Code Editor
Build and preview small web pages with HTML, CSS, and JS in a tabbed workspace.
Open toolFile Name Generator
Generate clean asset filenames from prefixes, categories, and extensions, then copy them fast.
Open toolText Case Converter
Convert pasted text into common cases, slugs, and cleanup formats in one place.
Open toolNotes
Capture notes locally, export TXT files, and sync with Google/Firestore when signed in.
Open toolYouTube Audio Player
Listen to YouTube audio with playlists, resume state, and repeat controls.
Open toolQR Code Generator
Turn links or plain text into QR codes with live preview and PNG export.
Open toolTask List
Track dated tasks, mark progress, and store the list locally as JSON.
Open toolPhrase Library
Keep reusable Vietnamese and English writing snippets ready for quick copy.
Open toolContact Form
Send secure Gmail SMTP contact messages with optional PDF, Word, or Excel attachments.
Open toolSimple Chat
Chat on localhost with remembered names, live updates, and JSON message history.
Open toolWebsite Bookmarks
Save favorite websites with tags, notes, search, and local JSON storage.
Open toolDonate a Coffee
Support this small toolbox with a 1 USD coffee donation through PayPal.
Donate $1