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 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 Bytes Time Submitted 241st nullie 657 198 10ms 14 Jun 2022 241st emgordon154 657 198 9ms 16 Oct 2025 243rd stefangimmillaro 655 181 384ms 6 Oct 2025 244th snoozingnewt 🇨🇦 654 199 17ms 6 Dec 2025 245th MeWhenI 🇻🇦 653 170 133ms 9 days ago 246th Salutations45 653 187 9ms 15 Oct 2025 247th MeWhenI 🇻🇦 652 191 1ms 28 Feb 2024 248th stefangimmillaro 649 147 38ms 12 May 2024 249th emgordon154 648 241 6ms 29 Jun 2025 250th stefangimmillaro 647 255 135ms 24 Jul 2023 251st duckyluuk 🇳🇱 646 185 617ms 23 Jun 2024 252nd MostParsingVex 646 459 26ms 16 Jan 2025 253rd stefangimmillaro 644 227 113ms 3 Oct 2023 254th emgordon154 643 186 561ms 12 Apr 2025 255th stefangimmillaro 643 273 162ms 17 Nov 2023 256th lynn 642 249 1,351ms 25 Oct 2021 257th SirBogman 🇺🇸 640 149 38ms 31 Jan 2024 257th tatzyr 🇯🇵 640 149 37ms 10 Mar 2025 259th blaztoma 🇱🇹 639 153 3ms 14 Dec 2025 260th orthoplex 🇨🇽 638 204 17ms 13 Oct 2021 261st jakobkordez 🇸🇮 635 205 17ms 30 Oct 2022 262nd dcgjb 634 181 884ms 30 Jan 2024 263rd AdrienHache 🇫🇷 631 188 398ms 25 Jul 2025 264th annaproxy 628 207 10ms 6 May 2022 264th StefanHabel 🇨🇦 628 207 11ms 27 days ago 266th stefangimmillaro 627 159 1,268ms 20 Oct 2023 267th snoozingnewt 🇨🇦 626 191 523ms 6 Dec 2025 268th error256 621 329 8ms 29 Jul 2024 269th stefangimmillaro 620 195 2,757ms 12 Nov 2024 270th DialFrost 🇸🇬 616 180 636ms 18 Jan 2024 271st OllieBoyne 🇬🇧 616 211 10ms 19 Aug 2022 272nd annaproxy 616 309 129ms 4 Sep 2022 273rd postie77 614 193 389ms 24 Mar 2023 274th Artemis21 🇬🇧 614 212 16ms 3 Jan 2025 275th voytxt 🇨🇿 613 199 10ms 3 days ago 276th Lv0Sys 🇵🇱 613 254 336ms 28 Feb 2026 277th InigoK 🇺🇸 608 214 18ms 22 Sep 2025 278th alexsave 607 201 9ms 3 Jan 2026 279th bac0id 607 208 430ms 25 Jun 2024 280th rucin93 🇵🇱 606 196 154ms 5 Jan 2025 281st mathisfun271 605 215 10ms 12 Feb 2024 281st anter69 🇭🇺 605 215 16ms 7 Jul 2025 283rd TFeld00 🇩🇰 602 216 16ms 19 May 2022 283rd andrewjc2000 602 216 28ms 15 May 2025 283rd CornerMercury 🇬🇧 602 216 16ms 1 Dec 2025 286th weliveinhell 🇭🇹 601 203 9ms 19 Jul 2024 286th helbling 🇨🇭 601 203 9ms 6 Sep 2024 288th neel11235813 595 201 670ms 1 Apr 2024 289th ndren 594 219 26ms 22 Nov 2023 289th neel11235813 594 219 19ms 1 Apr 2024 291st DialFrost 🇸🇬 591 201 4ms 18 Jan 2024 292nd DialFrost 🇸🇬 589 221 18ms 18 Jan 2024 292nd BREMAUCY 🇫🇷 589 221 17ms 22 Aug 2025 294th MeWhenI 🇻🇦 588 272 1,305ms 14 Jun 2023 295th scpchicken 🇵🇼 587 324 121ms 17 Mar 2023 296th KatieLG 🇬🇧 586 222 10ms 7 Jul 2024 296th jusaka 586 222 11ms 3 days ago 298th bac0id 585 185 1ms 25 Jun 2024 299th blaztoma 🇱🇹 581 281 122ms 28 Nov 2025 300th lynn 579 303 153ms 31 Mar 2022 301st dmrichwa 🇺🇸 578 211 9ms 17 Jun 2023 302nd jared-hughes 576 135 33ms 25 May 2022 303rd guilhem-roy 🇫🇷 573 227 10ms 3 Mar 2022 304th bac0id 570 208 395ms 25 Jun 2024 305th antimon2 🇯🇵 569 195 1,191ms 8 Mar 2024 306th scpchicken 🇵🇼 568 229 17ms 13 Oct 2023 307th janbehrens 🇩🇪 560 218 9ms 4 Dec 2024 308th stu303 558 233 9ms 20 Jul 2022 309th janAkali 🇷🇺 555 259 380ms 12 days ago 310th CaedenHarper 🇨🇦 553 218 1,265ms 2 Oct 2025 311th davecame 551 236 17ms 19 Mar 2024 312th JOrE20 550 222 9ms 23 Feb 2026 313th m42km 547 238 19ms 12 Nov 2023 313th firegene 🇮🇪 547 238 16ms 6 days ago 315th snoozingnewt 🇨🇦 546 302 125ms 20 Nov 2025 316th CaedenHarper 🇨🇦 542 240 10ms 10 Aug 2025 317th DialFrost 🇸🇬 541 221 1ms 29 Jan 2024 318th MichalMarsalek 🇨🇿 541 266 398ms 12 Oct 2023 319th KatieLG 🇬🇧 539 222 582ms 27 Oct 2024 320th commandz0 🇺🇸 538 242 10ms 27 Sep 2023 First Prev 241–320 of 483 Next Last