spoilr is a static browser tool for resolving the public image URL from a Jigsaw Explorer puzzle link.

It runs entirely in the browser. There is no build step, server, package install, or tracking code.

• Resolves full Jigsaw Explorer player URLs that contain url= or img=
• Accepts direct http and https image URLs
• Accepts encoded puzzle image values
• Removes Jigsaw mystery-puzzle metadata such as _(no_preview_4)_...
• Shows the resolved image through the Jigsaw Explorer fetch endpoint

The decoder mirrors the player script behavior from jigex-prog.js: it URI-decodes the value, treats values starting with http as plain URLs, otherwise applies the Jigsaw URL-safe Base64 replacements before decoding, removes custom mystery metadata, and wraps the clean target URL with:

https://www.jigsawexplorer.com/api/fetch?target=

Open index.html in a browser, paste a puzzle player URL, and press Reveal.

You can also pass a puzzle URL into the page query string:

index.html?url=https://www.jigsawexplorer.com/online-jigsaw-puzzle-player.html?url=...

The decoder tests run with Node.js and do not require dependencies.

node tests/decoder.test.js

Contributions are welcome. Start with CONTRIBUTING.md for local development, testing, and pull request expectations.

Please also read CODE_OF_CONDUCT.md and SECURITY.md.

This project is licensed under the MIT License.

Jigsaw Explorer, LinkedIn, and GitHub names and logos are trademarks of their respective owners. This project is not affiliated with Jigsaw Explorer.