Util.Ninja

Free online games & handy tools

Daily word puzzles and quick browser games for a coffee break, and no-nonsense tools for everyday jobs: QR codes, word counts, images, passwords and code. Everything runs right in your browser.

Word puzzles Games Learn to type Browse tools
  • Free, no sign-up
  • Phone, tablet & PC
  • Nothing to install
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Word games

Ninja Wordly: a grid of green, yellow and grey letter tilesNEW

Ninja Wordly

A Daily Journey of 5 word puzzles: guess each 5-letter word in six tries. Plus unlimited Classic games, in 10 languages.

  • Daily Journey
  • 10 languages
  • Streaks
▶ Play
Honeycomb of seven letters with a golden centre letterNEW

Word Hive

A daily spelling bee: make words from 7 letters around a golden centre, find the pangram and climb to Queen Bee.

  • Daily puzzle
  • Spelling bee
  • Hints grid
▶ Play
Word tiles grouped in yellow, green, blue and purpleNEW

Word Groups

Sort 16 words into 4 secret groups with only 4 mistakes. A new connections puzzle every day in a calm tea house.

  • Daily puzzle
  • Connections
  • Archive
▶ Play
Glowing neon 4 by 4 letter gridNEW

Word Hunt

Swipe neighbouring letters to find words before the 3-minute timer runs out. Boggle-style 4×4 and 5×5 boards.

  • Timed
  • Daily board
  • Challenges
▶ Play
Word search grid with coloured highlights on parchmentNEW

Word Search

Find hidden words on an explorer’s parchment. 32 themes, three levels, a daily puzzle and printable answer keys.

  • 32 themes
  • Printable
  • Daily puzzle
▶ Play
A ninja hanging from glowing paper lanterns over a pondNEW

Hangman

Guess the word before the paper lanterns float away and the ninja splashes into the pond. Send secret words to friends.

  • Classic
  • 32 categories
  • Friend words
▶ Play

Games

Play instantly on phone or PC. Your progress is saved on your device.

Bubble Pop: colourful bubble shooter boards in candy, reef and space worldsNEW

Bubble Pop

Aim, shoot and match 3 bubbles to pop them, then cut whole clusters loose for huge bonuses. 50 levels in 5 worlds, Endless mode and 25 badges.

  • Bubble shooter
  • 50 levels
  • Endless mode
▶ Play
Parking Jam: a jammed parking lot full of colourful cars and trucksNEW

Parking Jam

The car park is jammed! Tap to drive cars out, drag them to make room, and find the right order. 50 levels, a Daily Journey and 25 badges.

  • Logic puzzle
  • 50 levels
  • Daily journey
▶ Play
Sudoku board with gold and cream tiles on a jade backgroundNEW

Sudoku

Unlimited puzzles from Easy to Expert plus a daily challenge, with hints that explain the logic like a coach.

  • Logic puzzle
  • Teaching hints
  • Challenges
▶ Play
Solitaire: Ace, King, Queen and Jack fanned on green casino feltNEW

Solitaire

Classic Klondike on green felt where every Draw 1 deal is winnable. Drag or tap, undo, hints, and challenge your friends.

  • Card game
  • Winnable deals
  • Challenges
▶ Play
2048 game board with coloured number tiles up to 2048NEW

2048

Slide the tiles, merge equal numbers and reach 2048. Classic 4×4 plus 3×3, 5×5 and 6×6 boards, with undo.

  • Puzzle
  • 4 board sizes
  • Undo
▶ Play
Dots / Tochki: red and blue dots on squared paper with captured areas

Dots / Tochki

The classic squared-paper strategy game. Close a loop around your opponent’s dots to capture them.

  • vs AI or a friend
  • Strategy
  • Stickers to collect
▶ Play
Hen House Dash: a fox with a basket catching eggs on a retro LCD handheld

Hen House Dash

Retro LCD handheld fun. Move the fox, catch every egg, and dodge the rabbit’s potatoes.

  • Arcade
  • 10 speed levels
  • Quick rounds
▶ Play
Gold Runner '94: retro platformer with ladders, bricks and gold

Gold Runner '94

Dig holes, trap the guards and grab all the gold in this DOS-style puzzle platformer.

  • Platformer
  • 50 levels
  • 3 difficulties
▶ Play

Learn

Interactive courses that teach real skills step by step, with theory, practice and games that put them to work. Free, and your progress is saved on your device.

Typing Dojo: a coloured keyboard on a sunset dojo backgroundNEW

Typing Dojo: learn to type

A free touch typing course with interactive theory, finger quizzes and drills. Animated hands show which finger to use while you earn 8 belts from White to Black.

  • 18 lessons from the home row to symbols
  • Smart practice for your weakest keys
  • WPM speed test and friend challenges
  • Shuriken Storm typing game and certificates
▶ Start learning
Jungle Jump: Kai with a leaf hat jumping across platforms with letter bubblesNEW

Jungle Jump: typing practice game

Put your Dojo skills to work in the jungle! Type the letter on each platform and Kai jumps; press a wrong key and he falls into the water. The Easy levels follow the Typing Dojo lessons key by key.

  • 45 levels: Easy, Medium and Hard
  • The most frequent English words and expressions
  • Timed flood levels and an endless Jungle Run
  • WPM, stars and 25 badges
▶ Play Jungle Jump
Penguin Trek: Pip the penguin running through ice, a summer forest and a red tunnel, with words to type above the obstaclesNEW

Penguin Trek: typing adventure

A colourful race across ice, sea, summer forests, desert and an underground tunnel! Type the words on holes, seals and icicles before they reach Pip the penguin, and the letters on fish and flags to catch them. The Easy stages follow the Typing Dojo lessons.

  • 63 stages in 21 landscapes: ice, sea, forest, summer, desert and underground
  • 7 bosses, from the Big Walrus to the Ice Yeti
  • The road speeds up inside every stage, from 10 to 46 WPM
  • Endless Expedition and 25 badges
▶ Play Penguin Trek
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Free online tools

Make, count, compress, generate and convert in one click. Free, fast and nothing to install.

QR code generator

Make QR codes for links, Wi-Fi, contacts, email and SMS. Add a logo, download PNG or SVG.

Password generator

Create strong random passwords, memorable passphrases and PINs, with a strength meter.

JSON minifier

Shrink JSON by stripping whitespace and line breaks.

GUID generator

Generate GUIDs / UUIDs instantly and learn how they work.

No tool matches that search. Try “qr”, “image” or “json”.

About Util.Ninja

Util.Ninja is a small collection of free browser games, interactive learning courses and practical online utilities. Typing Dojo teaches touch typing step by step, from the home row to a Black Belt. The games are written from scratch in plain HTML5 and work on phones, tablets and computers with touch, mouse or keyboard. The tools cover everyday jobs, from making QR codes, counting words, compressing photos and creating strong passwords to formatting JSON, Base64 and URL encoding and minifying code.

There is nothing to install and no account to create. Game progress and settings are saved only in your own browser.

Popular right now

  • Ninja Wordly: a Daily Journey of 5 word puzzles in 10 languages
  • Typing Dojo: learn to type without looking, free course and speed test
  • Jungle Jump: typing practice game with the most frequent English words
  • Penguin Trek: retro 8-bit penguin typing adventure with bosses
  • Sudoku: free puzzles from Easy to Expert, plus a daily challenge
  • Solitaire: classic Klondike, Draw 1 or Draw 3
  • 2048: slide and merge the number tiles
  • Dots / Tochki: the classic squared-paper strategy game
  • QR code generator: links, Wi-Fi and contacts
  • Image compressor: smaller photos, no upload
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