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 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 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 Multitap Input 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Arturo Befunge BQN CJam CoffeeScript Egel 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 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 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 Multitap Input 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 301st DialFrost 🇸🇬 541 221 1ms 29 Jan 2024 302nd KatieLG 🇬🇧 539 222 624ms 27 Oct 2024 303rd MichalMarsalek 🇨🇿 538 266 483ms 12 Oct 2023 304th commandblockguy 🇺🇸 537 242 10ms 27 Sep 2023 305th dokutan 535 243 16ms 9 Sep 2025 306th olleicua 🇺🇸 532 179 32ms 20 Feb 2025 307th bac0id 532 275 111ms 25 Jun 2024 308th alemelis 531 245 16ms 27 Aug 2024 309th m42km 529 226 1,124ms 4 Feb 2024 310th albanian-laundromat 527 229 721ms 27 days ago 311th retrohun 527 259 57ms 23 Nov 2022 312th FlorianCassayre 🇫🇷 526 247 10ms 21 Oct 2023 312th janbehrens 🇩🇪 526 247 10ms 4 Dec 2024 314th CaedenHarper 🇨🇦 525 228 670ms 19 Jan 2025 314th commandblockguy 🇺🇸 525 228 827ms 1 Sep 2025 316th Natanaelel 🇸🇪 524 363 144ms 16 Jun 2025 317th Babafaba 522 249 17ms 29 Oct 2025 318th Natanaelel 🇸🇪 521 183 31ms 18 Feb 2024 319th rucin93 🇵🇱 520 250 16ms 21 Jan 2024 320th bac0id 519 257 435ms 25 Jun 2024 321st coreynash 516 236 9ms 13 Feb 2024 321st CaedenHarper 🇨🇦 516 236 11ms 29 Aug 2025 323rd dokutan 515 232 955ms 9 Sep 2025 324th rucin93 🇵🇱 511 234 1,030ms 21 Jan 2024 325th cros107 🇦🇺 510 255 10ms 28 Jan 2024 325th RaBa21 🇭🇺 510 255 16ms 31 Jul 2025 327th jerrandolph 508 306 279ms 25 Sep 2025 328th CedricGebistorf 506 257 16ms 3 Mar 2022 329th andersk 🇺🇸 504 346 227ms 1 Nov 2022 330th uttumuttu 🇫🇮 503 242 9ms 9 Apr 2022 331st scpchicken 🇵🇼 501 224 170ms 25 Feb 2023 332nd Waffle3z 500 249 2ms 18 Sep 2021 333rd te-chnical 500 260 22ms 25 days ago 334th snoozingnewt 🇨🇦 500 284 100ms 14 Oct 2023 335th janbehrens 🇩🇪 499 238 5ms 4 Dec 2024 336th Babafaba 498 240 723ms 29 Oct 2025 337th MarcMush 🇫🇷 498 261 16ms 14 Jan 2024 338th emgordon154 497 245 9ms 4 Aug 2024 339th RYNO8 496 262 17ms 4 Sep 2023 340th CatsAreFluffy 494 263 17ms 17 Feb 2024 341st albanian-laundromat 494 319 3ms 16 Jul 2025 342nd wh3n3v3r 🇨🇿 492 264 16ms 14 Nov 2024 343rd SB-945 490 265 10ms 14 Mar 2024 344th Waffle3z 489 249 8ms 18 Sep 2021 345th robin-scragg 489 266 17ms 27 Aug 2025 346th olleicua 🇺🇸 487 250 9ms 21 Feb 2024 347th ridingqwerty 🇺🇸 487 267 16ms 14 Feb 2024 348th albanian-laundromat 485 268 18ms 28 Jun 2025 348th FortuiteMan 🇫🇷 485 268 16ms 7 Jul 2025 350th p-vf 🇨🇭 481 246 317ms 21 Nov 2021 351st DialFrost 🇸🇬 481 367 4ms 27 Sep 2024 352nd alemelis 480 249 795ms 23 Aug 2024 353rd KatieLG 🇬🇧 480 254 9ms 26 Oct 2022 354th janbehrens 🇩🇪 477 286 20ms 13 Sep 2022 355th scpchicken 🇵🇼 474 206 2ms 24 Feb 2023 356th MeWhenI 🇻🇦 473 268 483ms 4 Mar 2022 357th Waffle3z 472 202 31ms 23 Sep 2021 358th CaedenHarper 🇨🇦 471 330 268ms 27 days ago 359th janbehrens 🇩🇪 466 254 364ms 4 Dec 2024 360th JOrE20 🇺🇸 466 279 10ms 11 days ago 361st janbehrens 🇩🇪 462 240 553ms 4 Dec 2024 362nd adamnielson42 🇺🇸 454 286 14ms 29 Nov 2023 363rd elgan65536 451 387 158ms 10 Apr 2024 364th emgordon154 447 265 145ms 5 Jan 2025 365th CaedenHarper 🇨🇦 446 299 552ms 7 Oct 2025 366th janbehrens 🇩🇪 443 301 464ms 4 Dec 2024 367th MeWhenI 🇻🇦 441 480 80ms 18 Mar 2024 368th CaedenHarper 🇨🇦 440 269 372ms 17 Oct 2025 369th knutae 🇳🇴 439 296 9ms 29 Oct 2021 370th qpwoeirut 438 297 18ms 19 days ago 371st Natanaelel 🇸🇪 438 737 20ms 19 Feb 2024 372nd BambooleanLogic 🇸🇪 434 281 9ms 13 Jul 2023 373rd IISResetMe 422 272 275ms 14 Jun 2024 374th msbranicky 419 310 16ms 12 Aug 2023 375th pschmid0 🇺🇸 414 287 8ms 23 Oct 2022 First Prev 301–375 of 460 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