The tools you need, when you need them

Browser-only where that's enough, account-backed where saving and sharing matter. Most tools work fully without signing in.

Files

4

Document viewer Open Office and Hangul documents without the apps. Files are never uploaded. Open

Folder structure builder Write a tree and download it as a ZIP of real folders and files. For scaffolding a project in one go. Open

Bulk file tools Rename many files by rule, generate name lists, and make dummy files for testing. Open

File sharing Upload a file and get a share link. Set expiry, password and download limits per link. Open Account needed

Images

3

Image compress & convert Shrink photos and change size or format. Everything runs in your browser — originals never leave it. Open

QR code generator Turn links, Wi-Fi and contacts into a QR. Drawn in your browser, so what you type never leaves it. Open

Business card maker Type your details and get a print-ready card — 300dpi PNG plus a contact QR and vCard. Open

Work

7

Notes & to-dos Notes, to-dos and tags in one place. Sign in and it autosaves and syncs across devices on any plan. Open

Split settlement Log what each person spent per item and get the exact transfers that settle it up. Open

Token & cost calculator Estimate how many tokens your text is and what each model would cost. Your text never leaves the browser. Open

Developer tools JSON formatting, Base64, JWT decoding, hashes, color conversion and meta tags — all in your browser. Open

Pomodoro timer 25 minutes of focus, 5 of rest, alternating automatically. Today's count stays on this device. Open

Mental math drill Numbers flash on screen and vanish. You hold them in your head, not your eyes, and add or multiply. Open

Device check Check that the screen, touch, sound, vibration, sensors and camera actually work. Handy for a second-hand device. Open

Free tools, paid scale

Every tool feature is free — autosave, cross-device sync, link passwords and download limits included. Plans only set scale: file size, storage, how long links live, and document count.