Add Watermark to Images Free — Secure Your Photos Offline
Stamp your photos with custom text or transparent logos. Adjust opacity, font, and placement in the browser to protect your intellectual property.
25M+
Docs Merged
TLS 1.3
Client Encrypted
0 Logs
Processed in RAM
To protect your images, upload them to the EditPDFKit Watermark tool. You can overlay custom copyright text or upload your own transparent logo. Using the live editor, drag the watermark to your preferred position and lower the opacity to make it semi-transparent. Because this runs locally in your browser, your watermarked photos and original files remain 100% private.
6 Anti-Theft Watermark Superpowers (Text & Logo Stamps • Tile Repeat)
Protect your photos, artwork, and product listings with custom copyright text, company logos, and opacity controls.
Other tools charge subscriptions and leave ugly default branding. EditPDFKit gives you 100% customizable watermarks for free.
1. Custom Copyright Text & Dynamic Timestamps
Type your name, company URL, or copyright notice (© 2026) with custom fonts, colors, and font sizes.
2. Transparent Logo Overlay Stamps
Upload your transparent PNG logo or watermark graphic and overlay it seamlessly onto your images.
3. Diagonal Tile Repeat Mode
Repeat your watermark text diagonally across the entire photo surface to prevent cropping or background removal theft.
4. 9-Point Anchor Placement & Opacity Slider
Position watermarks precisely at Top-Left, Center, Bottom-Right, or anywhere, with fine-tuned transparency from 10% to 100%.
5. Batch Photo Watermarking
Apply the exact same watermark settings across 20+ product photos simultaneously and download as a clean ZIP bundle.
6. 100% Private In-Browser Protection
Watermark blending is computed locally in your device GPU/CPU. Your proprietary artwork never leaves your computer.
How to Add Custom Text or Logo Watermarks to Photos Online
Simple 4-step walkthrough for fast, secure processing
Upload Image
Select the photo you want to protect and drop it into the workspace.
Add Watermark Layer
Choose to type a custom text string or upload a logo file.
Style and Position
Adjust the opacity, size, and drag the watermark to the desired location.
Save Protected Image
Export the newly watermarked photo directly to your device.
EditPDFKit vs. Paid Photo Watermarking Tools
Why thousands of privacy-conscious users choose EditPDFKit over cloud converters
| Feature | EditPDFKit (editpdfkit.com) | Cloud Image Tools (Canva, TinyPNG) |
|---|---|---|
| Where Files Are Processed | Directly on Your Device (Zero Uploads) | Uploaded to Remote Company Servers |
| Privacy & Safety | Zero Uploads • Files Never Leave Your Device | Files Uploaded Across the Public Internet |
| Local Hardware Acceleration | Uses your device's multi-core CPU and WebAssembly for instant output | Processes on shared cloud servers with upload and download delays |
| Built-in Privacy Vault | Saved Privately on Your Device (View or delete anytime) | Saved on Cloud Servers (Cannot verify if or when deleted) |
| Daily Usage Limits | 100% Unlimited & Free Forever | Paywalled (Only 2–3 files per day free) |
| File Size Limits | No Limits (Process files of any size) | Strict Limit (15 MB – 50 MB unless you pay) |
| Works Without Internet | Yes • 100% Offline (Works without Wi-Fi) | No • Fails without constant internet connection |
| Account & Sign In | No Signup • No Login • Zero Email Required | Forces you to create an account or give email |
| Watermarks on Your Files | 100% Clean • No Watermarks Ever | Stamps watermarks or charges to remove them |
How Add Watermark Works: Keep Your Files Safe & Private
See step-by-step how your files are processed. Everything happens right inside your browser — your files are never uploaded to the internet or shared with anyone.
1. Open on Your Device
When you pick a file, your browser opens it directly on your computer or phone. Your document stays on your device and is never uploaded anywhere.
2. Process in Your Browser
Your device does all the work right inside your browser. Because there are no server queues or waiting lines, your files are processed instantly.
3. Save in Private Vault
When you save your work, your file is stored securely inside your browser's private vault on your device. You can view or reopen it anytime, even without internet.
4. Download, Reuse, or Delete
Download your finished file, send it directly to another tool without re-uploading, or click 'Clear Vault' to permanently erase your files anytime with one click.
How You Can Prove Your Files Never Leave Your Device
Open this tool, turn off your Wi-Fi or turn on Airplane Mode, and drop your file. It will still edit, convert, or compress and let you download the result! This proves the tool works completely offline without sending anything to any server.
Press F12 on your keyboard (or right-click anywhere and choose "Inspect"), click on the Network tab, and process your file. You will see 0 bytes of your file sent over the web — absolute proof of 100% privacy.
Canvas GPU Acceleration, Color Matrix & Filter Pipeline Specs
Key features, device compatibility, and supported file types
Runs Directly on Your Device
Processed by your browser with zero waiting or upload lag
100% Private (0 Files Uploaded)
Safe for bank statements, IDs, tax forms, and confidential files
100% Watermark-Free
Clean original documents ready for official submissions
.jpg, .jpeg, .png, .webp, .heic, .heif
Drag & drop or paste directly from clipboard (Ctrl+V)
100% Free With No Limits
No account needed, no daily limits, no paywalls
Works on All Phones & Computers
iPhone, Android, Windows PC, Mac, iPad, and Chromebook
Need to Hit an Exact File Size Upload Limit?
Online job boards, immigration visa portals, universities, and court e-filing systems enforce strict KB ceilings. Select a calibrated target size solver below to compress without losing readability.
Online Signatures & ID
Preserves sharp pen strokes and contrast for official uploads.
Passport & Visa Photos
Facial clarity preserved for US Visa, Schengen, and passport forms.
Govt Portals & ID Cards
High clarity for driver licenses, passports, and identity proofs.
Web Applications & Resumes
Perceptual quantization avoids noisy compression artifacts.
Interactive Split Slider
Dial in any custom KB limit with live before-and-after preview.
Looking for a Free Alternative to Popular Cloud Tools?
Unlike cloud-based services that upload your files to remote servers or enforce hourly limits, EditPDFKit runs 100% in your browser.
Was Add Watermark helpful?
Tap a star to rate your experience. No account or email needed.
Frequently Asked Questions About Watermarking Photos Online
Everything you need to know about Add Watermark on editpdfkit.com