How to Add a Watermark
Drop your photos above, type your text or choose a logo file, and the watermark is applied immediately. The controls that matter most are opacity and placement. A mark at full opacity in the corner is easy to see and equally easy to crop away; one at around thirty per cent repeated diagonally across the whole frame is genuinely awkward to remove without damaging the image, which is why the tiling option exists here rather than behind a subscription. Text watermarks get an optional drop shadow so they stay legible whether they land on a bright sky or a dark shadow, and logo watermarks keep their transparency, so a PNG mark sits cleanly over the photo instead of inside a white box. Size is expressed as a percentage of the image rather than fixed pixels, which means one set of settings produces a proportionally identical result across a mixed batch of resolutions — a real convenience when you are stamping a folder of photos straight from a camera. Adjust anything and press apply changes to re-run the whole set, then download each image or take them all as a single ZIP. Nothing is uploaded; the work happens entirely on your device, which matters when the photos are client work or personal.
Add your photos
Drag and drop, paste, or click to browse — multiple at once.
Set up the mark
Text or logo, then adjust opacity, size, position and rotation.
Download
Save each image, or take the whole batch as one ZIP.
What Watermarks Can and Can't Do
A deterrent, not a lock
A watermark discourages casual reuse and makes the source obvious when an image is shared. It cannot prevent a determined person from cropping, cloning or repainting it out — no visible mark can.
Placement beats opacity
A faint mark across the centre of the subject is harder to remove than a solid one in the corner. Tiling makes removal harder still, at the cost of how the image looks — that trade-off is yours to make.
Common Use Cases
Protect portfolio photos
Add a subtle credit before publishing your work online.
Client proofs
Send previews clearly marked until the invoice is paid.
Brand your content
Stamp a logo on images before posting to social media.
Mark internal documents
Label screenshots as confidential or draft.
Event photography
Batch-watermark a whole shoot with identical settings.
Stock previews
Tile a low-opacity mark across sample images.
Property listings
Add an agency logo to every photo in a listing.
Course materials
Mark slides and diagrams with your name or site.
Tips & Best Practices
Keep opacity between 30 and 60
Lower is easy to miss, higher spoils the photo. Somewhere in the middle protects without dominating.
Use tiling for anything valuable
A single corner mark takes seconds to crop away; a repeated one across the frame does not.
Turn on the drop shadow
White text vanishes on a bright sky. The shadow keeps it readable wherever it lands.
Use a transparent PNG logo
A JPEG logo brings its own background with it and will sit in a visible box.
Place over the subject, not the sky
Empty areas are the easiest to clone out. Crossing the main subject is far more effective.
Always keep the unwatermarked original
The watermark is permanently baked into the output — there's no undo later.
Troubleshooting
The watermark is barely visible
Raise the opacity, increase the size, or switch to a colour that contrasts with that part of the photo.
My logo has a white box around it
The logo file has no transparency. Use a PNG with a transparent background instead of a JPEG.
Changing a slider did nothing
Press apply changes to re-run the batch with the new settings.
The text is cut off at the edge
It's wider than the space allows. Reduce the size, shorten the text, or lower the margin.
Frequently Asked Questions
How do I add a watermark for free?
Drop your photos above, enter text or choose a logo, adjust the settings and download — free, with no tool branding added.
Are my photos uploaded to a server?
No. Watermarking happens entirely in your browser, so your photos never leave your device.
Can I use my own logo?
Yes. Switch to logo mode and choose a file — a transparent PNG gives the cleanest result.
What is tiling mode?
It repeats the watermark across the entire image, which is much harder to crop or clone out than a single corner mark.
Can I watermark several photos at once?
Yes. Add a whole folder and every image gets identical settings, then download them as one ZIP.
Does it add its own watermark?
No. The output contains only your image and your mark.
What opacity should I use?
Between 30 and 60 percent for most work — visible enough to deter, subtle enough not to ruin the photo.
Can I rotate the watermark?
Yes, up to 90 degrees in either direction, including in tiling mode for a diagonal pattern.
Why is the size a percentage?
So the same settings produce a proportionally identical result across images of different resolutions.
Can a watermark be removed?
A determined person can crop or clone one out. Tiling across the subject makes that much harder, but no visible mark is unremovable.
What format is the output?
PNG, which is lossless and preserves any transparency in the original.
Does it work with transparent images?
Yes. Transparency in the source image is preserved in the PNG output.
Is there a file size limit?
No. Nothing is uploaded, so the only constraint is your device's memory.
Can I change settings after applying?
Yes. Adjust anything and press apply changes to re-run the whole batch.
Why does my white text disappear?
It's landing on a bright area. Turn on the drop shadow, or choose a darker colour.
Does it work offline?
Once the page has loaded it runs entirely in your browser, so it keeps working without a connection.
Does it work on phones?
Yes, in any modern browser on Windows, Mac, Android or iPhone with nothing to install.
Is this tool really free?
Completely free, forever — no account, no ads and no premium wall.
100% free · No signup · Processed in your browser · Never uploaded
Last updated: August 2026 · FlipMyFormat Image Watermark Tool
Written and maintained by the FlipMyFormat team · Runs entirely in your browser