Add Watermark to Image: free online, fast and secure
Photographers, sellers and content creators lose credit when images are copied. A visible watermark with your brand name or logo discourages reuse and keeps your name attached to your work.
This tool adds a text or logo watermark to one image or hundreds at once. Choose the size, opacity, angle and position, including a tiled pattern that covers the whole picture.
How to use Add Watermark to Image
- Add your images. Select all the photos you want to protect.
- Design the watermark. Type your text or upload a logo, then set size, opacity, angle and position. The preview updates live.
- Download. Get every watermarked image individually or as one ZIP file.
Why use ConvertKaro Add Watermark to Image? Free, fast and secure
There are many Add Watermark to Image websites, but most of them upload your files, add watermarks or ask you to pay. Here is why this one is better.
100% Free
Add Watermark to Image on ConvertKaro costs nothing. There is no trial, no premium plan and no hidden limit, so you can use it as often as you like.
Fast results
Because nothing travels to a server, results appear almost instantly. Large files are limited only by the speed of your own phone or computer.
Secure and private
Nothing is uploaded. Sensitive files like Aadhaar, PAN, salary slips or contracts stay on your own phone or laptop the whole time.
No signup, no watermark
No account, no email and no watermark on your result. Open the page and start.
Works on every device
Designed for mobile first, so it works just as well on your phone as on a desktop computer.
Text or logo, tiled or corner
Use a subtle corner mark for portfolios or a tiled pattern for strong protection on product photos.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
Common uses for Add Watermark to Image
- Product photos for Instagram, Meesho and marketplaces
- Photography portfolios and client previews
- Real-estate listings
- Protecting design drafts and artwork
- Marking documents as “Sample” or “Copy”
Tips for the best results
- 30–50% opacity is visible without ruining the photo.
- Use a PNG logo with a transparent background for a clean look.
- Tiled watermarks are hardest to remove; corner marks look more professional.
- For PDFs, use Watermark PDF.
Good to know
Two numbers describe every digital image: its dimensions in pixels (for example 1600×1200) and its file size in KB or MB. Dimensions decide how sharp the picture looks; file size decides how fast it loads and whether a form accepts it. Format matters too: JPG is best for photos, PNG for graphics and transparency, WEBP and AVIF for websites. Add Watermark to Image lets you control these things without Photoshop, and because everything runs locally, you can experiment as many times as you like without waiting for uploads.
| Price | Free, no limits |
|---|---|
| Processing | On your device, no upload |
| Signup | Not required |
| Watermark | None |
| Works on | Android, iPhone, Windows, Mac, Linux |
| Category | Image tools |
How Add Watermark to Image keeps your photos and images private
Most online converters upload your file to their server, process it there and send it back. That costs time, uses your data pack and means a copy of your file sits on someone else’s computer. Add Watermark to Image works differently: the page loads the tool into your browser, and your photos and images are processed by your own phone or computer. The file never travels over the internet, so it cannot be leaked, stored or misused.
Using Add Watermark to Image on your phone
Add Watermark to Image is designed for small screens. Buttons are large, options are simple, and downloads save directly to your phone storage. On iPhone, downloaded files appear in the Files app under Downloads; on Android they go to the Downloads folder.
Who uses Add Watermark to Image?
Here are some of the people who find this tool most useful:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Can I watermark many photos at once?
Yes. The same watermark is applied to all added images and you can download them as a ZIP.
Can I use my logo as a watermark?
Yes. Switch to “Logo”, upload a PNG or JPG logo, and adjust its size and opacity.
Will the watermark scale on different photo sizes?
Yes. Size is a percentage of each image, so it looks consistent on small and large photos.
Is Add Watermark to Image really free?
Yes. Add Watermark to Image on ConvertKaro is 100% free with no limits, no signup and no watermark. There is no paid version.
Is it safe to use Add Watermark to Image online?
It is one of the safest ways to do it, because nothing is uploaded. All processing happens locally on your device, and the files disappear when you close the page.
Does Add Watermark to Image work on mobile?
Yes. It works in Chrome and Safari on Android phones and iPhones, as well as on tablets and computers. No app is needed.
Is there a file size limit in Add Watermark to Image?
No upload means no server limit. The only limit is your device’s memory, which comfortably handles everyday files and even large batches.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does Add Watermark to Image work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.
Related free tools
People who use this tool often need these too: Watermark PDF, Add Text to Image, Compress Image, Resize Image, Remove EXIF Data.