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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 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 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 201st dvargas46 🇺🇸 740 185 24ms 7 Apr 2023 202nd emplv 🇱🇻 731 163 148ms 28 Mar 2025 203rd NewDefectus 🇮🇱 731 167 10ms 21 Sep 2021 204th SirBogman 🇺🇸 730 164 571ms 31 Jan 2024 205th primo-ppcg 🇹🇭 729 131 36ms 28 Sep 2021 206th ovs-code 🇩🇪 727 153 800ms 10 Mar 2024 207th prplz 🇦🇺 727 179 10ms 13 Jan 2024 208th MeWhenI 🇻🇦 726 272 1,759ms 11 days ago 209th MostParsingVex 724 416 30ms 6 days ago 210th GrayJoKing 🇦🇺 723 156 151ms 2 Oct 2021 211th jared-hughes 723 180 17ms 9 Apr 2022 211th kg583 🇺🇸 723 180 18ms 28 Feb 2026 213th jusaka 721 418 65ms 10 days ago 214th MeWhenI 🇻🇦 719 219 5ms 13 Aug 2024 215th edsrzf 🇳🇿 717 218 335ms 16 Dec 2025 216th jusaka 717 245 164ms 17 days ago 217th MeWhenI 🇻🇦 710 138 3ms 28 Feb 2024 218th inventshah 710 178 445ms 12 Nov 2022 219th MeWhenI 🇻🇦 710 220 333ms 28 Feb 2024 220th SirBogman 🇺🇸 705 163 279ms 31 Jan 2024 221st jusaka 703 185 9ms 14 days ago 221st vang1ong7ang 703 185 9ms 45 hours ago 223rd plcc0 699 186 17ms 20 Feb 2026 224th inventshah 698 155 1ms 12 Nov 2022 225th jared-hughes 696 180 1ms 9 Apr 2022 226th MeWhenI 🇻🇦 695 623 13ms 27 Jan 2025 227th MeWhenI 🇻🇦 693 172 136ms 5 Jan 2025 228th pardouin 🇫🇷 689 176 2,694ms 20 May 2025 229th CLOStrophobic 🇮🇹 687 283 6ms 3 Mar 2025 230th inventshah 685 190 17ms 12 Nov 2022 230th stefangimmillaro 685 190 27ms 8 Aug 2023 230th lifthrasiir 🇰🇷 685 190 18ms 16 Nov 2024 233rd MeWhenI 🇻🇦 682 176 1ms 28 Feb 2024 234th stefangimmillaro 682 229 328ms 18 Oct 2023 235th primo-ppcg 🇹🇭 681 201 14ms 24 Jan 2022 236th inventshah 679 174 1ms 12 Nov 2022 237th NewDefectus 🇮🇱 677 160 1ms 28 Dec 2021 238th Flekay 🇩🇪 674 193 10ms 27 Mar 2026 239th MeWhenI 🇻🇦 673 418 14ms 17 Nov 2021 240th KrausRaus 🇺🇸 671 182 11ms 30 Jun 2024 240th Lv0Sys 🇵🇱 671 182 10ms 28 Feb 2026 242nd jared-hughes 667 143 36ms 10 Sep 2022 243rd tayloia 🇬🇧 667 183 10ms 4 May 2023 244th snoozingnewt 🇨🇦 667 195 19ms 19 days ago 245th stefangimmillaro 663 202 473ms 6 Oct 2025 246th MarcMush 🇫🇷 662 168 594ms 14 Jan 2024 247th duckyluuk 🇳🇱 660 197 21ms 23 Jun 2024 248th MeWhenI 🇻🇦 659 170 133ms 27 Mar 2026 249th lifthrasiir 🇰🇷 658 182 512ms 2 Dec 2024 250th nullie 657 198 10ms 14 Jun 2022 250th emgordon154 657 198 10ms 16 Oct 2025 252nd stefangimmillaro 656 181 395ms 6 Oct 2025 253rd MeWhenI 🇻🇦 656 191 1ms 28 Feb 2024 254th CornerMercury 🇬🇧 654 199 16ms 7 days ago 255th Salutations45 653 187 10ms 15 Oct 2025 256th emgordon154 653 241 6ms 29 Jun 2025 257th stefangimmillaro 650 255 138ms 24 Jul 2023 258th stefangimmillaro 649 147 39ms 12 May 2024 259th stefangimmillaro 648 227 107ms 3 Oct 2023 260th duckyluuk 🇳🇱 647 185 647ms 23 Jun 2024 260th snoozingnewt 🇨🇦 647 185 659ms 19 days ago 260th jusaka 647 185 464ms 10 days ago 263rd emgordon154 643 186 531ms 12 Apr 2025 264th stefangimmillaro 643 273 164ms 17 Nov 2023 265th SirBogman 🇺🇸 641 149 41ms 31 Jan 2024 265th tatzyr 🇯🇵 641 149 37ms 10 Mar 2025 267th blaztoma 🇱🇹 640 153 3ms 14 Dec 2025 268th orthoplex 🇨🇽 638 204 18ms 13 Oct 2021 269th dcgjb 635 181 782ms 30 Jan 2024 270th jakobkordez 🇸🇮 635 205 18ms 30 Oct 2022 271st AdrienHache 🇫🇷 631 188 500ms 25 Jul 2025 272nd stefangimmillaro 628 159 1,302ms 20 Oct 2023 273rd annaproxy 628 207 11ms 6 May 2022 273rd StefanHabel 🇨🇦 628 207 11ms 9 Mar 2026 275th error256 627 329 7ms 29 Jul 2024 276th targrik 622 192 5ms 6 days ago 277th stefangimmillaro 622 195 2,497ms 12 Nov 2024 278th scpchicken 🇵🇼 619 210 19ms 18 days ago 279th annaproxy 619 309 129ms 4 Sep 2022 280th DialFrost 🇸🇬 618 180 639ms 18 Jan 2024 281st OllieBoyne 🇬🇧 617 211 10ms 19 Aug 2022 282nd jusaka 615 109 3ms 11 days ago 283rd postie77 615 193 409ms 24 Mar 2023 284th Lv0Sys 🇵🇱 615 254 343ms 28 Feb 2026 285th voytxt 🇨🇿 614 199 10ms 25 days ago 286th Artemis21 🇬🇧 614 212 16ms 3 Jan 2025 287th rucin93 🇵🇱 608 196 147ms 5 Jan 2025 288th alexsave 608 201 9ms 3 Jan 2026 289th bac0id 608 208 456ms 25 Jun 2024 290th InigoK 🇺🇸 608 214 18ms 22 Sep 2025 291st mathisfun271 605 215 10ms 12 Feb 2024 291st anter69 🇭🇺 605 215 18ms 7 Jul 2025 293rd weliveinhell 🇭🇹 602 203 10ms 19 Jul 2024 293rd helbling 🇨🇭 602 203 12ms 6 Sep 2024 295th TFeld00 🇩🇰 602 216 17ms 19 May 2022 295th andrewjc2000 602 216 29ms 15 May 2025 297th DialFrost 🇸🇬 595 201 6ms 18 Jan 2024 297th neel11235813 595 201 671ms 1 Apr 2024 299th ndren 594 219 28ms 22 Nov 2023 299th neel11235813 594 219 21ms 1 Apr 2024 First Prev 201–300 of 533 Next Last