Public domain art on a cover
While authors pay for the same stock photographs as everyone else in their category, museums, libraries and archives have spent years scanning their collections at high resolution and putting the results online.
Classical painting. Vintage illustration and poster art. Botanical and scientific plates. Old maps and charts. Historical photographs. Bookplates, ornament, engraved lettering. It is free, it is often superb, and almost nobody in self-publishing uses it.
The distinction that matters
An old artwork and a photograph of that artwork are two different things, and they can have two different statuses.
The artwork may be long out of copyright. The photograph or scan of it was made recently, by an institution, and that institution may assert its own terms over the file — or may have released it deliberately with no restrictions at all. Many have done exactly that, which is what "open access" means on a museum site.
The two sit on top of each other, and the age of the painting alone never settles it.
- Terms vary widely by institution. Two museums holding work by the same artist can publish under completely different terms.
- They vary by country. What is settled in one jurisdiction is open in another, and copyright terms themselves differ from one country to the next.
- They vary by item. A single collection often mixes freely released images with items still under restriction, usually marked per record.
So the reliable method is the dull one: read the terms on the specific page for the specific item, and look for the rights statement the record carries. This is not legal advice, and where a use matters commercially the institution's own rights team is the place to ask.
Where to look
By category rather than by name, because the good ones are numerous and they change their terms:
- National and major museum open-access collections, which have released large parts of their holdings at print resolution.
- National libraries and national archives, which hold maps, photographs, posters and printed ephemera.
- Institutional digitization projects — university libraries, botanical and natural history collections, map societies, film and poster archives.
Search by subject and period rather than by artist. You are looking for a shape, a texture and a palette that fit your book, not for a famous picture.
Why it works on a cover
It is not on a hundred other books. The duplicate-image problem that haunts stock photography barely exists here, because the pool is vast and almost unvisited by authors.
It signals period instantly. An engraving says nineteenth century before a reader has looked at your title. A botanical plate says natural history, herbalism, quiet literary fiction. A naval chart says voyage. This is genre shorthand you cannot buy.
It is unusual. A painted surface — visible brushwork, craquelure, foxed paper, plate lines — reads as made rather than sourced, and that is exactly the quality a template cover lacks. See Why template covers look like template covers.
In the Cover Maker. Drop an archive file in and the tool reports the real DPI at your actual trim, flags anything under 200 DPI as visibly soft, and shows the cover at thumbnail size — where a busy painting turns to noise. Start a book → · about the Cover Maker
Where it fails
Resolution measured against inches, not pixels. An archive thumbnail is useless and the full-size master is often enormous. What decides it is the printed size: a 6 × 9 front panel with bleed is 6.125 × 9.25 in, which is 1,838 × 2,775 px at 300 DPI. Check the file against that number, not against how good it looks on screen — Resolution: why a good-looking image prints badly has the arithmetic.
Dark varnished paintings go muddy. Old oil under yellowed varnish is mostly deep browns separated by small differences in tone. Those differences survive on a backlit screen and collapse on paper, where the panel becomes one dark flat area with a face floating in it. If you love a dark painting, lift and separate the tones first, and order a proof.
Busy detail dies at thumbnail. A crowded battle scene, a dense map, a full page of ornament — all magnificent at full size, all gray noise at 150 pixels tall. The thumbnail test applies here more harshly than anywhere else.
Crop hard
The single biggest mistake is reverence. Authors reproduce the whole painting inside the trim, frame and all, and the result looks like a museum postcard with a title on it.
Treat the image as raw material:
- Take a fragment. One hand, one corner of sky, the folds of a sleeve, three flowers out of a plate of twenty.
- Enlarge past the edges. Let the crop run off all four sides so nothing reads as a reproduction.
- Use it as texture. Paper grain, craquelure and plate lines behind flat color make an excellent ground for type.
- Let type carry the book. The art gives you atmosphere; the title gives you the genre and the promise. Pairing typefaces on a cover covers the setting.
Download the largest file the archive offers, every time. Our one-click enlargement to 300 DPI is ordinary resampling done in your browser — nothing is uploaded, no AI is involved — and like all resampling it cannot invent detail that was never scanned. It rescues a file that is close. It does not rescue a thumbnail.
Make yours
Everything here is built into the tools, and they are free to use: name your book, bring your manuscript or your artwork, and work as long as you like. You only pay when you want the files without the preview watermark.
Next: Illustration or photography? · More: Stock images: what the license actually lets you do · Resolution: why a good-looking image prints badly · What belongs on a copyright page