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 madex 🇩🇪 465 233 2ms 26 days ago 402nd janbehrens 🇩🇪 463 240 594ms 4 Dec 2024 403rd nemoyatpeace 461 282 17ms 12 Jan 2026 404th jusaka 460 423 6ms 13 hours ago 405th elgan65536 🇺🇸 456 385 157ms 7 Feb 2026 406th adamnielson42 🇺🇸 455 286 15ms 29 Nov 2023 407th emgordon154 450 265 166ms 5 Jan 2025 408th Chinay-Domitrix 🇺🇸 448 271 2,796ms 14 Mar 2026 409th CaedenHarper 🇨🇦 448 299 397ms 7 Oct 2025 410th MeWhenI 🇻🇦 447 480 91ms 18 Mar 2024 411th jusaka 446 372 711ms 13 hours ago 412th janbehrens 🇩🇪 445 301 463ms 4 Dec 2024 413th jusaka 444 266 2ms 13 hours ago 414th jusaka 443 402 5ms 13 hours ago 415th CaedenHarper 🇨🇦 441 269 418ms 17 Oct 2025 416th jusaka 440 276 2,998ms 8 hours ago 417th knutae 🇳🇴 440 296 10ms 29 Oct 2021 418th qpwoeirut 438 297 18ms 24 Nov 2025 419th Natanaelel 🇸🇪 438 737 20ms 19 Feb 2024 420th jusaka 436 314 6ms 13 hours ago 421st BambooleanLogic 🇸🇪 435 281 9ms 13 Jul 2023 422nd jusaka 433 309 355ms 13 hours ago 423rd jusaka 433 410 42ms 13 hours ago 424th jusaka 427 278 431ms 13 hours ago 425th jusaka 426 230 3ms 13 hours ago 426th IISResetMe 423 272 350ms 14 Jun 2024 427th msbranicky 420 310 18ms 12 Aug 2023 428th madex 🇩🇪 418 292 10ms 26 days ago 429th pschmid0 🇺🇸 416 287 5ms 23 Oct 2022 430th jusaka 415 497 7ms 13 hours ago 431st janbehrens 🇩🇪 412 307 2,980ms 20 Nov 2022 432nd jusaka 409 1,222 3ms 8 hours ago 433rd jusaka 408 245 1,313ms 13 hours ago 434th raspofabs 408 319 21ms 12 Nov 2023 435th TheZwierzLF 🇵🇱 407 320 12ms 6 Jan 2026 436th janbehrens 🇩🇪 406 314 451ms 13 Sep 2022 437th jusaka 404 358 379ms 13 hours ago 438th jusaka 400 282 145ms 13 hours ago 439th madex 🇩🇪 400 303 2,546ms 26 days ago 440th yzhs 🇩🇪 393 331 10ms 4 Jun 2022 441st LeeCamp 387 336 17ms 9 Dec 2021 442nd jusaka 387 409 3ms 13 hours ago 443rd msbranicky 385 311 699ms 16 Jan 2024 444th yuchuehw 385 338 17ms 5 Jan 2024 445th jusaka 385 614 27ms 8 hours ago 446th annaproxy 384 309 434ms 20 Mar 2022 447th TheZwierzLF 🇵🇱 384 312 869ms 6 Jan 2026 448th mbittner20 384 339 10ms 3 Jul 2023 449th Xzyaihni 383 459 224ms 20 Oct 2022 450th CatsAreFluffy 380 201 49ms 27 Jan 2023 451st Indivicivet 380 342 11ms 19 Oct 2021 452nd h3ra993huskp 🇯🇵 380 352 463ms 30 Nov 2025 453rd jusaka 375 320 2ms 8 hours ago 454th jusaka 375 426 1,282ms 13 hours ago 455th roupiq 🇵🇱 374 348 10ms 5 days ago 456th janbehrens 🇩🇪 372 291 2ms 13 Sep 2022 457th TaserTheFox 🇺🇸 371 351 17ms 19 May 2023 458th amollberg 🇸🇪 369 353 65ms 7 Jan 2022 459th jusaka 369 518 138ms 13 hours ago 460th MostParsingVex 365 332 2,720ms 11 Nov 2024 461st msbranicky 363 437 2ms 27 Aug 2023 462nd c0d3-4-F00d 🇩🇪 360 301 2ms 21 Mar 2022 463rd KatieLG 🇬🇧 357 267 35ms 9 Jan 2023 464th jusaka 353 317 189ms 8 hours ago 465th KrausRaus 🇺🇸 353 369 17ms 4 Jul 2024 466th gigaprofisi 🇺🇸 347 352 13ms 4 Sep 2025 467th Pyroan 345 377 11ms 16 Apr 2025 468th msbranicky 344 454 324ms 31 Aug 2023 469th eiburns 342 380 10ms 27 Oct 2023 470th jusaka 341 337 302ms 8 hours ago 471st tomh1012 341 382 17ms 4 Mar 2026 472nd jusaka 338 329 210ms 13 hours ago 473rd TheZwierzLF 🇵🇱 336 284 37ms 6 Jan 2026 474th michelebastione 🇮🇹 336 387 17ms 26 Feb 2022 475th janbehrens 🇩🇪 333 294 3ms 13 Sep 2022 476th msbranicky 333 361 2ms 14 Oct 2023 477th MeWhenI 🇻🇦 331 531 202ms 18 Mar 2024 478th MeWhenI 🇻🇦 329 582 119ms 18 Mar 2024 479th tomh1012 328 362 441ms 17 Dec 2025 480th JPRuskin 🇬🇧 323 356 318ms 25 Apr 2024 First Prev 401–480 of 532 Next Last