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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 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 240th emgordon154 657 198 9ms 16 Oct 2025 242nd stefangimmillaro 655 181 384ms 6 Oct 2025 243rd MeWhenI 🇻🇦 653 170 133ms 30 hours ago 244th Salutations45 653 187 9ms 15 Oct 2025 245th snoozingnewt 🇨🇦 653 199 17ms 6 Dec 2025 246th MeWhenI 🇻🇦 652 191 1ms 28 Feb 2024 247th stefangimmillaro 649 147 38ms 12 May 2024 248th emgordon154 648 241 6ms 29 Jun 2025 249th stefangimmillaro 647 255 142ms 24 Jul 2023 250th duckyluuk 🇳🇱 646 185 617ms 23 Jun 2024 251st MostParsingVex 646 459 26ms 16 Jan 2025 252nd stefangimmillaro 644 227 113ms 3 Oct 2023 253rd emgordon154 643 186 561ms 12 Apr 2025 254th lynn 642 249 1,351ms 25 Oct 2021 255th SirBogman 🇺🇸 640 149 38ms 31 Jan 2024 255th tatzyr 🇯🇵 640 149 37ms 10 Mar 2025 257th blaztoma 🇱🇹 639 153 3ms 14 Dec 2025 258th stefangimmillaro 639 273 172ms 17 Nov 2023 259th orthoplex 🇨🇽 637 204 17ms 13 Oct 2021 260th dcgjb 634 181 884ms 30 Jan 2024 261st jakobkordez 🇸🇮 634 205 17ms 30 Oct 2022 262nd AdrienHache 🇫🇷 631 188 398ms 25 Jul 2025 263rd annaproxy 628 207 10ms 6 May 2022 263rd StefanHabel 🇨🇦 628 207 11ms 19 days ago 265th stefangimmillaro 627 159 1,268ms 20 Oct 2023 266th snoozingnewt 🇨🇦 626 191 523ms 6 Dec 2025 267th error256 621 329 8ms 29 Jul 2024 268th stefangimmillaro 620 195 3,482ms 12 Nov 2024 269th DialFrost 🇸🇬 616 180 636ms 18 Jan 2024 270th OllieBoyne 🇬🇧 616 211 10ms 19 Aug 2022 271st annaproxy 616 309 129ms 4 Sep 2022 272nd postie77 614 193 389ms 24 Mar 2023 273rd Artemis21 🇬🇧 613 212 16ms 3 Jan 2025 274th Lv0Sys 🇵🇱 613 254 336ms 28 Feb 2026 275th InigoK 🇺🇸 608 214 18ms 22 Sep 2025 276th alexsave 607 201 10ms 3 Jan 2026 277th bac0id 607 208 430ms 25 Jun 2024 278th rucin93 🇵🇱 606 196 154ms 5 Jan 2025 279th mathisfun271 605 215 10ms 12 Feb 2024 279th anter69 🇭🇺 605 215 16ms 7 Jul 2025 281st TFeld00 🇩🇰 602 216 16ms 19 May 2022 281st andrewjc2000 602 216 28ms 15 May 2025 281st CornerMercury 🇬🇧 602 216 16ms 1 Dec 2025 284th weliveinhell 🇭🇹 601 203 10ms 19 Jul 2024 284th helbling 🇨🇭 601 203 9ms 6 Sep 2024 286th neel11235813 595 201 670ms 1 Apr 2024 287th ndren 594 219 26ms 22 Nov 2023 287th neel11235813 594 219 19ms 1 Apr 2024 289th voytxt 🇨🇿 592 206 10ms 15 Aug 2025 290th DialFrost 🇸🇬 591 201 4ms 18 Jan 2024 291st DialFrost 🇸🇬 588 221 18ms 18 Jan 2024 291st BREMAUCY 🇫🇷 588 221 17ms 22 Aug 2025 293rd MeWhenI 🇻🇦 588 272 1,305ms 14 Jun 2023 294th scpchicken 🇵🇼 587 324 121ms 17 Mar 2023 295th KatieLG 🇬🇧 586 222 10ms 7 Jul 2024 296th bac0id 585 185 1ms 25 Jun 2024 297th blaztoma 🇱🇹 581 281 122ms 28 Nov 2025 298th dmrichwa 🇺🇸 578 211 11ms 17 Jun 2023 299th jared-hughes 576 135 33ms 25 May 2022 300th lynn 576 303 159ms 31 Mar 2022 301st guilhem-roy 🇫🇷 573 227 10ms 3 Mar 2022 302nd bac0id 570 208 395ms 25 Jun 2024 303rd antimon2 🇯🇵 569 195 1,191ms 8 Mar 2024 304th scpchicken 🇵🇼 568 229 17ms 13 Oct 2023 305th janbehrens 🇩🇪 560 218 9ms 4 Dec 2024 306th stu303 558 233 9ms 20 Jul 2022 307th janAkali 🇷🇺 555 259 380ms 4 days ago 308th CaedenHarper 🇨🇦 553 218 1,344ms 2 Oct 2025 309th davecame 551 236 17ms 19 Mar 2024 310th JOrE20 550 222 11ms 23 Feb 2026 311th m42km 546 238 19ms 12 Nov 2023 312th snoozingnewt 🇨🇦 546 302 138ms 20 Nov 2025 313th CaedenHarper 🇨🇦 542 240 10ms 10 Aug 2025 314th DialFrost 🇸🇬 541 221 1ms 29 Jan 2024 315th MichalMarsalek 🇨🇿 541 266 398ms 12 Oct 2023 316th KatieLG 🇬🇧 539 222 582ms 27 Oct 2024 317th commandz0 🇺🇸 537 242 10ms 27 Sep 2023 318th dokutan 535 243 17ms 9 Sep 2025 319th olleicua 🇺🇸 533 179 36ms 20 Feb 2025 320th bac0id 532 275 121ms 25 Jun 2024 First Prev 241–320 of 479 Next Last