Stamp CONFIDENTIAL, DRAFT or your name across every page.Open tool →
Add it in your browser
Open Watermark PDF, type the text, pick red, grey or navy and light, medium or strong opacity, then drop in your PDF. A diagonal watermark is added to every page and the file downloads automatically.
Which text to use
DRAFT for documents under review, CONFIDENTIAL for internal or NDA-covered material, SAMPLE or PREVIEW for work sent before payment, and your company name for proposals.
Opacity matters
Medium (around 25%) is readable without hiding content. Use strong for previews you don't want reused.
Limits
Anyone with PDF editing software can remove a watermark. For sensitive files, also control who you send them to.
Frequently asked questions
Can I use my logo?
Text watermarks only for now.
Is my PDF uploaded?
No.
Does it work on scanned PDFs?
Yes.
Stamp CONFIDENTIAL, DRAFT or your name across every page.Open tool →
More guides
- 📖 How to Open HEIC Files on Windows (3 Easy Ways)
- 📖 How to Reduce Image File Size Without Losing Quality
- 📖 How to Combine PDF Files into One (Free, No Upload)
- 📖 How to Remove Location Data from Photos Before Sharing
- 📖 How to Make a Wi-Fi QR Code (Guests Scan to Connect)
- 📖 How to Check Your DMARC and SPF Records (and Fix Them)
- 📖 How to Convert a PDF to JPG (Every Page as an Image)
- 📖 Social Media Image Sizes Cheat Sheet (2026)
- 📖 How to Reduce Photo Size to 100 KB (or 50 KB) for Online Forms
- 📖 How to Turn Photos into One PDF (iPhone, Android & PC)
- 📖 How to Make a QR Code for Your Restaurant Menu (Free, No Expiry)
- 📖 Your Password Was in a Data Breach – What to Do Now
- 📖 How to Fix the "Not Secure" Warning on Your Website
- 📖 How to Create a Strong Password You Can Actually Remember
- 📖 How to Calculate Percentage Increase and Decrease (with Examples)
- 📖 How to Record Your Screen on Windows or Mac Without Installing Anything
- 📖 How to Write an Invoice: What to Include (Freelancers & Small Businesses)
- 📖 How to Make a Round Profile Picture (Transparent PNG)
- 📖 How to Reduce PDF File Size for Email and Upload Forms
- 📖 How to Extract or Remove Pages from a PDF (Free)
- 📖 How Many Words Is a 5-Minute Speech? (Plus 1-30 Minute Chart)
- 📖 How to Watermark Photos (Without Ruining Them)
- 📖 The Pomodoro Technique: How 25-Minute Sprints Beat Procrastination
- 📖 How to Convert cm to Inches (and Inches to cm) Fast
- 📖 How to Schedule a Meeting Across Time Zones (Without Mistakes)
- 📖 How Much House Can I Afford? The Simple Rules Lenders Use
- 📖 What Is a Healthy BMI? How to Calculate and Read Your Result
- 📖 How to Format, Validate and Fix JSON Errors
- 📖 Why Are Images Saving as WebP? (And How to Get JPG Instead)
- 📖 How to Copy Text from an Image or Screenshot (OCR)
- 📖 How to Sign a PDF Without Printing It
- 📖 How to Scan a QR Code from a Screenshot or Photo
- 📖 How to Tell if a Link Is Safe Before You Click It
- 📖 On-Page SEO Checklist: 13 Things to Fix on Every Page
- 📖 How to Tell if an Email Is Fake (Check the Headers)
- 📖 How to Add a Favicon to Your Website (WordPress, Shopify & HTML)
- 📖 How to Make a GIF from Photos (Free, No App)
- 📖 How to Check Who Owns a Domain (and When It Expires)
- 📖 How to Blur Faces, Number Plates and Private Info in Photos
- 📖 How to Post a 3×3 Instagram Grid (Puzzle Feed) the Right Way
- 📖 How to Crop a Photo to an Exact Size or Ratio
- 📖 How to Verify a File Checksum (SHA-256, MD5) on Any Computer
- 📖 301 vs 302 Redirects: Which to Use (and How to Check Yours)
- 📖 How to Create and Submit a Sitemap to Google
- 📖 WCAG Color Contrast Explained: AA vs AAA (With Examples)
- 📖 Title Case Rules: Which Words to Capitalize in Headlines
- 📖 How to Add Page Numbers to a PDF (Without Acrobat Pro)
- 📖 How to Make a QR Code with Your Logo That Still Scans
- 📖 JPG vs PNG vs WebP vs HEIC: Which Image Format Should You Use?
- 📖 How to Use UTM Parameters to Track Your Marketing (GA4)
- 📖 How to Compare Two Documents and Find the Differences
- 📖 How to Change the Font in Your Instagram Bio (Bold, Italic & More)
- 📖 How Loan Interest Works: Monthly Payments and Total Cost Explained
- 📖 What to Include in a Professional Email Signature (Examples)
- 📖 How to Check DNS Records (A, MX, TXT, CNAME) for Any Domain
- 📖 How to Add Security Headers to Your Website (WordPress, Cloudflare, Apache)
- 📖 Why Are My Emails Going to Spam? Check Blacklists and Fix It
- 📖 PNG vs JPG: Which Is Better and When to Convert
- 📖 How Much to Tip in the US: Restaurants, Delivery, Salons and More
- 📖 How to Calculate Exact Age from a Date of Birth
- 📖 What Is Base64 Encoding? (And Why It Isn't Encryption)
- 📖 Why Are My Photos Sideways After Uploading? (And How to Fix It)
- 📖 How to Find the HEX Code of a Color in an Image
- 📖 How to Pick a Giveaway Winner Fairly (Instagram, Facebook & Email)
- 📖 Markdown Cheat Sheet: Headings, Lists, Links, Tables and Code
- 📖 How to Convert CSV to JSON (and JSON Back to Excel)
- 📖 Binary, Hex and Decimal Explained (With Quick Conversions)
- 📖 How to Create a Digital Signature Image (Transparent PNG)
- 📖 Morse Code Alphabet: Letters, Numbers and How to Learn It
- 📖 How to Make a Meme (That People Actually Share)
- 📖 What Is Lorem Ipsum and When Should You Use It?
