Overview
Wolne Lektury is Poland's national digital library API, giving access to thousands of freely available Polish literary works including full texts, author data, and cover images.
Beginner Tip
Browse all books with https://wolnelektury.pl/api/books/ — it returns a paginated list with direct download links for EPUB, PDF, and MP3 audiobook formats. No key needed.
Available Data
Example Response
{
"title": "The Great Gatsby",
"authors": [
"F. Scott Fitzgerald"
],
"publishedDate": "1925-04-10",
"pageCount": 218,
"categories": [
"Fiction"
],
"imageLinks": {
"thumbnail": "https://books.google.com/..."
},
"averageRating": 4
} Field Reference
title Title of the literary work. author Author of the work. slug URL-safe identifier used in detail endpoint paths. cover URL of the book cover image. href API URL of the book's detail endpoint. epub Direct download URL for the EPUB version of the book. Implementation Example
// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://wolnelektury.pl/api/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Fully tested on Apr 5, 2026
Technical Specifications
Related Tags
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