Addon Builder

Custom Addon Generator

Build your library.
Your way.

Build one ready-to-use addon file. Copy it into JSONKeeper, save, then paste the JSONKeeper link into Ink & Echo. No accounts, extra apps, or technical setup.

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What are you looking for?

Choose the library type for this addon. Comics and manga are separate for apps that support visual reading formats.

Which download service will users use?

Choose the download service your readers use. This only changes how links are prepared; the search engine stays private.

How should it search?

Choose how the addon should search. Best is the right choice for most users.

Best overall Recommended for most users. Balances speed, quality and coverage.

Control center

Shape how the addon behaves for your readers. Defaults are tuned for clean English results and strong M4B/EPUB matches.

Library Behavior

These controls change the addon behavior after the user saves it in JSONKeeper.

Title style
Shows format, quality, seeds and source in the visible title. Best when the app shows limited details.

Language preference

Choose Global for maximum coverage, or focus results for one audience.

Your addon is ready!

Follow these steps once. After that, users only use the saved JSONKeeper link.

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Copy the addon JSON

This is the full addon file. It is already configured for Ink & Echo.

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Open JSONKeeper

Paste the copied JSON into the empty box, then press Save.

Open JSONKeeper
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Use the JSONKeeper link

Copy the saved JSONKeeper URL and paste that URL into Ink & Echo as the addon source.

Private routing profile

Test this addon

    New to JSONKeeper? It is just a free place to host this addon file. Users never need to edit the JSON after it is saved.

    Open JSONKeeper
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    Privacy-first

    Your generated addon never leaves your browser. All JSON is built client-side.

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    Lightning fast

    Our Cloudflare Workers run on 300+ edge nodes globally — under 100ms latency anywhere.

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    Private routing

    Coverage profiles keep the search recipe private while giving users simple controls.