Matched automatically from EXIF. Pick one manually for co-branded models, or upload your own logo.
The logo is switched off under “Fields”. Picking a brand or uploading one here turns it back on automatically.
Auto
by brand
Upload
PNG/JPEG
Social media ratios
Original by default. Picking a ratio expands the canvas — the photo is never cropped; the extra area is filled with a blurred copy or black.
Fill
Watermark position
Top / bottom only; floating watermarks keep the style’s horizontal alignment.
Displayed fields
All five fields are always listed: the adjustable ones get a switch, and anything this style doesn’t include — or lays out as fixed — says so. No switch here does nothing.
Custom sizes
Adjust logo and text where this style supports it; 100% is the original size.
Logo size can be adjusted in this style
Text size can be adjusted in this style
Drop photos to start (multiple OK)
JPEG / PNG / RAW (convert HEIC to JPEG first) · processed locally in your browser (WebAssembly) — never uploaded
Free online photo watermark tool: reads EXIF to generate camera, lens, aperture, shutter and ISO watermarks and borders — 50 styles, batch-process many photos and export them one at a time at full resolution. Style gallery · Guide & FAQ
No photos loaded
Help keep Mark going
I’m a student who loves photography, and the solo developer behind Mark. Servers, domains, test devices and multi-platform work are all self-funded. The tool stays free; if it helped you share a photo a little more beautifully, you’re welcome to buy me a coffee. Support is never a requirement — it’s the fuel for the next fix and the next style. Thank you for taking photos seriously with me.
These payment apps are China-only. If you can’t use them, starring the project or opening a friendly issue on GitHub helps just as much.
Support is entirely optional and unlocks nothing. Verify the payee before paying; minors should ask a guardian first.
Anonymous usage stats
On by default, can be turned off anytime. Only anonymous feature counters are sent (style used, export success, app version) to help improve the product. Photos, file names and shooting data are never uploaded — regardless of this switch.