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 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 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 Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 226th rucin93 🇵🇱 658 185 9ms 19 Jul 2024 227th lifthrasiir 🇰🇷 657 182 445ms 2 Dec 2024 228th nullie 656 198 9ms 14 Jun 2022 228th emgordon154 656 198 10ms 16 Oct 2025 230th stefangimmillaro 654 181 328ms 6 Oct 2025 231st MeWhenI 🇻🇦 652 191 2ms 28 Feb 2024 232nd Salutations45 651 187 9ms 15 Oct 2025 233rd stefangimmillaro 648 147 41ms 12 May 2024 234th emgordon154 648 241 6ms 29 Jun 2025 235th stefangimmillaro 647 255 164ms 24 Jul 2023 236th duckyluuk 🇳🇱 646 185 1,333ms 23 Jun 2024 237th MostParsingVex 646 459 28ms 16 Jan 2025 238th error256 645 329 8ms 29 Jul 2024 239th stefangimmillaro 644 227 104ms 3 Oct 2023 240th emgordon154 642 186 880ms 12 Apr 2025 241st lynn 642 249 1,387ms 25 Oct 2021 242nd SirBogman 🇺🇸 640 149 38ms 31 Jan 2024 242nd tatzyr 🇯🇵 640 149 34ms 10 Mar 2025 244th stefangimmillaro 639 273 158ms 17 Nov 2023 245th orthoplex 🇨🇽 637 204 16ms 13 Oct 2021 246th dcgjb 634 181 744ms 30 Jan 2024 247th jakobkordez 🇸🇮 634 205 16ms 30 Oct 2022 248th MeWhenI 🇻🇦 631 176 139ms 4 Sep 2024 249th AdrienHache 🇫🇷 630 188 441ms 25 Jul 2025 250th annaproxy 628 207 10ms 6 May 2022 251st stefangimmillaro 627 159 1,169ms 20 Oct 2023 252nd StefanHabel 🇨🇦 625 208 10ms 8 Apr 2024 253rd DialFrost 🇸🇬 616 180 625ms 18 Jan 2024 254th OllieBoyne 🇬🇧 616 211 9ms 19 Aug 2022 255th annaproxy 616 309 146ms 4 Sep 2022 256th postie77 614 193 331ms 24 Mar 2023 257th stefangimmillaro 614 195 2,931ms 12 Nov 2024 258th Artemis21 🇬🇧 613 212 15ms 3 Jan 2025 259th bac0id 607 208 361ms 25 Jun 2024 260th InigoK 🇺🇸 607 214 16ms 22 Sep 2025 260th blaztoma 🇱🇹 607 214 16ms 7 days ago 262nd rucin93 🇵🇱 604 196 143ms 5 Jan 2025 263rd mathisfun271 604 215 10ms 12 Feb 2024 263rd anter69 🇭🇺 604 215 15ms 7 Jul 2025 265th TFeld00 🇩🇰 601 216 15ms 19 May 2022 265th andrewjc2000 601 216 28ms 15 May 2025 267th weliveinhell 🇭🇹 600 203 9ms 19 Jul 2024 267th helbling 🇨🇭 600 203 9ms 6 Sep 2024 269th neel11235813 595 201 1,219ms 1 Apr 2024 270th ndren 593 219 25ms 22 Nov 2023 270th neel11235813 593 219 18ms 1 Apr 2024 272nd DialFrost 🇸🇬 591 201 4ms 18 Jan 2024 273rd voytxt 🇨🇿 591 206 10ms 15 Aug 2025 274th DialFrost 🇸🇬 588 221 17ms 18 Jan 2024 274th BREMAUCY 🇫🇷 588 221 17ms 22 Aug 2025 276th MeWhenI 🇻🇦 588 272 1,275ms 14 Jun 2023 277th scpchicken 🇵🇼 587 324 149ms 17 Mar 2023 278th KatieLG 🇬🇧 585 222 9ms 7 Jul 2024 279th bac0id 584 185 2ms 25 Jun 2024 280th dmrichwa 🇺🇸 577 211 9ms 17 Jun 2023 281st jared-hughes 576 135 40ms 25 May 2022 282nd lynn 576 303 152ms 31 Mar 2022 283rd guilhem-roy 🇫🇷 572 227 10ms 3 Mar 2022 284th antimon2 🇯🇵 569 195 1,306ms 8 Mar 2024 285th bac0id 569 208 349ms 25 Jun 2024 286th scpchicken 🇵🇼 567 229 16ms 13 Oct 2023 287th janbehrens 🇩🇪 559 218 9ms 4 Dec 2024 288th stu303 558 233 9ms 20 Jul 2022 289th CaedenHarper 🇨🇦 553 218 914ms 2 Oct 2025 290th davecame 550 236 16ms 19 Mar 2024 291st m42km 546 238 18ms 12 Nov 2023 292nd snoozingnewt 🇺🇸 546 302 121ms 5 days ago 293rd DialFrost 🇸🇬 541 221 1ms 29 Jan 2024 294th CaedenHarper 🇨🇦 541 240 10ms 10 Aug 2025 295th KatieLG 🇬🇧 538 222 796ms 27 Oct 2024 296th MichalMarsalek 🇨🇿 538 266 351ms 12 Oct 2023 297th commandblockguy 🇺🇸 537 242 10ms 27 Sep 2023 298th dokutan 535 243 17ms 9 Sep 2025 299th olleicua 🇺🇸 532 179 41ms 20 Feb 2025 300th bac0id 532 275 115ms 25 Jun 2024 First Prev 226–300 of 450 Next Last