Free online PDF reader, nothing to install
Open a PDF right in your browser to read it, search for a word, zoom, rotate a page or print it. The file stays on your device: nothing is sent to our servers and no account is required.
Drop your PDF here
or choose a file on your computer, tablet or phone
100% local reading: the document is never sent over the internet.
Everything you need to read a PDF online
Search the whole document
Every match is highlighted on the page, ignoring case and accents, and you can move between matches from the keyboard.
Zoom and rotation
Fit the page to your screen width, zoom up to 400% and straighten a document that was scanned upside down.
Page thumbnails
See the whole document at a glance and jump to any page in one click.
Password-protected PDFs
Open an encrypted PDF by entering its password, checked only on your device.
Faithful printing
Print the document exactly as it appears on screen, rotation included, from a computer or a phone.
Night reading mode
Switch pages to light text on a dark background to read for longer without glare.
Your PDF never leaves your device
Most online PDF readers start by uploading your file to their servers. Certyneo Reader works differently: the document is opened and displayed entirely in your browser. Employment contract, payslip, ID document: you can read a confidential file without handing it to anyone.
Received a document signed through Certyneo and want to make sure it has not been altered? Check the document's authenticity from its fingerprint
How to read a PDF online in three steps
No software to install, no account to create.
- 1
Open your PDF
Drag the file into the reader or pick it from your computer, tablet or phone.
- 2
Read and navigate
Scroll through the pages, zoom, rotate a page or jump straight to any page using the thumbnails.
- 3
Search, copy, print
Find a word anywhere in the document, select a passage to copy it or print the PDF in a few clicks.
Is the document ready and now needs to be signed by your clients or colleagues? See how to sign a PDF online with an electronic signature
Every PDF tool in the reader
Certyneo Reader does more than read: each tool below opens in the same reader, on your device, with no account and no upload.
- Edit the text of a PDF
Retype a date, a name or an amount in a PDF, or add text anywhere on the page. Editing runs 100% in your browser.
- Annotate PDF
Highlight, comment, draw or stamp a PDF, with standard annotations every reader can display. Nothing is uploaded.
- Redact PDF
Black out sensitive information in a PDF and truly remove the hidden text before sharing it. Processed 100% on your device.
- PDF OCR
Make a scanned PDF searchable: text recognised in French and English is added to each page. OCR runs 100% in your browser.
- Compare PDFs
Spot the lines added and removed between two versions of a PDF, page by page. Comparison runs 100% in your browser.
- Organise PDF pages
Move, rotate or delete the pages of a PDF by drag and drop, then save a clean document. Nothing is uploaded.
- Merge PDF
Combine several PDFs into a single document, in the order you choose. Merging runs 100% in your browser, without sending your files.
- Split PDF
Cut a PDF by page ranges or extract the useful pages into separate files. Processed 100% in your browser.
- Compress PDF
Shrink a PDF that is too heavy for email, losslessly or more strongly while keeping the text selectable. Compression runs 100% in your browser.
- Protect PDF
Add a password to a PDF before sending it, or remove the password from a file whose code you know. Encryption runs 100% on your device.
- Image to PDF
Convert JPG, PNG or WebP photos, screenshots or scans into a single PDF, one image per page. Your images stay on your device.
Related tools and guides
Online PDF reader: frequently asked questions
Is the online PDF reader really free?
Yes. Certyneo Reader is free, with no limit on the number of documents or pages, and asks for neither an account nor an email address.
Is my PDF uploaded to a server?
No. The file is read and displayed directly in your browser. Certyneo does not upload it, store it or look at it: closing the tab is enough to clear it from memory.
How do I open a password-protected PDF?
Open the file like any other PDF: the reader detects the protection and asks for the password. It is checked locally and never transmitted.
Can I search for a word in a scanned PDF?
Search works on PDFs that contain text. A scanned document without character recognition is only an image: it displays normally, but search will not find anything in it.
Is this an alternative to Adobe Acrobat Reader?
For reading, searching and printing a PDF, yes, with nothing to install, on a computer or a phone. To have a document signed with an electronic signature that complies with the eIDAS regulation, Certyneo offers a dedicated service.
Does the reader work on phones and tablets?
Yes. The reader adapts to the screen size and works in recent browsers on Android, iPhone, iPad, Windows, macOS and Linux.
Does this PDF need to be signed?
Send it for electronic signature in minutes: your signers sign from their phone, without creating an account.
Get started with Certyneo for free