Useful tools that keep your files to yourself.
Edit PDFs, focus with a tiny living planet, and keep a diary only you can open. Everything runs right here in your browser — nothing is ever uploaded.
PDF Stage
Edit, build and reformat PDFs
Invert dark PDFs so they are readable and cheap to print, add pages and text, drop in images, reorder, crop, and apply notebook or grid backgrounds. Built for students, useful for anyone.
- Invert colours for print-friendly pages
- Add text, images and blank pages
- Reorder, rotate and crop
- Autosaves locally as you work
Timelapse
Focus sessions that build a streak
A no-pause focus timer. Watch a day pass over a living little planet while you work, then share the streak card you earned.
- No-pause focus sessions
- A living planet with day and night
- Pomodoro rounds, or one unbroken block
- Shareable streak cards with a QR code
Secret Vault
A diary only you can open
Password-protected diaries with photos and voice notes, saved only on your device. Share a diary as a file that opens nowhere else.
- Locked with your password — nothing is uploaded
- Diary files that open only in this app
- Voice notes & photo attachments
- Notes can be set to self-destruct
Quick PDF tools
One job each — drop a file, get the result.
- Invert PDF Colors Invert PDF colors for ink-saving printing or dark-mode reading.
- Create PDF Start a fresh PDF from scratch.
- Add Pages Insert extra pages into a PDF.
- Add Text Type text and annotate PDF pages.
- Page Themes Apply grid and paper backgrounds to pages.
- Add Image & Signature Place images and signatures on PDF pages.
- Reorder Pages Rearrange, rotate or delete pages.
- Crop PDF Margins Trim margins and whitespace from pages.
Your files stay yours.
Every tool on this site works entirely inside your browser. Your documents are never sent to a server — there is no server to send them to.
- No account needed
- No file uploads, ever
- Works offline once loaded
- Work saves automatically on your device