01 / HK-TOOLS
उपकरण
चित्रों, दस्तावेज़ों, पाठ, डेटा और कोड के लिए ब्राउज़र टूल।
देखें:
चित्रPDFपाठडेवलपर
Hello, Keyboard
•
टूल · गेम · सीखना · एक स्पष्ट परिचय
टूल, गेम और सीखना सब एक ही जगह
काम के अनुसार टूल देखें, कोई वेब गेम चुनें या Education पर कीबोर्ड का अभ्यास शुरू करें।
www.hellokeyboard.com
उपलब्ध
02 / HK-GAMES
खेल
ब्राउज़र में पहेली, बोर्ड, कार्ड और आर्केड गेम तुरंत खेलें।
देखें:
पहेलियाँबोर्ड गेमआर्केडइंस्टॉल नहीं
03 / HK-EDU
शिक्षा
कीबोर्ड को चरण-दर-चरण सीखें और टाइपिंग गेम से अभ्यास करें।
देखें:
24 पाठकमज़ोर कुंजियाँटाइपिंग गेमस्थानीय प्रगति
01 / Tools Capabilities
Tools directory
Browse tools by common tasks. Open any item for the full directory and localized versions. 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
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
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
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
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
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
02 / Games Online
Featured games
Find a game by type. The Games site includes full descriptions, controls, sources, and license details.
GAME 01 · Logic puzzle
Playable
Classic Minesweeper
Minesweeper
Use the numbers to reason about nearby mines, flag risks, and clear the board safely.
GAME 02 · Number puzzle
Playable
Classic Sudoku
Sudoku
Fill 1–9 so every row, column, and box has no repeated number.
GAME 03 · Board strategyPlayable
Classic Checkers
Checkers
Move, jump, and capture pieces in a quick checkers match.
GAME 04 · Board strategyPlayable
Drop Four
Drop Four
Drop pieces and connect four of the same color horizontally, vertically, or diagonally.
GAME 05 · Card strategyPlayable
FreeCell
FreeCell
Use four free cells and four foundations to organize the deck and plan every move.
GAME 06 · Arcade actionPlayable
Snake
Snake
Guide a growing snake toward food while avoiding the walls and your own tail.
GAME 07 · Logic puzzlePlayable
Sokoban
Sokoban
Push every crate onto a goal while leaving room for the next move.
GAME 08 · Board strategyPlayable
Reversi
Reversi
Surround opposing pieces to flip them, then finish with more pieces on the board.
GAME 09 · Number puzzlePlayable
2048
2048
Slide and merge matching number tiles, aiming for a higher score before the board fills.
Games channel online
Browse all games
More games are on the way
Visit the standalone Games site for the full directory, instructions, sources, and licenses.
03 / Principles
Shared across the sites
टूल, गेम और सीखने का अनुभव अलग-अलग है; सभी में स्पष्ट नेविगेशन, ब्राउज़र पर सीधा उपयोग और पारदर्शी जानकारी मिलती है।
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.
Fast loading · no clutter
Lightweight code and modern static delivery load quickly, without long splash screens or intrusive pop-ups.
Keyboard first · work efficiently
Hello Keyboard was made for the keyboard. Shortcuts and keyboard navigation keep your hands moving efficiently.