StampBatch

Watermark the whole folder.
Then prove every mark landed.

StampBatch stamps your text or logo across a batch of photos — corner marks for listings, tiled marks for proofs — then re-opens every output and pixel-compares it against the original, so a silently missed watermark can't slip into your shop. Everything runs on your own computer; your photos are never uploaded.

Get StampBatch — $29 one-time

What it does

Text or logo marks — a copyright line in white or black, or your own logo image with transparency
Nine-grid positioning, plus opacity and size controls that scale from thumbnail to master file
Tiled mode — repeat the mark across the full frame for proof and preview images
Platform presets for Etsy and Instagram that pre-tune mark size and margin (presets never change your photo's dimensions)
A re-check report with every batch — each output re-opened, size verified, watermark area pixel-compared
Originals never touched — results are written to a separate folder

What it never does

StampBatch only watermarks. It does not resize, crop, rename or convert your photos, so it can't silently degrade or re-frame them — output dimensions are always identical to the input, and the re-check proves it. And honestly: a watermark is a deterrent that raises the cost of stealing your images, not copy protection. Anyone who promises more is guessing.

Verified, not vibes

In a seeded acceptance test — 4 photos from 200×150 up to 3000×2000, three batches (text corner mark, logo mark, tiled text) — 24 of 24 checks passed: every output re-opened at exactly its original size, watermark-area pixels measurably changed (4.7% / 40.6% / 7.4%), opposite corners untouched (0.0%), and the originals' file hashes were unchanged after all runs.

How it works

Open StampBatch, choose the folder of photos and an output folder
Type your text or pick a logo, choose position / preset / tiling
Click Watermark & Re-Check — get watermarked copies plus the batch report