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.
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Annotate PDF
Annotate a PDF: highlight text, draw, add text notes and boxes in five colours, with undo. Free, private, in your browser.
Mark up documents for review, study or feedback: highlight important passages, circle or frame things, scribble with a pen and add short notes — on a computer, tablet or phone.
Annotations are drawn into the pages when you save, so they look the same in every PDF reader. Your file never leaves your device.
How to use Annotate PDF
- Click “Choose PDF file” or drop your PDF onto the page.
- Choose a tool — Highlight, Draw, Text or Box — and a colour.
- Mark up the page; use ‹ › to go to other pages. Move or delete highlights, boxes and notes; Undo removes the last mark.
- Click “Save annotated PDF” and download.
Features
- Highlighter that blends with the text, freehand pen, text notes and boxes.
- Five colours; undo; move and delete marks.
- Works with mouse, touch and stylus.
- Marks appear the same in every PDF reader.
- No upload, no sign-up, no watermark.
Frequently asked questions
Can I edit the annotations later in another program?
They are drawn into the page, which makes them look the same everywhere but means they can't be edited as separate comments later. Keep your original file if you might want to change them.
Which characters can I type in notes?
Latin letters and common symbols. Other scripts such as Hindi or Chinese are not supported in notes yet.
Can I annotate on a tablet with a pen?
Yes — choose Draw and write with the stylus or your finger.
Are my files uploaded?
No. Everything happens in your browser on your device.