How to add your company name as a watermark to a pdf
- Step 1Open the watermark tool and load the document — Drop the PDF into pdf-watermark. It marks one file per run.
- Step 2Replace the default text with your company name — The text field defaults to
CONFIDENTIAL; type your company name exactly as you want it to read, e.g.Acme AnalyticsorAcme Analytics Ltd. - Step 3Pick a subtle opacity — For a brand marking that supports rather than fights the content, 0.10–0.18 works well. The field accepts 0.05–1.0 in 0.05 steps; the default is 0.15.
- Step 4Set the font size — Default 60 pt gives a large, central name on a standard page. For a longer company name, the tool auto-shrinks it to fit, so you can leave 60 and let it scale.
- Step 5Apply to every page — Run the tool. Your company name is drawn diagonally and centred on all pages — uniform branding with no per-page setup.
- Step 6Download the branded PDF — Save and distribute. Keep the clean original for internal use. If you need a logo or brand colour instead of a grey text name, see pdf-stamp.
Text watermark vs. logo/brand-colour needs
This tool is text-only in fixed grey. Match your need to the right tool. Verified against the implementations.
| You want… | Right tool | Why |
|---|---|---|
| Company name across every page | pdf-watermark (this tool) | Fast, consistent diagonal text marking |
| Your logo on every page | pdf-stamp | Overlays a single-page graphic (your logo PDF) onto each page |
| A specific brand colour | pdf-stamp | Watermark colour here is fixed grey; a coloured graphic must be stamped |
| Letterhead on every page | pdf-stamp | Composite a letterhead PDF over the base document |
| Sequential page IDs | pdf-page-numbers | Positioned numbering, not a diagonal watermark |
What the watermark tool exposes
Three inputs; everything else is fixed. Real values from the UI and engine.
| Property | Control | Range / value |
|---|---|---|
| Company name (text) | Text input | Any string (default CONFIDENTIAL) |
| Opacity | Number input | 0.05 – 1.0, step 0.05 (default 0.15) |
| Font size | Number input | 12 – 200 pt (default 60) |
| Colour | Fixed | Mid-grey (no picker) |
| Angle | Fixed | -45° diagonal, centred |
| Font | Fixed | Helvetica Bold |
| Pages | Fixed | All pages |
Tier limits for the document
One file per run; limits on input size and pages. Real tier values.
| Tier | Max file size | Max pages |
|---|---|---|
| Free | 2 MB | 50 |
| Pro | 50 MB | 500 |
| Pro + Media | 500 MB | 2,000 |
| Developer | 2 GB | 10,000 |
| Enterprise | Unlimited | Unlimited |
Cookbook
Branding setups using the three available controls. The watermark text carries your company name.
Subtle company-name branding on a proposal
A light marking that reinforces ownership without distracting from the pitch.
text: Acme Analytics opacity: 0.12 fontSize: 60 → faint diagonal company name on every page; the proposal stays the focus.
Stronger marking for a publicly-shared white paper
When a document will circulate widely, a more visible name makes re-use traceable.
text: Acme Analytics opacity: 0.18 fontSize: 60 → clearly visible attribution on every page of the downloadable PDF.
Long company name that needs to fit
A full legal name is wide; let the auto-scaling handle it rather than guessing a small font.
text: Northwind Logistics International Ltd opacity: 0.15 fontSize: 60 → the tool shrinks the font below 60 so the whole name fits ~72% of the page diagonal, centred.
Name plus a tagline-style label
Combine ownership and a status/context note in one marking.
text: Acme Analytics — PROPRIETARY opacity: 0.16 fontSize: 54 → company name and handling note in a single diagonal watermark across all pages.
Use a logo instead (different tool)
The watermark tool can't place a logo or a brand colour — chain to the stamp tool for that.
For a grey TEXT name → pdf-watermark (this tool) For a LOGO or brand COLOUR → pdf-stamp: 1. export your logo to a single-page PDF 2. overlay it on every page of the base document → pick the tool that matches text vs. image branding.
Edge cases and what actually happens
You want your logo, not text
Not supportedThis is a text-only watermark — there's no image input. To brand pages with your actual logo, export the logo to a single-page PDF and overlay it with pdf-stamp, which composites that page onto every page of the document.
You need the watermark in your brand colour
Not supportedThe watermark colour is fixed mid-grey; there's no colour or hex control. For a coloured brand marking, create a coloured watermark graphic and apply it via pdf-stamp instead.
