QR Decoder in all languages in chars. 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 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 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 Chars Time Submitted 241st stefangimmillaro 632 227 107ms 3 Oct 2023 242nd stefangimmillaro 632 273 164ms 17 Nov 2023 243rd ovs-code 🇩🇪 628 143 9ms 6 Jul 2025 244th jared-hughes 622 180 1ms 9 Apr 2022 245th AdrienHache 🇫🇷 618 188 500ms 25 Jul 2025 246th MeWhenI 🇻🇦 617 188 4ms 28 Feb 2024 247th ovs-code 🇩🇪 615 113 38ms 6 Jul 2025 248th KatieLG 🇬🇧 611 136 549ms 28 Oct 2024 249th dokutan 610 147 20ms 10 Sep 2025 250th annaproxy 608 309 129ms 4 Sep 2022 251st stefangimmillaro 607 159 1,493ms 20 Oct 2023 252nd targrik 606 192 5ms 2 days ago 253rd error256 606 223 8ms 29 Jul 2024 254th stefangimmillaro 605 195 2,634ms 12 Nov 2024 255th emgordon154 604 162 11ms 7 Aug 2024 256th Lv0Sys 🇵🇱 603 254 343ms 28 Feb 2026 257th postie77 602 193 406ms 24 Mar 2023 258th AlephSquirrel 601 247 6ms 27 Jan 2025 259th rucin93 🇵🇱 598 150 19ms 31 May 2025 259th Babafaba 598 150 18ms 29 Oct 2025 261st scpchicken 🇵🇼 597 131 4ms 2 hours ago 262nd jared-hughes 596 164 11ms 9 Apr 2022 263rd bac0id 594 208 456ms 25 Jun 2024 264th MeWhenI 🇻🇦 590 147 285ms 28 Feb 2024 265th qpwoeirut 590 152 19ms 5 Oct 2025 266th RaBa21 🇭🇺 587 153 17ms 31 Jul 2025 267th jusaka 586 109 3ms 7 days ago 268th MeWhenI 🇻🇦 586 191 1ms 28 Feb 2024 269th NewDefectus 🇮🇱 585 167 9ms 21 Sep 2021 270th DialFrost 🇸🇬 579 201 6ms 18 Jan 2024 271st KatieLG 🇬🇧 575 170 14ms 5 Oct 2025 272nd MeWhenI 🇻🇦 574 272 1,437ms 14 Jun 2023 273rd wh3n3v3r 🇨🇿 572 157 20ms 14 Nov 2024 273rd blaztoma 🇱🇹 572 157 16ms 28 Dec 2025 275th bac0id 571 185 1ms 25 Jun 2024 276th lynn 570 303 162ms 31 Mar 2022 276th andersk 🇺🇸 570 303 226ms 1 Nov 2022 278th Babafaba 569 146 365ms 29 Oct 2025 278th dokutan 569 146 456ms 14 Feb 2026 280th SB-945 568 158 11ms 14 Mar 2024 280th robin-scragg 568 158 18ms 27 Aug 2025 282nd MeWhenI 🇻🇦 566 138 3ms 28 Feb 2024 283rd jusaka 565 297 16ms 6 days ago 284th albanian-laundromat 🇺🇸 561 160 20ms 27 Jun 2025 284th Lv0Sys 🇵🇱 561 160 11ms 28 Feb 2026 286th jusaka 559 497 16ms 6 days ago 287th bac0id 558 208 383ms 25 Jun 2024 288th edsrzf 🇳🇿 552 210 4ms 16 Dec 2025 289th jared-hughes 551 135 33ms 25 May 2022 290th ryyyn 🇺🇸 551 163 19ms 9 Dec 2025 291st 5cw 🇺🇸 547 164 10ms 8 May 2024 292nd janAkali 🇷🇺 545 259 380ms 24 Mar 2026 293rd FlorianCassayre 🇫🇷 544 165 10ms 21 Oct 2023 293rd JOrE20 544 165 13ms 4 Dec 2025 295th jusaka 544 256 89ms 6 days ago 296th AlephSquirrel 541 166 13ms 10 Jun 2023 296th bricknellj 541 166 18ms 3 Apr 2025 298th MeWhenI 🇻🇦 538 148 418ms 28 Feb 2024 299th lynn 537 167 10ms 13 Feb 2023 300th KrausRaus 🇺🇸 537 182 10ms 30 Jun 2024 300th Lv0Sys 🇵🇱 537 182 11ms 28 Feb 2026 302nd snoozingnewt 🇨🇦 537 302 122ms 20 Nov 2025 303rd tayloia 🇬🇧 534 183 10ms 4 May 2023 304th jusaka 532 288 298ms 6 days ago 305th primo-ppcg 🇹🇭 531 131 36ms 28 Sep 2021 305th olleicua 🇺🇸 531 131 39ms 20 Feb 2025 307th MichalMarsalek 🇨🇿 530 266 398ms 12 Oct 2023 308th ovs-code 🇩🇪 528 151 800ms 10 Mar 2024 309th Seek64 🇩🇪 528 170 13ms 27 Nov 2025 310th DialFrost 🇸🇬 528 221 1ms 29 Jan 2024 311th lynn 526 158 524ms 17 Feb 2024 311th AlephSquirrel 526 158 454ms 12 Jan 2025 313th jusaka 526 273 119ms 6 days ago 314th emgordon154 525 161 133ms 18 Oct 2024 315th edsrzf 🇳🇿 525 171 27ms 16 Dec 2025 316th Salutations45 523 187 9ms 15 Oct 2025 317th bac0id 522 275 127ms 25 Jun 2024 318th emplv 🇱🇻 518 163 148ms 28 Mar 2025 319th Natanaelel 🇸🇪 518 363 144ms 16 Jun 2025 320th retrohun 516 259 61ms 23 Nov 2022 First Prev 241–320 of 528 Next Last