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 401st nemoyatpeace 461 282 17ms 12 Jan 2026 402nd jusaka 460 423 6ms 4 days ago 403rd elgan65536 🇺🇸 456 385 165ms 7 Feb 2026 404th adamnielson42 🇺🇸 455 286 15ms 29 Nov 2023 405th emgordon154 450 265 161ms 5 Jan 2025 406th Chinay-Domitrix 🇺🇸 448 271 2,796ms 14 Mar 2026 407th CaedenHarper 🇨🇦 448 299 397ms 7 Oct 2025 408th MeWhenI 🇻🇦 447 480 91ms 18 Mar 2024 409th jusaka 446 372 747ms 4 days ago 410th janbehrens 🇩🇪 445 301 463ms 4 Dec 2024 411th jusaka 444 266 2ms 4 days ago 412th jusaka 443 402 5ms 4 days ago 413th CaedenHarper 🇨🇦 441 269 418ms 17 Oct 2025 414th jusaka 440 276 2,998ms 4 days ago 415th knutae 🇳🇴 439 296 10ms 29 Oct 2021 416th qpwoeirut 438 297 18ms 24 Nov 2025 417th Natanaelel 🇸🇪 438 737 20ms 19 Feb 2024 418th jusaka 436 314 6ms 4 days ago 419th BambooleanLogic 🇸🇪 435 281 9ms 13 Jul 2023 420th jusaka 433 309 355ms 4 days ago 421st jusaka 433 410 42ms 4 days ago 422nd jusaka 427 278 431ms 4 days ago 423rd jusaka 426 230 3ms 4 days ago 424th IISResetMe 423 272 350ms 14 Jun 2024 425th msbranicky 420 310 18ms 12 Aug 2023 426th madex 🇩🇪 418 292 10ms 21 Mar 2026 427th pschmid0 🇺🇸 416 287 5ms 23 Oct 2022 428th jusaka 415 497 7ms 4 days ago 429th janbehrens 🇩🇪 412 307 2,980ms 20 Nov 2022 430th jusaka 409 1,222 3ms 4 days ago 431st jusaka 408 245 1,539ms 4 days ago 432nd raspofabs 408 319 21ms 12 Nov 2023 433rd janbehrens 🇩🇪 406 314 451ms 13 Sep 2022 434th TheZwierzLF 🇵🇱 406 320 12ms 6 Jan 2026 435th jusaka 404 358 379ms 4 days ago 436th jusaka 400 282 145ms 4 days ago 437th madex 🇩🇪 400 303 2,546ms 21 Mar 2026 438th yzhs 🇩🇪 393 331 10ms 4 Jun 2022 439th LeeCamp 387 336 17ms 9 Dec 2021 440th jusaka 387 409 3ms 4 days ago 441st msbranicky 385 311 699ms 16 Jan 2024 442nd yuchuehw 385 338 17ms 5 Jan 2024 443rd jusaka 385 614 27ms 4 days ago 444th annaproxy 384 309 434ms 20 Mar 2022 445th TheZwierzLF 🇵🇱 384 312 869ms 6 Jan 2026 446th mbittner20 384 339 10ms 3 Jul 2023 447th Xzyaihni 383 459 230ms 20 Oct 2022 448th CatsAreFluffy 380 201 49ms 27 Jan 2023 449th MostParsingVex 380 319 2,629ms 2 days ago 450th Indivicivet 380 342 11ms 19 Oct 2021 451st h3ra993huskp 🇯🇵 380 352 463ms 30 Nov 2025 452nd jusaka 375 320 2ms 4 days ago 453rd jusaka 375 426 1,282ms 4 days ago 454th roupiq 🇵🇱 374 348 10ms 9 days ago 455th janbehrens 🇩🇪 372 291 2ms 13 Sep 2022 456th TaserTheFox 🇺🇸 371 351 17ms 19 May 2023 457th jusaka 369 518 138ms 4 days ago 458th amollberg 🇸🇪 368 353 65ms 7 Jan 2022 459th msbranicky 363 437 2ms 27 Aug 2023 460th c0d3-4-F00d 🇩🇪 360 301 2ms 21 Mar 2022 461st KatieLG 🇬🇧 357 267 35ms 9 Jan 2023 462nd jusaka 353 317 189ms 4 days ago 463rd KrausRaus 🇺🇸 353 369 17ms 4 Jul 2024 464th gigaprofisi 🇺🇸 347 352 13ms 4 Sep 2025 465th Pyroan 345 377 11ms 16 Apr 2025 466th msbranicky 344 454 324ms 31 Aug 2023 467th eiburns 342 380 10ms 27 Oct 2023 468th jusaka 341 337 302ms 4 days ago 469th tomh1012 341 382 17ms 4 Mar 2026 470th jusaka 338 329 210ms 4 days ago 471st TheZwierzLF 🇵🇱 336 284 37ms 6 Jan 2026 472nd michelebastione 🇮🇹 336 387 17ms 26 Feb 2022 473rd janbehrens 🇩🇪 333 294 3ms 13 Sep 2022 474th msbranicky 333 361 2ms 14 Oct 2023 475th MeWhenI 🇻🇦 331 531 211ms 18 Mar 2024 476th MeWhenI 🇻🇦 329 582 119ms 18 Mar 2024 477th tomh1012 328 362 441ms 17 Dec 2025 478th JPRuskin 🇬🇧 323 356 318ms 25 Apr 2024 479th camieac 🇬🇧 323 403 10ms 22 Nov 2023 480th jusaka 322 370 164ms 4 days ago First Prev 401–480 of 531 Next Last