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How to Convert PLOS ONE and PLOS Journals PDFs to EPUB for E-Reader Reading (2026)

PLOS (Public Library of Science) is a nonprofit publisher of fully open-access journals. Every article in every PLOS journal is available as a free PDF under the CC BY licence — no subscription, no paywall. That makes PLOS one of the best sources for freely downloadable scientific reading material.

The catch: PLOS PDFs use two-column academic layout, embedded figures, and multi-panel graphics — formats that look terrible on an e-reader's narrow screen. Converting to EPUB gives you a reflowable single-column document that your Kindle or Kobo can render at any font size, with night mode and offline reading.

PLOS Journals at a Glance

Journal	Field	Typical article length	PDF availability
PLOS ONE	All sciences (multidisciplinary)	8–20 pages	Free, CC BY
PLOS Biology	Biological sciences	10–25 pages	Free, CC BY
PLOS Medicine	Clinical medicine & public health	10–18 pages	Free, CC BY
PLOS Genetics	Genetics & genomics	10–22 pages	Free, CC BY
PLOS Computational Biology	Computational & systems biology	10–20 pages	Free, CC BY
PLOS Pathogens	Microbiology & infectious disease	10–20 pages	Free, CC BY
PLOS Neglected Tropical Diseases	NTDs & global health	10–18 pages	Free, CC BY
PLOS Digital Health	Digital health & eHealth	8–16 pages	Free, CC BY
PLOS Water	Water science & policy	8–16 pages	Free, CC BY
PLOS Sustainability	Sustainability & transformation	8–16 pages	Free, CC BY

Why PLOS PDFs Are Difficult on E-Readers

Two-column layout: E-readers reflow PDF columns at a narrow viewport, breaking reading order across columns.
Inline figures: Multi-panel figures interrupt text flow and may render too small to read at default font size.
Supplementary material: PLOS publishes SI as a separate PDF — you get multiple files to manage per article.
References section: Long reference lists compress into tiny font at two-column density.

EPUB removes all of these issues: single-column flow, scalable font, and night mode on Kindle/Kobo.

How to Download a PLOS Article PDF

Go to journals.plos.org and search for your article by title, DOI, or author.
Open the article page. At the top right, click Download PDF.
Alternatively, use the DOI shortcut: https://doi.org/10.1371/journal.pone.XXXXXXX — PLOS DOIs begin with 10.1371.
For supplementary files, scroll to the Supporting Information section at the end of the article and download each SI PDF separately.
Save the PDF to your computer.

Tip: PLOS articles are indexed in PubMed, Google Scholar, Europe PMC, and OpenAlex — all of which link directly to the PLOS full-text page.

How to Convert a PLOS PDF to EPUB

Open toolkit.bot in your browser.
Upload the PLOS PDF you downloaded from journals.plos.org.
Wait for conversion — most articles complete in under 30 seconds.
Download the EPUB file.
Transfer to your Kindle via the Send-to-Kindle email address, to Kobo via USB or the Kobo desktop app, or open in any EPUB reader app (Apple Books, Readwise Reader, PocketBook).

Workflow for Reading Multiple PLOS Articles

If you're doing a literature review across multiple PLOS papers, a good workflow is:

Export your reading list from Zotero, Mendeley, or Google Scholar as a set of DOIs.
Download each PLOS PDF from journals.plos.org using the DOI links.
Convert each PDF to EPUB via toolkit.bot.
Name EPUBs consistently: Author Year - Title.epub.
Load onto your e-reader's Research collection.
Annotate on device; export highlights later via Kindle/Kobo companion apps or Readwise.

Frequently Asked Questions

Are PLOS journal PDFs free to download?

Yes. All PLOS journals publish under the Creative Commons CC BY licence, which means every article PDF is freely available to anyone — no paywall, no institutional login required. Go to any article page on journals.plos.org and click the PDF download button.

Why is a PLOS PDF hard to read on a Kindle or Kobo?

PLOS PDFs use a two-column layout with embedded figures, equations, and supplementary tables. E-readers reflow the text at a small viewport width, which breaks column flow and makes equations unreadable. Converting to EPUB produces a single-column reflowable file that the e-reader can render cleanly at any font size.

Does converting a PLOS PDF to EPUB preserve the figures?

toolkit.bot extracts figures from the PDF and embeds them inline in the EPUB. Complex vector figures may simplify, and multi-panel figures may shift position, but the images are retained. For figure-heavy articles, keeping the original PDF as a reference alongside the EPUB is a good workflow.

Can I convert a PLOS Supplementary Information PDF to EPUB?

Yes. PLOS supplementary files are separate PDFs. Download the SI PDF and upload it to toolkit.bot just as you would the main article — you'll get a separate EPUB you can add to your e-reader alongside the main article EPUB.

Which PLOS journals can I convert?

All of them: PLOS ONE, PLOS Biology, PLOS Medicine, PLOS Genetics, PLOS Computational Biology, PLOS Pathogens, PLOS Neglected Tropical Diseases, PLOS Digital Health, PLOS Water, and PLOS Sustainability and Transformation. All are fully open access and all publish downloadable PDFs.