1Upload the PDF documents you want to read — nothing is installed and no reader application is needed.
2Page through the document, zoom, and search inside it wherever the file carries a real text layer.
3Select and copy any text you need straight out of the rendered page.
4Close the tab when you are finished; the uploaded PDF file is deleted from the workers shortly afterwards.
PDF Reader FAQ
Do I have to upload the file to read it?
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It goes to our workers to be rendered, and is deleted shortly after your session finishes. Nothing about the document is retained and nothing is indexed.
How does PDF Reader display the file?
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Concretely, the document is rendered page by page in the browser with its text layer intact, so you can search and select without downloading anything or installing a reader. Nothing is installed and nothing is downloaded to open it.
Anything specific to PDF here?
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Yes — a PDF is an object graph, not a page image, so text stays selectable and vectors stay sharp no matter what happens to the raster content inside it. It explains what is preserved on screen.
Does it look the same as it would in a desktop reader?
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Yes for the page content — fonts, vectors and images are rendered from the same objects a desktop reader would use. Interactive extras such as embedded multimedia and JavaScript actions are deliberately not executed.
What can I upload to PDF Reader?
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Any standard PDF, including ones produced by a scanner, by a word processor or by a print driver. Files with an owner password that only restricts editing are handled; files that need a user password to open are not, and we do not attempt to break encryption.
Is there a file size limit on PDF Reader?
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Yes: free accounts process documents up to 25 MB each, which covers most reports and contracts but not a long scanned document at 600 DPI; Ghostscript and qpdf do the work. Scanned PDFs are the usual thing that exceeds it, and compressing the document first is normally enough to bring it back under.
Will PDF Reader lower the quality of my PDF documents?
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Text and vector artwork are objects rather than pixels, so they stay perfectly sharp at any zoom no matter what happens. Only the embedded raster images can degrade, and only if the operation you chose resamples them.
Can I run PDF Reader on several PDF documents at once?
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Yes — upload the set and they process in parallel under one set of settings, which is the point of doing a document workflow here rather than clicking through a desktop reader.
Why does a EPUB site host PDF Reader?
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EPUB.to is built around the open eBook format — XHTML in a zip, reflowable by design, and readable on hardware nobody has thought about the layout for. A book is a zip full of markup, images and fonts, so almost every job people bring to an eBook site is really a job on one of those things. PDF Reader runs on the same upload and the same account as the conversions because that is where it is needed.
What should I do with the result once PDF Reader is finished?
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The converter on this site moves books between EPUB, MOBI, AZW3, PDF and DOCX, so a title ends up on whatever hardware is actually going to read it. Doing that after PDF Reader means the conversion is made from the version you settled on, not from the one you were still fixing.
Is PDF Reader here the same tool the sibling sites run?
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The engines are shared — the same toolchain, the same workers, the same limits. What a EPUB site adds is a view on reflow: which of these operations a reflowable book genuinely supports, and which ones only make sense on the fixed-layout media inside it. It also starts from one fact about the format this site is named after: the book is a zip of XHTML with a manifest, so the text costs almost nothing and every decision that matters is about the embedded images and font subsets.
Do I need an account, and does anything get kept?
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No account, and nothing is kept: uploads are deleted from the workers shortly after the job finishes, nothing is read and nothing is indexed. Free accounts exist for history and batch size, not for access.