Long legal company name
PreservedA long name doesn't run off the page — the tool measures the text and shrinks the font (to a 16 pt floor) so the watermark spans about 72% of the page diagonal, keeping the full name centred and on-page.
You want the name only on cover and back pages
Not supportedThere's no page-range option — the company name is applied to every page. To brand a subset, extract those pages with pdf-extract-pages, watermark them, and merge back with pdf-merge.
Pages have full-bleed coloured backgrounds
Reduce opacityGrey text at low opacity can wash out over busy or coloured backgrounds. Raise the opacity toward 0.20–0.25 so the company name reads against the design, accepting it'll be more prominent over plain pages.
You forgot to change the default text
Falls back to CONFIDENTIALThe text field defaults to CONFIDENTIAL, and an empty field also falls back to CONFIDENTIAL. Make sure your company name is typed in before running, or you'll brand the document with CONFIDENTIAL instead.
Free-tier file over 2 MB or 50 pages
RejectedFree tier limits input to 2 MB and 50 pages. A large illustrated brochure may exceed this — upgrade to Pro (50 MB / 500 pages) or compress images first with pdf-compress-lossy.
The branded PDF still needs the original retained
By designThe name is drawn into the page content and can't be toggled off, so keep your clean source. If you later need a name-free version, re-export from the original rather than trying to strip the watermark.
You want a logo and the name together
Chain two toolsWatermark the document with this tool for the diagonal grey name, then overlay your logo with pdf-stamp — the two operations stack, giving you a text name plus a logo on every page.
Frequently asked questions
Can I add a company logo instead of text?
Not with this tool — it watermarks text only, in a fixed grey. For a logo, use pdf-stamp: export your logo to a single-page PDF and the stamp tool overlays it on every page of the base document. You can even run both — name watermark first, logo stamp second — to get text plus a logo.
Can the watermark use my brand colour?
No. The watermark is always rendered in mid-grey; there's no colour picker or hex field. To match brand colours you'd create a coloured watermark graphic and apply it with pdf-stamp instead. This tool is purpose-built for a clean, consistent grey text marking.
Will the company name appear on every page, including the cover?
Yes — the watermark is applied to all pages, with no way to exclude individual pages. If you want a clean cover, the workaround is to extract the body pages with pdf-extract-pages, watermark only those, and reassemble with pdf-merge.
Can I use white text for a subtle watermark on dark pages?
No — the colour is fixed mid-grey, so white text isn't available. On dark or full-bleed pages, the grey will read better at a higher opacity (around 0.20–0.25). If you genuinely need white, build a white watermark graphic and apply it with pdf-stamp.
Will a long company name fit on the page?
Yes. The tool measures your text and, if it's too wide, shrinks the font (down to a 16 pt minimum) so the name spans about 72% of the page diagonal and stays centred. A long legal name simply renders smaller rather than overflowing.
What opacity looks most professional for company branding?
0.10–0.18 reads as a tasteful background marking on most documents. The default is 0.15. Go lower (0.08–0.10) for a very subtle ownership cue; go higher (0.20–0.25) when the document will circulate publicly and you want attribution to be obvious.
Can I watermark a whole folder of documents at once?
The tool processes one PDF per run, so it isn't a folder/batch tool. Run each document individually. Since processing is local and quick, branding several files in sequence is fast.
Is the angle or font adjustable?
No — the watermark is always bold Helvetica, drawn diagonally at -45° and centred. Those are fixed to keep every branded document consistent. Only the text, opacity, and font size are adjustable.
Does my proprietary document get uploaded?
No. The watermarking runs entirely in your browser — the PDF is loaded, branded, and saved on your device, and never reaches a server. That makes it safe for confidential proposals, pricing, and reports.
Can I put a website or copyright line in the watermark?
Yes — the text field is free-form, so acme.com or © Acme Analytics 2026 works. Keep it reasonably short or rely on auto-scaling; very long strings will render at a smaller font to stay within the page.
How large a document can I brand on the free tier?
Free tier allows up to 2 MB and 50 pages. Pro raises it to 50 MB / 500 pages, Pro + Media to 500 MB / 2,000 pages, and Developer to 2 GB / 10,000 pages, with Enterprise unlimited. Compress image-heavy brochures with pdf-compress-lossy if they're over the limit.
Can the watermark be removed later?
It's drawn into the page content, so there's no one-click removal. Keep your original un-watermarked file; if you need an un-branded version, re-export from that source rather than editing the marking out of the branded copy.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.