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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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim 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 301st MeWhenI 🇻🇦 583 272 1,582ms 14 Jun 2023 302nd dmrichwa 🇺🇸 578 211 9ms 17 Jun 2023 303rd lynn 578 303 162ms 31 Mar 2022 304th jared-hughes 576 135 33ms 25 May 2022 305th guilhem-roy 🇫🇷 573 227 10ms 3 Mar 2022 306th bac0id 570 208 383ms 25 Jun 2024 307th antimon2 🇯🇵 569 195 1,350ms 8 Mar 2024 308th janbehrens 🇩🇪 560 218 11ms 4 Dec 2024 309th stu303 558 233 11ms 20 Jul 2022 310th janAkali 🇷🇺 558 259 421ms 24 Mar 2026 311th CaedenHarper 🇨🇦 553 218 929ms 2 Oct 2025 312th davecame 551 236 18ms 19 Mar 2024 313th JOrE20 550 222 11ms 23 Feb 2026 314th m42km 547 238 19ms 12 Nov 2023 314th firegene 🇮🇪 547 238 17ms 30 Mar 2026 316th snoozingnewt 🇨🇦 546 302 122ms 20 Nov 2025 317th MichalMarsalek 🇨🇿 543 266 405ms 12 Oct 2023 318th CaedenHarper 🇨🇦 542 240 11ms 10 Aug 2025 319th DialFrost 🇸🇬 541 221 1ms 29 Jan 2024 320th KatieLG 🇬🇧 539 222 680ms 27 Oct 2024 321st commandz0 🇺🇸 538 242 10ms 27 Sep 2023 322nd dokutan 535 243 16ms 9 Sep 2025 323rd olleicua 🇺🇸 533 179 38ms 20 Feb 2025 324th bac0id 532 275 127ms 25 Jun 2024 325th alemelis 531 245 18ms 27 Aug 2024 325th AstroOrbis 531 245 20ms 22 Feb 2026 327th prestosilver 🇺🇸 530 273 426ms 4 days ago 328th m42km 529 226 651ms 4 Feb 2024 329th albanian-laundromat 🇺🇸 527 229 774ms 16 Nov 2025 330th FlorianCassayre 🇫🇷 527 247 10ms 21 Oct 2023 330th janbehrens 🇩🇪 527 247 11ms 4 Dec 2024 332nd retrohun 527 259 61ms 23 Nov 2022 333rd CaedenHarper 🇨🇦 525 228 671ms 19 Jan 2025 333rd commandz0 🇺🇸 525 228 633ms 1 Sep 2025 335th Natanaelel 🇸🇪 524 363 144ms 16 Jun 2025 336th Babafaba 522 249 17ms 29 Oct 2025 337th Natanaelel 🇸🇪 521 183 36ms 18 Feb 2024 338th rucin93 🇵🇱 520 250 18ms 21 Jan 2024 339th bac0id 520 257 390ms 25 Jun 2024 340th aksyristos 518 251 20ms 26 Mar 2026 341st coreynash 517 236 10ms 13 Feb 2024 341st CaedenHarper 🇨🇦 517 236 12ms 29 Aug 2025 343rd dokutan 515 232 632ms 9 Sep 2025 344th rucin93 🇵🇱 511 234 577ms 21 Jan 2024 345th cros107 🇦🇺 510 255 11ms 28 Jan 2024 345th RaBa21 🇭🇺 510 255 20ms 31 Jul 2025 347th jerrandolph 509 306 368ms 25 Sep 2025 348th madex 🇩🇪 507 345 212ms 2 days ago 349th CedricGebistorf 506 257 18ms 3 Mar 2022 350th andersk 🇺🇸 506 346 226ms 1 Nov 2022 351st uttumuttu 🇫🇮 504 242 10ms 9 Apr 2022 352nd scpchicken 🇵🇼 501 224 183ms 25 Feb 2023 353rd janbehrens 🇩🇪 501 238 5ms 4 Dec 2024 354th Waffle3z 500 249 2ms 18 Sep 2021 355th te-chnical 500 260 24ms 18 Nov 2025 356th Babafaba 498 240 774ms 29 Oct 2025 357th emgordon154 498 245 10ms 4 Aug 2024 358th MarcMush 🇫🇷 498 261 17ms 14 Jan 2024 359th RYNO8 496 262 16ms 4 Sep 2023 360th CatsAreFluffy 495 263 18ms 17 Feb 2024 361st albanian-laundromat 🇺🇸 494 319 3ms 16 Jul 2025 362nd wh3n3v3r 🇨🇿 493 264 21ms 14 Nov 2024 363rd SB-945 491 265 10ms 14 Mar 2024 364th Waffle3z 490 249 9ms 18 Sep 2021 365th robin-scragg 489 266 18ms 27 Aug 2025 366th olleicua 🇺🇸 488 250 9ms 21 Feb 2024 367th ridingqwerty 🇺🇸 487 267 17ms 14 Feb 2024 368th albanian-laundromat 🇺🇸 485 268 18ms 28 Jun 2025 368th FortuiteMan 🇫🇷 485 268 17ms 7 Jul 2025 370th p-vf 🇨🇭 482 246 389ms 21 Nov 2021 371st DialFrost 🇸🇬 481 367 4ms 27 Sep 2024 372nd alemelis 480 249 695ms 23 Aug 2024 373rd KatieLG 🇬🇧 480 254 10ms 26 Oct 2022 374th janbehrens 🇩🇪 477 286 18ms 13 Sep 2022 375th madex 🇩🇪 476 273 22ms 21 Mar 2026 376th scpchicken 🇵🇼 475 206 3ms 24 Feb 2023 377th MeWhenI 🇻🇦 473 268 432ms 4 Mar 2022 378th Waffle3z 472 202 37ms 23 Sep 2021 379th CaedenHarper 🇨🇦 472 330 360ms 17 Nov 2025 380th janbehrens 🇩🇪 467 254 408ms 4 Dec 2024 381st JOrE20 466 279 10ms 2 Dec 2025 382nd madex 🇩🇪 464 233 2ms 21 Mar 2026 383rd janbehrens 🇩🇪 462 240 594ms 4 Dec 2024 384th nemoyatpeace 461 282 17ms 12 Jan 2026 385th adamnielson42 🇺🇸 455 286 15ms 29 Nov 2023 386th elgan65536 🇺🇸 455 385 165ms 7 Feb 2026 387th emgordon154 448 265 146ms 5 Jan 2025 388th CaedenHarper 🇨🇦 447 299 512ms 7 Oct 2025 389th Chinay-Domitrix 🇺🇸 446 271 2,798ms 14 Mar 2026 390th janbehrens 🇩🇪 444 301 475ms 4 Dec 2024 391st CaedenHarper 🇨🇦 441 269 448ms 17 Oct 2025 392nd MeWhenI 🇻🇦 441 480 91ms 18 Mar 2024 393rd knutae 🇳🇴 439 296 10ms 29 Oct 2021 394th qpwoeirut 438 297 18ms 24 Nov 2025 395th Natanaelel 🇸🇪 438 737 22ms 19 Feb 2024 396th BambooleanLogic 🇸🇪 434 281 10ms 13 Jul 2023 397th IISResetMe 422 272 247ms 14 Jun 2024 398th msbranicky 420 310 18ms 12 Aug 2023 399th madex 🇩🇪 418 292 10ms 21 Mar 2026 400th pschmid0 🇺🇸 415 287 5ms 23 Oct 2022 First Prev 301–400 of 485 Next Last