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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 Chars Time Submitted 241st dokutan 610 147 18ms 10 Sep 2025 242nd snoozingnewt 🇨🇦 608 250 108ms 7 Dec 2025 243rd MeWhenI 🇻🇦 607 176 142ms 4 Sep 2024 244th stefangimmillaro 605 159 1,268ms 20 Oct 2023 245th annaproxy 605 309 129ms 4 Sep 2022 246th emgordon154 603 162 10ms 7 Aug 2024 247th postie77 601 193 406ms 24 Mar 2023 248th AlephSquirrel 600 247 5ms 27 Jan 2025 249th rucin93 🇵🇱 598 150 18ms 31 May 2025 249th Babafaba 598 150 17ms 29 Oct 2025 251st jared-hughes 595 164 10ms 9 Apr 2022 252nd stefangimmillaro 595 195 2,511ms 12 Nov 2024 253rd bac0id 592 208 394ms 25 Jun 2024 254th qpwoeirut 590 152 16ms 5 Oct 2025 255th MeWhenI 🇻🇦 589 147 246ms 28 Feb 2024 256th RaBa21 🇭🇺 586 153 17ms 31 Jul 2025 257th NewDefectus 🇮🇱 585 167 10ms 21 Sep 2021 258th MeWhenI 🇻🇦 582 191 1ms 28 Feb 2024 259th Steffan153 🇫🇮 581 124 37ms 31 Jul 2024 260th scpchicken 🇵🇼 577 324 121ms 17 Mar 2023 261st DialFrost 🇸🇬 575 201 4ms 18 Jan 2024 262nd KatieLG 🇬🇧 574 170 10ms 5 Oct 2025 263rd MeWhenI 🇻🇦 574 272 1,356ms 14 Jun 2023 264th wh3n3v3r 🇨🇿 571 157 16ms 14 Nov 2024 264th blaztoma 🇱🇹 571 157 15ms 28 Dec 2025 266th Babafaba 569 146 394ms 29 Oct 2025 266th dokutan 569 146 346ms 5 days ago 268th bac0id 569 185 1ms 25 Jun 2024 269th SB-945 568 158 9ms 14 Mar 2024 269th robin-scragg 568 158 17ms 27 Aug 2025 271st MeWhenI 🇻🇦 565 138 3ms 28 Feb 2024 272nd lynn 565 303 154ms 31 Mar 2022 272nd andersk 🇺🇸 565 303 216ms 1 Nov 2022 274th Steffan153 🇫🇮 561 148 473ms 31 Jul 2024 275th albanian-laundromat 561 160 17ms 27 Jun 2025 276th bac0id 557 208 368ms 25 Jun 2024 277th jared-hughes 551 135 33ms 25 May 2022 278th primo-ppcg 🇹🇭 550 131 34ms 28 Sep 2021 278th olleicua 🇺🇸 550 131 36ms 20 Feb 2025 280th ryyyn 🇺🇸 550 163 16ms 9 Dec 2025 281st edsrzf 🇳🇿 548 210 4ms 16 Dec 2025 282nd 5cw 🇺🇸 547 164 10ms 8 May 2024 283rd FlorianCassayre 🇫🇷 544 165 10ms 21 Oct 2023 283rd JOrE20 544 165 10ms 4 Dec 2025 285th blaztoma 🇱🇹 541 281 129ms 28 Nov 2025 286th AlephSquirrel 540 166 14ms 10 Jun 2023 286th bricknellj 540 166 16ms 3 Apr 2025 288th MeWhenI 🇻🇦 537 148 381ms 28 Feb 2024 289th lynn 537 167 10ms 13 Feb 2023 290th KrausRaus 🇺🇸 537 182 9ms 30 Jun 2024 291st tayloia 🇬🇧 534 183 10ms 4 May 2023 292nd snoozingnewt 🇨🇦 534 302 115ms 20 Nov 2025 293rd Seek64 🇩🇪 528 170 10ms 27 Nov 2025 294th ovs-code 🇩🇪 526 151 818ms 10 Mar 2024 295th lynn 526 158 477ms 17 Feb 2024 295th AlephSquirrel 526 158 495ms 12 Jan 2025 297th edsrzf 🇳🇿 525 171 24ms 16 Dec 2025 298th DialFrost 🇸🇬 525 221 1ms 29 Jan 2024 299th emgordon154 523 161 144ms 18 Oct 2024 300th MichalMarsalek 🇨🇿 523 266 396ms 12 Oct 2023 301st Salutations45 522 187 10ms 15 Oct 2025 302nd bac0id 519 275 123ms 25 Jun 2024 303rd emplv 🇱🇻 517 163 146ms 28 Mar 2025 304th Natanaelel 🇸🇪 515 363 144ms 16 Jun 2025 305th retrohun 513 259 61ms 23 Nov 2022 306th blaztoma 🇱🇹 510 153 3ms 14 Dec 2025 307th bac0id 509 257 416ms 25 Jun 2024 308th Natanaelel 🇸🇪 508 142 34ms 18 Sep 2021 309th jared-hughes 504 143 33ms 10 Sep 2022 310th prplz 🇦🇺 501 179 10ms 13 Jan 2024 311th lynn 500 96 39ms 3 Apr 2023 312th jared-hughes 498 180 16ms 9 Apr 2022 313th jerrandolph 497 306 293ms 25 Sep 2025 314th stefangimmillaro 490 147 36ms 12 May 2024 315th MeWhenI 🇻🇦 490 172 137ms 5 Jan 2025 316th alexsave 486 201 9ms 3 Jan 2026 317th janbehrens 🇩🇪 485 238 5ms 4 Dec 2024 318th inventshah 472 190 17ms 12 Nov 2022 318th stefangimmillaro 472 190 24ms 8 Aug 2023 320th p-vf 🇨🇭 471 246 366ms 21 Nov 2021 First Prev 241–320 of 468 Next Last