591 201 6ms 18 Jan 2024 267th voytxt 🇨🇿 591 206 9ms 15 Aug 2025 268th DialFrost 🇸🇬 588 221 19ms 18 Jan 2024 268th BREMAUCY 🇫🇷 588 221 21ms 22 Aug 2025 270th MeWhenI 🇻🇦 588 272 1,345ms 14 Jun 2023 271st scpchicken 🇵🇼 587 324 149ms 17 Mar 2023 272nd KatieLG 🇬🇧 585 222 11ms 7 Jul 2024 272nd ryyyn 🇺🇸 585 222 19ms 7 days ago 274th bac0id 584 185 2ms 25 Jun 2024 275th dmrichwa 🇺🇸 577 211 9ms 17 Jun 2023 276th jared-hughes 576 135 40ms 25 May 2022 277th lynn 576 303 179ms 31 Mar 2022 278th guilhem-roy 🇫🇷 572 227 10ms 3 Mar 2022 279th antimon2 🇯🇵 569 195 1,274ms 8 Mar 2024 280th bac0id 569 208 361ms 25 Jun 2024 281st scpchicken 🇵🇼 567 229 17ms 13 Oct 2023 282nd janbehrens 🇩🇪 559 218 9ms 4 Dec 2024 283rd stu303 557 233 11ms 20 Jul 2022 284th CaedenHarper 🇨🇦 553 218 1,248ms 21 days ago 285th davecame 550 236 18ms 19 Mar 2024 286th DialFrost 🇸🇬 548 221 2ms 29 Jan 2024 287th m42km 546 238 19ms 12 Nov 2023 288th CaedenHarper 🇨🇦 541 240 11ms 10 Aug 2025 289th KatieLG 🇬🇧 538 222 796ms 27 Oct 2024 290th MichalMarsalek 🇨🇿 538 266 398ms 12 Oct 2023 291st commandblockguy 🇺🇸 537 242 13ms 27 Sep 2023 292nd dokutan 535 243 17ms 9 Sep 2025 293rd olleicua 🇺🇸 532 179 41ms 20 Feb 2025 294th bac0id 532 275 133ms 25 Jun 2024 295th alemelis 530 245 18ms 27 Aug 2024 295th CornerMercury 🇬🇧 530 245 21ms 2 Mar 2025 297th m42km 528 226 1,094ms 4 Feb 2024 298th retrohun 527 259 58ms 23 Nov 2022 299th FlorianCassayre 🇫🇷 526 247 13ms 21 Oct 2023 299th janbehrens 🇩🇪 526 247 11ms 4 Dec 2024 First Prev 226–300 of 441 Next Last