Hello, Keyboard • Practical tools and web games, from here

Hello Keyboard.

Welcome to Hello Keyboard. Find our livebrowser-first, privacy-friendlytools here, then head toPlay instantlygames on the Games channel.

2 core sites

6+ tool categories

9 games live

100% local browser runtime

Subsites Directory

Channels and modules

The main site introduces the ecosystem while each channel keeps its full experience on its own subdomain.

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01 / HK-TOOLS

Tools site · Tools

Live

A focused set of everyday tools for work and development. We keepprocessing in your browser; files stay on your device with no upload or waiting. English is the default, with localized entries available.

Core areas:

Image compression / conversion PDF tools CSS experiments Data conversion Text cleanup Developer utilities

🕹️

02 / HK-GAMES

Games site · Games

Live

A live collection of lightweight web games. It currently offers 9 classic puzzle, board, and arcade games withno download or account, plus keyboard and touch controls.

Available now:

Classic Minesweeper Classic Sudoku Touch support Keyboard controls Play instantly Clear sources

01 / Tools Capabilities

What can the Tools site do?

The Tools site is live. This overview keeps the main capabilities in one place; open the full directory for every tool and language. Open the full tools directory ↗

IMG Local processing

Image and media workbench

Compress, convert, crop, resize, and sample colors locally for everyday design work.

WebP / PNG / JPG conversion
Batch compression in the browser
Smart crop and resize
Color picker and palette

Live Open image tools ↗

PDF Private by default

PDF document console

Merge, extract, convert, and reorder PDF pages locally so sensitive documents stay on your computer.

Merge multiple PDFs
Extract, delete, and reorder pages
Render PDF pages to images
Clean and edit metadata

Live Open PDF tools ↗

CSS Visual editing

CSS and design lab

Tune gradients, shadows, Bézier easing, and glass effects visually, then copy clean production CSS.

Linear and radial gradient builder
Soft box-shadow tuning
Cubic Bézier visualizer
Glassmorphism code preview

Live Open CSS tools ↗

DATA Fast conversion

Data formatting and conversion

Format, validate, and convert structured data with expandable trees for large text payloads.

JSON validation, formatting, and tree view
JSON ↔ YAML ↔ TOML conversion
CSV and table / JSON conversion
Base64 and URL encoding

Live Open data tools ↗

TXT Everyday processing

Text cleanup desk

Deduplicate, count, normalize, sort, and clean Markdown without repetitive manual work.

Word, line, character, and frequency counts
Deduplicate, sort, and prefix lines
Normalize whitespace and bilingual spacing
Markdown preview and plain-text extraction

Live Open text tools ↗

DEV Ready to use

Developer quick reference

Fast checks for regex, JWT payloads, timestamps, hashes, and other daily coding tasks.

Live regex matching and explanation
JWT decoding and expiry checks
Unix timestamp ↔ date conversion
MD5 / SHA256 hashes and subnet math

Live Open developer tools ↗

02 / Games Online

Games you can play now

The Games site is live. All 9 games open directly with desktop keyboard and mobile touch support, plus clear upstream sources and licenses.

GAME 01 · Logic puzzle Playable

Classic Minesweeper

Minesweeper

Use the numbers to reason about nearby mines, flag risks, and clear the board safely.

TouchKeyboardPlay now ↗

GAME 02 · Number puzzle Playable

Classic Sudoku

Sudoku

Fill 1–9 so every row, column, and box has no repeated number.

TouchKeyboardPlay now ↗

GAME 03 · Board strategyPlayable

Classic Checkers

Checkers

Move, jump, and capture pieces in a quick checkers match.

TouchKeyboardPlay now ↗

GAME 04 · Board strategyPlayable

Drop Four

Drop pieces and connect four of the same color horizontally, vertically, or diagonally.

TouchKeyboardPlay now ↗

GAME 05 · Card strategyPlayable

FreeCell

Use four free cells and four foundations to organize the deck and plan every move.

TouchPlay now ↗

GAME 06 · Arcade actionPlayable

Snake

Guide a growing snake toward food while avoiding the walls and your own tail.

KeyboardPlay now ↗

GAME 07 · Logic puzzlePlayable

Sokoban

Push every crate onto a goal while leaving room for the next move.

KeyboardPlay now ↗

GAME 08 · Board strategyPlayable

Reversi

Surround opposing pieces to flip them, then finish with more pieces on the board.

TouchKeyboardPlay now ↗

GAME 09 · Number puzzlePlayable

2048

Slide and merge matching number tiles, aiming for a higher score before the board fills.

TouchKeyboardPlay now ↗

Games channel online

More games are on the way

Visit the standalone Games site for the full directory, instructions, sources, and licenses.

Browse all games

03 / Principles

Why Hello Keyboard?

We keep tools focused and games lightweight, returning to the simple promise of the web.

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Privacy first · local processing

Sensitive PDFs, company data, and personal photos stay in the browser sandbox. Private files are never uploaded to a third-party server.

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Fast loading · no clutter

Lightweight code and modern static delivery load quickly, without long splash screens or intrusive pop-ups.

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Keyboard first · work efficiently

Hello Keyboard was made for the keyboard. Shortcuts and keyboard navigation keep your hands moving efficiently.