140 lines
3.6 KiB
Markdown
140 lines
3.6 KiB
Markdown
# Kramerius PDF Downloader
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Download page images from Digitalniknihovna / Kramerius and assemble them into a PDF.
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The script:
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- discovers all page UUIDs for a document
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- downloads each page image
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- embeds the downloaded JPEGs into a PDF
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- can resume interrupted downloads by skipping existing images
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- supports authenticated downloads with a Kramerius bearer token
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- can resolve other `digitalniknihovna.cz/<library>/...` links automatically
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## Requirements
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Python 3.10 or newer is recommended. The script uses only the Python standard library, so no `pip install` step is needed.
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## Basic Usage
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```bash
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python3 download_pdf.py "https://www.digitalniknihovna.cz/mzk/view/uuid:0abf59c0-794e-11e4-8ce5-005056827e52?page=uuid:e57e2820-8547-11e4-a321-5ef3fc9bb22f" \
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--output-dir pages \
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--pdf book.pdf
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```
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To test only the first few pages:
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```bash
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python3 download_pdf.py "URL_HERE" \
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--limit 20 \
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--output-dir test_pages \
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--pdf test.pdf
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```
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If a run is interrupted, run the same command again. Existing images are skipped unless you pass `--overwrite`.
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## Authenticated Downloads
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Some pages require a logged-in account. The Digitalniknihovna web app sends protected image requests with:
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```text
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Authorization: Bearer <token>
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Client: www.digitalniknihovna.cz
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```
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Use either `--auth-token`:
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```bash
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python3 download_pdf.py "URL_HERE" \
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--auth-token "PASTE_TOKEN_HERE" \
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--output-dir pages \
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--pdf book.pdf
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```
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Or put the token in `auth-token.txt` and use `--auth-file`:
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```bash
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python3 download_pdf.py "URL_HERE" \
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--auth-file auth-token.txt \
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--output-dir pages \
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--pdf book.pdf
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```
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`auth-token.txt` may contain either the raw token or a copied header like:
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```text
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Authorization: Bearer eyJ...
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```
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## How To Get The Auth Token
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1. Log in on `https://www.digitalniknihovna.cz`.
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2. Open the protected book page in the browser.
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3. Open browser developer tools:
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- Chrome / Edge: `F12` or `Ctrl+Shift+I`
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- Firefox: `F12`
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4. Go to the **Application** tab.
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5. Open **Local storage** in the left sidebar.
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6. Select:
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```text
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https://www.digitalniknihovna.cz
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```
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7. Find the key for your library. For MZK it is:
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```text
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auth.token.mzk
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```
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8. Copy the value and save it in `auth-token.txt`, or pass it directly with `--auth-token`.
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For another library, the key usually follows the same pattern:
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```text
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auth.token.<library-code>
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```
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For example, a URL containing `/mzk/view/...` uses `auth.token.mzk`.
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## Using Other Digitalniknihovna URLs
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Paste the document URL directly:
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```bash
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python3 download_pdf.py "https://www.digitalniknihovna.cz/LIBRARY_CODE/view/uuid:..." \
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--auth-file auth-token.txt \
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--output-dir pages \
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--pdf book.pdf
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```
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The script reads the library code from the URL and tries to resolve the correct Kramerius API backend automatically. If that fails, pass the API backend manually:
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```bash
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python3 download_pdf.py "URL_HERE" \
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--library mzk \
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--base-url "https://api.kramerius.mzk.cz" \
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--auth-file auth-token.txt \
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--output-dir pages \
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--pdf book.pdf
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```
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## Useful Options
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```text
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--limit N Download only the first N pages
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--overwrite Redownload images that already exist
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--delay SECONDS Wait between image downloads
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--cookies FILE Send cookies from a cookies.txt export
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--auth-token TOKEN Send Authorization: Bearer TOKEN
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--auth-file FILE Read token or headers from a file
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--client VALUE Override the Client header
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```
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## Security Notes
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Treat `auth-token.txt`, `cookie-dl.txt`, and copied request headers like passwords. Do not share them and do not commit them to version control.
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This repository's `.gitignore` already ignores common token, cookie, header, PDF, and downloaded-page files.
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