Free online tools that run in your browser
Your files never leave your device · No login required · 100% free
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Why LMPB Tools?
Simple, private tools that just work — right in your browser.
- Private Everything runs in your browser. Files are never uploaded.
- No login required No account, no sign-up, no email. Just open a tool and use it.
- Fast No upload or download wait — results appear instantly.
- Free All tools are free to use, with no limits.
- Works everywhere Phone, tablet or computer, in any modern browser.
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Frequently asked questions
Are my files or text uploaded anywhere?
No. Every tool runs inside your browser on your own device. Nothing you enter or open is sent to a server.
Do I need to create an account or log in?
No login is required. There are no accounts — open any tool and start using it straight away.
Are the tools really free?
Yes. All tools are free, with no limits or watermarks. The site is supported by ads.
Does it work on my phone?
Yes. The tools work in any modern browser on phones, tablets and computers.
Can I use the tools offline?
Once a tool has loaded it does its work on your device, so it keeps working even if your connection drops.
All tools
Protect PDF
Password-protect a PDF with AES-256 encryption and optionally restrict printing, copying and editing — encrypted in your browser.
Encrypt a PDF before you email or upload it, so only people with the password can open it. Optionally stop them from printing, copying text or editing.
Encryption happens on your own device with strong AES-256 — the same standard banks use. Neither your file nor your password is ever sent anywhere.
How to use Protect PDF
- Click “Choose PDF file” or drop your PDF onto the page.
- Type a password (the meter shows how strong it is) and repeat it.
- Untick what people shouldn't be allowed to do: print, copy, edit.
- Click “Protect PDF” and download the encrypted file.
Features
- AES-256 encryption — the strongest PDF standard.
- Optional restrictions on printing, copying and editing.
- Password strength meter and show / hide.
- Opens in Adobe Reader, browsers, Preview and every modern PDF app.
- No upload: file and password stay on your device.
Frequently asked questions
Can you recover my password if I forget it?
No. The password never leaves your device and isn't stored anywhere, so nobody can recover it. Keep it somewhere safe.
How strong is the protection?
AES-256 with a good password (12+ characters mixing letters, numbers and symbols) is practically impossible to break. Short or common passwords can be guessed.
Do restrictions really stop printing and copying?
Most PDF readers respect them, but some tools ignore them. The open password is what really protects the content.
Is my file uploaded?
No. The PDF is encrypted by your own browser.