- 📖 How to Make Barcodes for Products and Inventory
- 📖 How to Find Out What a Website Is Built With
- 📖 How to Fix Mixed Content Warnings (HTTPS Not Fully Secure)
- 📖 How to Check Your Website Speed (and Fix the Big Problems)
- 📖 How to Check if a Domain Name Is Available (and What to Do If It's Taken)
- 📖 What Is My IP Address and What Can Someone Do With It?
- 📖 How to Test Your Webcam and Microphone Before a Call
- 📖 Why Your Link Preview Looks Wrong on Facebook, LinkedIn or WhatsApp
- 📖 Regex for Beginners: 10 Patterns You'll Actually Use
- 📖 Cron Expression Examples: Every 5 Minutes, Daily, Weekdays and More
- 📖 How to Convert a Unix Timestamp to a Date (and Back)
- 📖 Subnet Cheat Sheet: CIDR, Subnet Masks and Host Counts
- 📖 Does My Small Business Website Need a Privacy Policy?
- 📖 How to Trim an Audio File (MP3, M4A, WAV) for Free
- 📖 How to Make a Photo Collage for Instagram, Facebook or Print
- 📖 How to Make Screenshots Look Professional for Posts and Slides
- 📖 How to Have Text Read Aloud on Any Device
- 📖 How to Rotate a PDF and Save It Permanently
- 📖 How to Add Line Breaks and Spaces to Instagram Captions
- 📖 How to Remove Hidden Metadata (Author, Dates) from a PDF
- 📖 How to Decode a JWT (and What Each Part Means)
- 📖 What Is URL Encoding (%20) and When Do You Need It?
- 📖 How to Write SEO-Friendly URLs (Slugs) for Pages and Blog Posts
- 📖 Does Keyword Density Still Matter for SEO in 2026?
- 📖 How Compound Interest Works (With Real Examples)
- 📖 How to Calculate a Discount (Percent Off and Stacked Discounts)
- 📖 How to Calculate Sales Tax (and Work Backwards from a Total)
- 📖 How to Calculate Your GPA (4.0 Scale) Step by Step
- 📖 How to Copy Text from a PDF That Won't Let You
- 📖 How Strong Is My Password? How Cracking Time Is Estimated
- 📖 How to Add a Border to a Photo (and Post Full Photos on Instagram)
- 📖 How to Pick Random Numbers Fairly (Raffles, Lotteries and Games)
- 📖 Should You Minify HTML and CSS? Speed Gains Explained
- 📖 YAML vs JSON: Differences and When to Use Each
- 📖 How to Format SQL Queries So They're Easy to Read
- 📖 How to Name Your Business: 7 Checks Before You Commit
- 📖 How to Convert Text to Binary (and Read Binary Messages)
- 📖 How to Turn a Picture into ASCII Art
- 📖 How to Use Emojis in Business Posts and Emails (Without Looking Unprofessional)
- 📖 How to Set Up DMARC for Your Business Domain (Step by Step)
- 📖 How to Create an SPF Record (and Avoid the 10-Lookup Trap)
- 📖 How to Create a robots.txt File (Without Hiding Your Site by Mistake)
- 📖 How to Write Meta Titles and Descriptions That Get Clicked
- 📖 Local Business Schema: What to Add and How to Add It
- 📖 How to Redirect a URL with .htaccess (301, HTTPS and www)
- 📖 How to Remove Duplicates from a List (Without Excel)
- 📖 How to Remove Line Breaks from Text Copied from a PDF
- 📖 How to Type Faster: A Realistic Plan to Add 20 WPM
- 📖 What Is a UUID? Versions, Format and When to Use One
- 📖 HEX, RGB, HSL and CMYK: Which Colour Format to Use
- 📖 How to Make a CSS Gradient Background
- 📖 HTML Entities Explained: When and How to Escape Characters
- 📖 Margin vs Markup: The Difference That Costs Businesses Money
- 📖 How to Work Out a Date 30, 60 or 90 Days from Today
- 📖 How Many Calories Do I Need a Day?
- 📖 Aspect Ratios Explained: 16:9, 4:3, 1:1 and Where to Use Them
- 📖 How to Read and Write Roman Numerals
- 📖 How to Convert a Salary to an Hourly Rate (and Back)
- 📖 How to Fix a Dark or Dull Photo with Brightness and Contrast
- 📖 How to Make a Photo Black and White (Free, Any Device)
- 📖 How to Convert SVG to PNG (Any Size, Transparent Background)
- 📖 How to Enlarge an Image Without Making It Blurry
- 📖 How to Delete Pages from a PDF for Free
- 📖 How to Create a WhatsApp Click-to-Chat Link for Your Business
- 📖 How to Share Your Wi-Fi with a QR Code