Free · Open source · Right in your browser
Put your mark on a whole folder of photos
Drop in your photos, pick a PNG stamp, and StampIt marks every frame right here in the browser. No upload, no account, no waiting around.
The stamping table
Frames, a stamp, and off you go
Bring in the photos, choose your mark and press the big button. All of it happens on your own computer.
Nothing is uploaded, ever
Frames
Stamp
Waiting for frames
Drop a folder of photos on panel 1 to begin.
How it works
Five little steps, one happy folder
From a folder of photos to a stamped ZIP, without leaving this page.
Step 01
Bring in the frames
Drop a folder of JPEG, PNG or WebP photos, or pick them from disk.
Step 02
Pick the mark
One PNG with transparency, centred on every frame.
Step 03
Dial the opacity
From a bold signature at 100 % to a whisper at 25 %.
Step 04
Apply the stamp
Frames go through one at a time, and each one gets its mark.
Step 05
Take the batch
Save straight into a folder, or download everything as one ZIP.
every step, explained with pictures
Read the full guideYour photos never leave home
StampIt’s engine is written in Rust and compiled to WebAssembly. It runs inside this tab, so every frame is decoded, stamped and saved on your own computer.
No upload
Not a single pixel travels to a server.
No account
Open the page and start. There is nothing to sign up for.
Works offline
After the first load there is nothing left to fetch.
Big frames welcome
Up to 120 MP each, one at a time, so memory stays flat.
Open source · MIT
Free for everyone, open to everyone
Made by Add Stamp Studio and shared with everyone
Read the code, fork it, or build the engine into your own project: the WebAssembly core is on npm as @howbizarre/image-stamper.
- MIT licensed: use it, change it, share it
- A Rust engine, compiled to WebAssembly
- The same engine stamps photos in Hortun, our studio software
a folder in, a stamped ZIP out
Go on, put your mark on it.
Drag a folder in and the first stamped frame is a few seconds away.