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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 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 ><> 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 ALGOL 68 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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 321st Natanaelel 🇸🇪 524 363 144ms 16 Jun 2025 322nd Babafaba 522 249 16ms 29 Oct 2025 323rd Natanaelel 🇸🇪 521 183 33ms 18 Feb 2024 324th rucin93 🇵🇱 520 250 16ms 21 Jan 2024 325th bac0id 520 257 416ms 25 Jun 2024 326th coreynash 517 236 10ms 13 Feb 2024 326th CaedenHarper 🇨🇦 517 236 13ms 29 Aug 2025 328th dokutan 515 232 757ms 9 Sep 2025 329th JOrE20 🇺🇸 513 238 10ms 6 days ago 330th snoozingnewt 🇨🇦 512 277 92ms 41 hours ago 331st rucin93 🇵🇱 511 234 660ms 21 Jan 2024 332nd cros107 🇦🇺 510 255 11ms 28 Jan 2024 332nd RaBa21 🇭🇺 510 255 16ms 31 Jul 2025 334th jerrandolph 508 306 303ms 25 Sep 2025 335th CedricGebistorf 506 257 17ms 3 Mar 2022 336th uttumuttu 🇫🇮 504 242 9ms 9 Apr 2022 337th andersk 🇺🇸 504 346 222ms 1 Nov 2022 338th scpchicken 🇵🇼 501 224 154ms 25 Feb 2023 339th Waffle3z 500 249 2ms 18 Sep 2021 340th te-chnical 500 260 23ms 18 Nov 2025 341st janbehrens 🇩🇪 499 238 5ms 4 Dec 2024 342nd Babafaba 498 240 667ms 29 Oct 2025 343rd emgordon154 498 245 10ms 4 Aug 2024 344th MarcMush 🇫🇷 498 261 17ms 14 Jan 2024 345th RYNO8 496 262 18ms 4 Sep 2023 346th CatsAreFluffy 494 263 17ms 17 Feb 2024 347th albanian-laundromat 494 319 3ms 16 Jul 2025 348th wh3n3v3r 🇨🇿 492 264 18ms 14 Nov 2024 349th SB-945 491 265 9ms 14 Mar 2024 350th Waffle3z 490 249 9ms 18 Sep 2021 351st robin-scragg 489 266 18ms 27 Aug 2025 352nd olleicua 🇺🇸 488 250 9ms 21 Feb 2024 353rd ridingqwerty 🇺🇸 487 267 16ms 14 Feb 2024 354th albanian-laundromat 485 268 17ms 28 Jun 2025 354th FortuiteMan 🇫🇷 485 268 16ms 7 Jul 2025 356th p-vf 🇨🇭 482 246 366ms 21 Nov 2021 357th DialFrost 🇸🇬 481 367 4ms 27 Sep 2024 358th alemelis 480 249 746ms 23 Aug 2024 359th KatieLG 🇬🇧 480 254 10ms 26 Oct 2022 360th janbehrens 🇩🇪 477 286 18ms 13 Sep 2022 361st scpchicken 🇵🇼 475 206 2ms 24 Feb 2023 362nd MeWhenI 🇻🇦 473 268 483ms 4 Mar 2022 363rd Waffle3z 472 202 35ms 23 Sep 2021 364th CaedenHarper 🇨🇦 471 330 296ms 17 Nov 2025 365th janbehrens 🇩🇪 467 254 411ms 4 Dec 2024 366th JOrE20 🇺🇸 466 279 10ms 2 Dec 2025 367th janbehrens 🇩🇪 462 240 633ms 4 Dec 2024 368th nemoyatpeace 461 282 18ms 12 Jan 2026 369th adamnielson42 🇺🇸 455 286 15ms 29 Nov 2023 370th elgan65536 🇺🇸 453 385 156ms 4 days ago 371st emgordon154 448 265 156ms 5 Jan 2025 372nd CaedenHarper 🇨🇦 447 299 397ms 7 Oct 2025 373rd janbehrens 🇩🇪 444 301 463ms 4 Dec 2024 374th CaedenHarper 🇨🇦 441 269 406ms 17 Oct 2025 375th MeWhenI 🇻🇦 441 480 79ms 18 Mar 2024 376th knutae 🇳🇴 439 296 10ms 29 Oct 2021 377th qpwoeirut 438 297 18ms 24 Nov 2025 378th Natanaelel 🇸🇪 438 737 20ms 19 Feb 2024 379th BambooleanLogic 🇸🇪 434 281 9ms 13 Jul 2023 380th IISResetMe 422 272 306ms 14 Jun 2024 381st msbranicky 419 310 18ms 12 Aug 2023 382nd pschmid0 🇺🇸 414 287 4ms 23 Oct 2022 383rd janbehrens 🇩🇪 411 307 2,491ms 20 Nov 2022 384th raspofabs 408 319 19ms 12 Nov 2023 385th TheZwierzLF 🇵🇱 406 320 11ms 6 Jan 2026 386th janbehrens 🇩🇪 404 314 457ms 13 Sep 2022 387th yzhs 🇩🇪 393 331 10ms 4 Jun 2022 388th LeeCamp 387 336 17ms 9 Dec 2021 388th Lv0Sys 🇵🇱 387 336 19ms 5 Dec 2025 390th msbranicky 385 311 746ms 16 Jan 2024 391st yuchuehw 385 338 16ms 5 Jan 2024 392nd annaproxy 384 309 411ms 20 Mar 2022 393rd TheZwierzLF 🇵🇱 383 312 867ms 6 Jan 2026 394th mbittner20 383 339 10ms 3 Jul 2023 395th CatsAreFluffy 380 201 51ms 27 Jan 2023 396th Indivicivet 380 342 11ms 19 Oct 2021 397th h3ra993huskp 🇯🇵 380 352 463ms 30 Nov 2025 398th Xzyaihni 380 459 230ms 20 Oct 2022 399th janbehrens 🇩🇪 371 291 2ms 13 Sep 2022 400th TaserTheFox 🇺🇸 370 351 16ms 19 May 2023 First Prev 321–400 of 469 Next Last