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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Add Watermark to PDF
Add a text or image watermark to a PDF: choose colour, transparency, angle, size, centred or tiled, all or some pages. Free and private.
Mark documents as CONFIDENTIAL, DRAFT or COPY, or brand them with your logo. Choose the colour, transparency and angle, place the watermark in the centre or repeat it across the page, and apply it to all pages or only some.
The watermark is added on your own device; your PDF is never uploaded.
How to use Add Watermark to PDF
- Click “Choose PDF file” or drop your PDF onto the page.
- Choose Text (and type it) or Image (and pick a PNG or JPG logo).
- Set transparency, angle, size and centred or tiled layout — the thumbnails show a preview.
- Optionally limit it to some pages, then click “Add watermark” and download.
Features
- Text or image (PNG with transparency, or JPG) watermarks.
- Any colour, 5–100 % visibility, 0°, 45° or 90°.
- Centred or tiled across the whole page.
- All pages or a page range such as 1-3, 6.
- Stays upright on rotated pages; no upload, no sign-up.
Frequently asked questions
Can a watermark be removed?
A watermark added to a PDF can be edited out with advanced PDF editors. To make removal much harder, use “Flatten everything” in Flatten PDF afterwards, which turns pages into images.
Can I use my logo?
Yes. Choose Image and pick a PNG or JPG. PNG logos with a transparent background look best.
Which languages can I type?
Latin letters (English, French, Spanish, German…) and common symbols. Other scripts such as Hindi or Chinese are not supported in text watermarks yet — use an image watermark instead.
Are my files uploaded?
No. The watermark is added in your browser; nothing leaves your device.