GameParticles

Sudoku

Medium · every row, column and box needs 1 to 9

TIME
0:00
MISTAKES
0/3

1-9 to place · N notes · H hint · U undo · Space pause

Sudoku

Fill the grid so every row, column and 3x3 box contains 1 to 9

Press Enter for Medium

Tap a cell, then a number · notes mode for pencil marks

JSON Formatter
Developer · Format, validate and minify JSON with syntax highlighting.
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Base64 Encode / Decode
Developer · Encode text to Base64 or decode Base64 back to plain text.
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URL Encoder / Decoder
Developer · Encode or decode URL components and query strings.
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Hash Generator
Developer · Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.
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UUID Generator
Developer · Generate UUIDs v4 (random) in bulk with one click.
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Regex Tester
Developer · Test regular expressions against text with live match highlighting.
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Word Counter
Text · Count words, characters, sentences, paragraphs and reading time.
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Case Converter
Text · Convert text between UPPER, lower, Title, camelCase, snake_case and more.
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List Sorter
Text · Sort, reverse, deduplicate and shuffle lists of text.
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Markdown Preview
Text · Write Markdown and see a live rendered preview side by side.
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Percentage Calculator
Numbers · Calculate percentages, increases, decreases and what % one number is of another.
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Color Converter
Colors · Convert colors between HEX, RGB, HSL and HSV instantly.
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Snake
Arcade · Eat food, grow longer, don't hit the walls. A timeless classic.
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2048
Puzzle · Slide tiles and combine them to reach the legendary 2048 tile.
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Word Grid
Puzzle · Guess the hidden five letter word in six tries using color clues.
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Sudoku
Puzzle · Fill the 9x9 grid with logic. Four difficulties from easy to expert.
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