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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 241st MeWhenI 🇻🇦 612 188 4ms 28 Feb 2024 242nd KatieLG 🇬🇧 611 136 412ms 28 Oct 2024 243rd dokutan 610 147 18ms 10 Sep 2025 244th MeWhenI 🇻🇦 607 176 189ms 4 Sep 2024 245th stefangimmillaro 605 159 1,268ms 20 Oct 2023 246th annaproxy 605 309 129ms 4 Sep 2022 247th emgordon154 603 162 12ms 7 Aug 2024 248th postie77 601 193 412ms 24 Mar 2023 249th error256 601 223 9ms 29 Jul 2024 250th Lv0Sys 🇵🇱 601 254 336ms 18 days ago 251st stefangimmillaro 599 195 4,512ms 12 Nov 2024 252nd rucin93 🇵🇱 598 150 18ms 31 May 2025 252nd Babafaba 598 150 17ms 29 Oct 2025 254th AlephSquirrel 597 247 5ms 27 Jan 2025 255th jared-hughes 595 164 9ms 9 Apr 2022 256th bac0id 592 208 487ms 25 Jun 2024 257th qpwoeirut 590 152 16ms 5 Oct 2025 258th MeWhenI 🇻🇦 589 147 275ms 28 Feb 2024 259th RaBa21 🇭🇺 586 153 17ms 31 Jul 2025 260th NewDefectus 🇮🇱 585 167 11ms 21 Sep 2021 261st MeWhenI 🇻🇦 582 191 1ms 28 Feb 2024 262nd scpchicken 🇵🇼 577 324 121ms 17 Mar 2023 263rd DialFrost 🇸🇬 575 201 4ms 18 Jan 2024 264th KatieLG 🇬🇧 574 170 9ms 5 Oct 2025 265th MeWhenI 🇻🇦 574 272 1,420ms 14 Jun 2023 266th wh3n3v3r 🇨🇿 571 157 16ms 14 Nov 2024 266th blaztoma 🇱🇹 571 157 15ms 28 Dec 2025 268th Babafaba 569 146 394ms 29 Oct 2025 268th dokutan 569 146 346ms 14 Feb 2026 270th bac0id 569 185 1ms 25 Jun 2024 271st SB-945 568 158 9ms 14 Mar 2024 271st robin-scragg 568 158 17ms 27 Aug 2025 273rd MeWhenI 🇻🇦 565 138 3ms 28 Feb 2024 274th lynn 565 303 159ms 31 Mar 2022 274th andersk 🇺🇸 565 303 229ms 1 Nov 2022 276th albanian-laundromat 561 160 17ms 27 Jun 2025 276th Lv0Sys 🇵🇱 561 160 10ms 18 days ago 278th bac0id 557 208 414ms 25 Jun 2024 279th jared-hughes 551 135 33ms 25 May 2022 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 122ms 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 10ms 30 Jun 2024 290th Lv0Sys 🇵🇱 537 182 16ms 18 days ago 292nd tayloia 🇬🇧 534 183 9ms 4 May 2023 293rd snoozingnewt 🇨🇦 534 302 136ms 20 Nov 2025 294th primo-ppcg 🇹🇭 530 131 38ms 28 Sep 2021 294th olleicua 🇺🇸 530 131 38ms 20 Feb 2025 296th Seek64 🇩🇪 528 170 10ms 27 Nov 2025 297th ovs-code 🇩🇪 526 151 818ms 10 Mar 2024 298th lynn 526 158 477ms 17 Feb 2024 298th AlephSquirrel 526 158 495ms 12 Jan 2025 300th edsrzf 🇳🇿 525 171 24ms 16 Dec 2025 301st DialFrost 🇸🇬 525 221 1ms 29 Jan 2024 302nd emgordon154 523 161 157ms 18 Oct 2024 303rd MichalMarsalek 🇨🇿 523 266 410ms 12 Oct 2023 304th Salutations45 522 187 10ms 15 Oct 2025 305th bac0id 519 275 121ms 25 Jun 2024 306th emplv 🇱🇻 517 163 201ms 28 Mar 2025 307th Natanaelel 🇸🇪 515 363 144ms 16 Jun 2025 308th retrohun 513 259 61ms 23 Nov 2022 309th blaztoma 🇱🇹 510 153 3ms 14 Dec 2025 310th bac0id 509 257 416ms 25 Jun 2024 311th prplz 🇦🇺 501 179 10ms 13 Jan 2024 312th lynn 500 96 44ms 3 Apr 2023 313th jerrandolph 499 306 290ms 25 Sep 2025 314th jared-hughes 498 180 16ms 9 Apr 2022 315th MeWhenI 🇻🇦 490 172 141ms 5 Jan 2025 316th Natanaelel 🇸🇪 489 142 57ms 18 Sep 2021 317th jared-hughes 486 143 60ms 10 Sep 2022 318th alexsave 486 201 14ms 3 Jan 2026 319th janbehrens 🇩🇪 485 238 5ms 4 Dec 2024 320th stefangimmillaro 473 147 60ms 12 May 2024 First Prev 241–320 of 472 Next Last