Browser-based Tool Catalog

Place furniture, fixtures, and appliances to simulate room layout and movement flow directly in your browser.

Apply mosaic, crop, and export images entirely in your browser without uploading them. Built for privacy-first local processing.

Plan coordinates across Overworld, Nether, and End with local-only markers and Nether gate links.

A print-focused suite with a box dieline generator and a UI sketch grid sheet. Configure dimensions and print at true scale.

Arrange text and images to create tabletop POP stand dieline PDFs. Preview in 3D and print at true scale.

A browser-based diagram editor using Mermaid.js. Create flowcharts, sequence diagrams, and more—saved locally across multiple files.

Transform your messages into emoji ciphers using a secret passphrase. Have fun exchanging secret messages with friends!

A timer that displays a beautiful hourglass on your screen. Watch the sand flow while you focus, cook, or run a quick game.

A beautiful countdown timer you can blow up to full screen. Great for streams, events, and classrooms where everyone watches the clock together.

Convert PNG and JPEG images to the lightweight, high-quality WebP format right in your browser. Batch convert without uploading anything.

A real bingo machine that runs in your browser. Press the button and a random number is drawn. Fullscreen mode makes it perfect for parties and kids' events.

A real 3D dice roller in your browser. Roll 1 to 6 dice at once, with auto sum and history. Great for board games, RPGs, and quick decisions.

Paste your text and instantly see characters, lines, paragraphs, words, and manuscript page counts. Perfect for social drafts and writing — runs entirely in your browser.

An immersive full-screen digital clock. Mix clock styles, theme colors, 24h/12h, seconds, font weight, Zen Mode, and auto theme switching to build your ideal focus clock.

An immersive full-screen analog clock. Mix face styles, theme colors, second hand, smooth ticking, date, and Zen Mode to build your ideal focus clock.

A full-screen online stopwatch with a large, legible display. Start, stop, lap, and reset with one click. Combine styles, theme colors, and milliseconds freely.

Look up the Japanese zodiac, Western/kazoe age, Japanese era, yakudoshi, longevity celebrations, school years, and generation from any birth year. Searchable 1920-2050 table.

A multilingual Amidakuji (ghost-leg lottery) for 2 to 200 players, with group-split mode, adjustable density, reveal animation, URL sharing, image export, and local history.

Create your own custom omikuji fortune and share it with friends. Set fortunes and messages, generate a short URL. No login required.

Convert non-progressive MP4 files to Fast Start in your browser. Reorders the moov atom to the front—no re-encoding, so quality and size are preserved.