API Watermark
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Watermarking for stock media

Previews that sell the shot, not give it away

Stock is the one business where your product is publicly browsable at full view — the only thing between browsing and taking is the preview mark. A consistent tiled watermark keeps thousands of assets sellable while staying subtle enough that buyers can still judge the work.

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A typical run

Input

3,000-asset catalog, new work weekly

Watermark

Tiled site mark at 20% on every public preview

Output

Marked previews on site; clean masters served on license

What unbranded images cost stock media sellers

Unmarked previews are free stock

Blogs, decks, and social posts will happily use a right-clicked preview at web resolution forever. The tiled mark is what converts 'good enough to steal' into 'easier to license' — it's the paywall rendered into the pixels.

Inconsistent marks cheapen the catalog

A catalog marked over the years with different logos, corners, and opacities reads as amateur. Re-running the entire library through one preset restores a uniform, gallery-grade look in an afternoon of batch jobs.

Footage previews leak the same way

Video clips need the same preview/licensed split, but rendering marked proxies for hundreds of clips ties up an edit bay. Queued watermark jobs render marked preview cuts on our workers while your machines stay free.

Watermarking for stock media sellers — API Watermark

The workflow that sticks

The canonical setup is two artifacts per asset: the clean master in private storage, and a marked preview generated by the pipeline — batch for the back catalog, API-on-upload for new work. Licensing serves the master; everything public serves the preview.

  1. 1

    Design one preview mark

    Your site name or logotype, tiled diagonally at 15–25% opacity, sized so a full repetition crosses the subject. Test on a busy image and a minimal one before committing catalog-wide.

  2. 2

    Batch the back catalog

    Run the existing library through in batches — ZIPs back per batch, same treatment on every asset. A few thousand images is an unattended afternoon.

  3. 3

    Automate new uploads

    One API call in your upload flow generates the preview at ingest, optionally converting to WebP for faster browse pages in the same request.

  4. 4

    Serve masters only on license

    Purchases pull the pristine original from private storage. The marked file is the only version that ever had a public URL — nothing to leak.

FAQ

Stock Media Sellers ask us

How heavy should a stock preview watermark be?

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Heavier than a portfolio mark, lighter than a wall: tiled at 15–25% opacity with the mark crossing the main subject. Buyers must be able to judge composition, light, and subject; casual takers must not get a usable file. Big agencies land in exactly this range for the same reason.

Does the watermark affect image search traffic to my catalog?

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Watermarked previews index fine in Google Images — there's no penalty for the mark itself. Since image search is a discovery channel for stock, keep previews at decent resolution with the tiled mark; the mark travels with the thumbnail and effectively advertises the source.

Can I regenerate previews if I rebrand?

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Yes — that's the payoff of keeping clean masters private and treating previews as disposable derivatives. Rebrand, update the preset, re-run the batch, replace the public files. The catalog never has to be re-shot or re-collected.

What about EXIF and copyright metadata on previews?

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Keep IPTC/EXIF copyright fields on your masters and previews for provenance, but treat them as documentation, not protection — most platforms strip metadata on upload. The visible tile is the deterrent; the metadata is the paper trail.

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