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PDF Reader Free Online: Your Comprehensive Guide

Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

apple logoPrêmio de Design da Apple 2025
50M+ usuários

Have you ever found yourself with a bunch of PDF files on your computer, wondering how you can open, read, and even edit them without having to invest in premium software? You’re not alone! This article will answer all your queries about free PDF readers, online tools, and other alternatives to Adobe.

PDF readers are quite different from PDF editors. With readers, you can view the content but cannot edit or fill in PDF forms.

Most word processing apps, even Google Docs serve as PDF converters. You can convert docx, PowerPoint (PPT), JPG, and PNGs easily and then view them as a PDF.

PDFs are very portable and fonts stay intact across all PDF pages though the font might not be installed on the reader’s computer.

How can I open a PDF file online for free?

You can utilize an online PDF viewer or reader. Simply search for "online PDF reader" in your web browser, drag and drop your file into the designated area, and voilà, you can view your document. Most online tools are compatible with different operating systems like Windows, Mac, and Linux, ensuring accessibility across devices.

Is there a free version of PDF reader?

Yes, many free PDF readers allow you to read PDFs, annotate them, and sometimes even edit them. These tools, ranging from web-based platforms to software, offer varying functionality.

Is Adobe PDF reader no longer free?

Adobe Acrobat Reader is free for viewing, signing, sharing, and annotating PDFs. However, if you want advanced features like the ability to edit PDF or convert PDF to Word documents and other formats, you'd have to opt for their paid versions.

How do I open a PDF without Adobe?

There are numerous alternative PDF viewers and editors, both offline and online, that allow you to open, read, and edit PDF documents without using Adobe.

What is the best free PDF reader?

The best PDF reader for you depends on your needs. Some offer basic viewing options, while others allow you to annotate, edit, or convert PDF files to other file formats.

Where can I get a free PDF reader?

You can download free PDF readers from the respective websites of software developers, or access online pdf viewers via a web browser.

What if I don't have Adobe?

No worries! Several tools can help you work with PDF documents without Adobe.

Where can I find a copy of the Adobe reader?

Visit Adobe's official website, and you can find a free version of Adobe Acrobat Reader available for download.

Top 8 Free PDF Readers and Their Features

  1. Adobe Acrobat Reader:
    • Platforms: Windows, MacOS, Android, iOS
    • Features: View, annotate, sign PDFs
    • Pricing: Free with paid options for extra functionality.
  2. Foxit Reader:
    • Platforms: Windows, Mac, Linux
    • Features: Annotate, convert, read PDFs, cloud storage integration with platforms like Dropbox and Google Drive.
    • Pricing: Free with premium features available.
  3. Slim PDF:
    • Platforms: Windows
    • Features: Basic PDF viewer functionality with a small file size.
    • Pricing: Free
  4. PDF-XChange Editor:
    • Platforms: Windows
    • Features: Annotate PDF, OCR capability, watermark tools.
    • Pricing: Free with additional features in the paid version.
  5. Google Drive's PDF Viewer:
    • Platforms: Web-based, Android, iOS
    • Features: View, create PDFs, convert PDF to Google Docs format, mobile device compatible.
    • Pricing: Free
  6. Nitro PDF Reader:
    • Platforms: Windows
    • Features: Convert PDF to Microsoft Word and Excel formats, annotate, sign PDF.
    • Pricing: Free with premium options.
  7. PDF.js (by Mozilla):
    • Platforms: Web browser extension for Chrome and Firefox
    • Features: Basic PDF viewing in your browser, open-source.
  8. Sumatra PDF:
    • Platforms: Windows
    • Features: Lightweight, reads other file formats like ePub, Mobi, XPS.

Every software above caters to different needs, from simple viewing to extensive editing. Your choice should depend on your required functionality, preferred operating system, and whether you want an offline solution or an online pdf reader.

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Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Cliff Weitzman é um defensor da causa da dislexia e o CEO e fundador da Speechify, o aplicativo número 1 de conversão de texto em fala do mundo, com mais de 100.000 avaliações 5 estrelas e líder de downloads na App Store na categoria Notícias & Revistas. Em 2017, Weitzman foi incluído na lista Forbes 30 under 30 por seu trabalho para tornar a internet mais acessível a pessoas com dificuldades de aprendizagem. Cliff Weitzman já foi destaque em veículos como EdSurge, Inc., PC Mag, Entrepreneur, Mashable, entre outros importantes meios de comunicação.

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Sobre o Speechify

Leitor de texto para fala nº 1

Speechify é a principal plataforma mundial de texto para fala, utilizada por mais de 50 milhões de usuários e avaliada com mais de 500.000 avaliações cinco estrelas em seus apps de texto para fala para iOS, Android, extensão para Chrome, aplicativo web e aplicativo para desktop Mac. Em 2025, a Apple premiou o Speechify com o prestigioso Prêmio de Design da Apple na WWDC, chamando-o de “um recurso fundamental que ajuda as pessoas a viverem melhor”. O Speechify oferece mais de 1.000 vozes naturais em mais de 60 idiomas e é utilizado em quase 200 países. Entre as vozes de celebridades estão Snoop Dogg, Mr. Beast e Gwyneth Paltrow. Para criadores e empresas, o Speechify Studio oferece ferramentas avançadas, incluindo gerador de voz com IA, clonagem de voz com IA, dublagem com IA e seu alterador de voz com IA. O Speechify também potencializa produtos de ponta com sua API de texto para fala de alta qualidade e excelente custo-benefício. Em destaque no The Wall Street Journal, na CNBC, na Forbes, no TechCrunch e em outros grandes veículos de notícias, o Speechify é o maior provedor de texto para fala do mundo. Acesse speechify.com/news, speechify.com/blog e speechify.com/press para saber mais.