PDF Lab
A free PDF editor that runs entirely in your browser.
Open a PDF (or start blank), add text, drawings, shapes, images, signatures, stamps, and classroom tools, reorder / rotate / merge / split / extract pages, redact securely, then export a clean PDF. Files never leave your device — no uploads, no accounts.
The problem
Permission slips, IEP forms, and worksheets arrive as PDFs that need a signature, a page removed, or a student's name redacted — and the "free" editors online want an upload, an account, and a subscription before you can save.
How PDF Lab helps
PDF Lab does the editing in your browser. Fill forms, type on the page, sign, stamp, reorder or merge pages, black out what should never leave the building, and download the result. The file never goes to a server, which is exactly how school documents should be handled.
6 things, done properly
Edit and fill
Add text, drawings, shapes, images, signatures, stamps, and classroom tools; fill PDF forms directly.
Organize pages
Reorder, rotate, merge, split, and extract pages — then export a clean PDF.
Secure redaction
Redact names and details so they are truly removed, not just covered.
Export your way
Download a PDF, save pages as PNG images, or print.
Nothing leaves your device
No uploads, no account, no ads. Documents autosave in your browser only.
Works fully offline
After the first load, PDF Lab works without internet.
Works on the devices your school already has
Any modern browser. Works fully offline after the first load.
Privacy & data, in one table
| Where data lives | IndexedDB (autosave on device) |
|---|---|
| Cloud storage | None — nothing is uploaded. |
| Service providers | None |
| Student data leaves the device? | Handled on the device only; it never leaves it. |
| Retention | Documents autosave in your browser only; nothing is uploaded. Delete anytime in More → Delete saved data. |
| Export | PDF download · page images (PNG) · print |
| Deletion | More → Delete saved data (clears autosave, saved signatures, recent names). |
Full details: Privacy Policy · Student privacy · District handout
No catch
PDF Lab is free
No account · no ads · no upsell
- No sign-in and nothing to subscribe to
- Files never leave your device
- Our thank-you to teachers — the rest of the toolkit is one All-Access subscription
Questions teachers ask
Is PDF Lab really free?
Yes. It is free for everyone, with no account, no ads, and no upsell. It is our thank-you to teachers.
Where do my files go?
Nowhere. Editing happens in your browser; documents autosave on your device only. Delete them any time in More → Delete saved data.
Can students use it?
There is no sign-in, so anyone can open it. Documents stay on whatever device was used.
Does it handle large scans?
It handles typical classroom PDFs well. Very large scans depend on the memory of the device you are using.
Pairs well with
Ready to try PDF Lab?
No sign-in — it opens right in your browser.