Piano Garden
Free tools that run in your browser
Calculators, images, PDFs, text, mind maps, and quizzes in one place. No install—each tool includes how-to steps, caveats, and FAQ.
Suggested workflows
Image prep
Documents
Social captions
Study & planning
What is Piano Garden?
Piano Garden is a suite of practical browser utilities—no account and no app install. You can move from everyday math to web-ready images, PDF cleanup, SNS copy polish, idea mapping, and light personality quizzes on one domain.
We do more than list tools. Each page explains when to use it, what inputs matter, and what to check when results look wrong. The guides go deeper on topics people often get stuck on: compression targets, BMI and loan caveats, Instagram caption spacing, and more.
The goal is not a one-click gadget farm. It is a place first-time visitors can understand, finish a task, and come back with a clearer workflow next time.
Browse by category
Calculators
Basic, scientific, percentage, BMI, units, currency, dates, loans, and age. Finance and health figures are for reference only—not a substitute for official documents or medical advice.
Images
Compress, convert, crop, mosaic, blur, pick colors, and remove backgrounds in the browser. Use them before uploading to the web, stores, or social feeds.
Merge files in order or split by page range. Open password-protected or damaged scans first so merges do not fail mid-way.
Text
Character counting and Instagram caption line-break helpers. Platforms count spaces and emoji differently—preview once more before posting.
Mind maps
Branch from a central topic for study, meetings, and brainstorming. Outline and Gantt-style views help you see structure and timing together.
Quizzes
Light self-exploration such as Egen-Teto and personality-style tests. Treat results as conversation starters—not diagnosis, hiring criteria, or labels for discrimination.
Local-first processing & privacy
Browser-side image, PDF, and text features aim to keep files on your device whenever possible. Only flows that need public market data (such as FX rates) call external APIs.
Preferences like language and theme may use cookies or local storage, and we may collect access or error logs to run the site. When ads appear, partners such as Google AdSense may use cookies. See the Privacy Policy for details.
Guides worth reading
- Compress images for the web — A checklist for display size, format, and quality that protects page speed.
- Merge PDFs online — Order, passwords, and blank pages—how to ship a clean combined file.
- Instagram caption breaks — Why empty lines vanish and how to verify spacing in preview.
- Understanding BMI — The formula, interpretation limits, and why it is not a health decision.