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OCR.ac VS Okular

Compare OCR.ac VS Okular and see what are their differences

OCR.ac

Easily convert images, scanned documents, and low-quality photos to text with our online OCR tool. Fast and accurate text extraction.

Rating
0 reviews
Pricing
Free
Alternatives Is it good?
Okular

Okular is a universal document viewer based developed by KDE.

Rating
0 reviews
Alternatives Is it good?
Sable by SubRosa
Sable is a multi-tenant compliance and vendor risk platform for MSPs and growing companies, backed by an in-house security team for pen testing, SOC monitoring and incident response. The platform and the people to act on it. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Okular seems to be more popular. It has been mentioned 44 times since March 2021.

social mentions
0 vs 44
OCR popularity
100% vs 0%
alternatives listed
62 vs 168

Base details

Website, pricing, platforms and company facts side by side.

OCR.ac
Okular
Website ocr.ac okular.kde.org
Pricing
Free
—
Platforms
Windows MacOS Chrome OS iOS Android Mobile Desktop +4
—
Listed in
OCR Image Recognition Image To Text Converter AI +1
PDF Tools PDF Readers And Editors eBook Reader PDF Editor +1

Features and specs

What each product offers, as listed by its team.

OCR.ac 3 features
Okular 6 features
  • Online OCR
    Convert your images or pdf to text online and free.
  • JPG to Excel
    Easily convert your images containing tabular data in formatted excel sheet.
  • PDF to Excel
    Easily convert your pdfs containing tabular data in formatted excel sheet.
  • Open Source
    Okular is an open-source software, which means the source code is freely available. Users can modify and distribute it according to their needs.
  • Multi-Format Support
    Okular supports a wide array of document formats including PDF, PostScript, DjVu, CHM, XPS, ePub, and more, providing versatile document reading capabilities.
  • Cross-Platform
    Okular is available for multiple operating systems including Linux, Windows, and macOS, making it accessible to a wider range of users.
  • Annotation Tools
    It includes powerful annotation features allowing users to add notes, highlight text, and draw shapes directly on documents.
  • Customizable Interface
    The interface is highly customizable, enabling users to tweak the appearance and functionality to match their preferences.
  • Tabbed Browsing
    Okular supports tabbed browsing, allowing users to open multiple documents in a single window, enhancing multitasking.

Possible disadvantages

  • Limited Advanced PDF Editing
    While Okular provides basic annotation features, it lacks advanced PDF editing capabilities like modifying text and images within a PDF.
  • Learning Curve
    New users might find the extensive range of features and settings overwhelming, leading to a steeper learning curve compared to simpler document viewers.
  • Performance Issues
    Some users have reported performance issues when handling very large files, which can result in slower operation and responsiveness.
  • Dependency on KDE Libraries
    To get the best experience, Okular requires KDE libraries, which might not be ideal for users who prefer not to integrate KDE components into their system.
  • Mobile Support
    Okular does not have a dedicated app for mobile platforms like Android and iOS, limiting its usability on tablets and smartphones.

Analysis

An editorial look at what each product does well and who it suits.

OCR.ac
Okular

Overall verdict

  • OCR.ac appears to be a useful optical character recognition service for converting images and scanned documents into editable text, offering convenience for digitizing content, though users should verify accuracy and privacy practices for their specific needs.

Why this product is good

  • Converts scanned documents and images into editable, searchable text quickly
  • Can save significant time compared to manual data entry or retyping
  • Often supports multiple languages and various file formats
  • Typically accessible online without needing to install heavy software
  • May offer free or low-cost options for basic OCR tasks

Recommended for

  • Students digitizing lecture notes, textbooks, or handwritten materials
  • Office workers converting scanned contracts, invoices, or reports into editable files
  • Researchers extracting text from academic papers and archived documents
  • Small businesses needing quick, occasional document digitization
  • Anyone looking to make printed or image-based text searchable and editable

Overall verdict

  • Yes, Okular is generally regarded as a good document viewer due to its features, flexibility, and open-source nature, which ensures continual updates and community support.

Why this product is good

  • Okular is considered good for several reasons: it is a versatile open-source document viewer developed by the KDE community, supporting various file formats including PDF, PostScript, and ePub. It offers a range of features such as annotation tools, form filling, text extraction, and multimedia support. Additionally, it is cross-platform, available on different operating systems like Linux, Windows, and macOS, making it accessible for a wider range of users.

Recommended for

    Okular is recommended for students, educators, professionals, and any users who require a reliable and feature-rich document viewer capable of handling a wide range of file formats. It is particularly beneficial for those who value open-source software and need robust annotation and document management tools across different platforms.

Videos

Walkthroughs and reviews on video.

OCR.ac 0 videos + Add
Okular 3 videos + Add

No OCR.ac videos yet. You could help us improve this page by suggesting one.

okular, program for annotating your books in linux

More videos

  • - Review: Okular || Awesome PDF Viewer || Best PDF Viewer that I have tried yet.
  • - Okular Document Viewer vs Atril Document Viewer

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
OCR.ac
Okular
100% 100%
OCR
0% 0%
0% 0%
PDF Tools
100% 100%
100% 100%
Image Recognition
0% 0%
0% 0%
PDF Editor
100% 100%

Questions & Answers

As answered by people managing OCR.ac and Okular.

What makes your product unique?

OCR.ac's answer

OCR.ac provides powerful and free tools, OCR is not cheap and its a free tools platform.

Why should a person choose your product over its competitors?

OCR.ac's answer

User should choose OCR.ac because its free and its results are as good as other competitors and competitors are charging too much, so, the best choice is OCR.ac.

How would you describe the primary audience of your product?

OCR.ac's answer

OCR.ac provides OCR based tools, which is the need of almost all type of audience, like teachers, students, researchers, data entry persons, businesses with tons of paperwork, etc.

User comments

Share your experience with using OCR.ac and Okular. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

OCR.ac no reviews yet
Okular no reviews yet

We have no reviews of OCR.ac yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

OCR.ac 0 mentions
Okular 44 mentions

Tracking OCR.ac since Jul 2025.

  • Signing PDFs
    If you mean signing as in "signing with your handwritten signature", you could use Okular () which easily allows you to do that. Filling out forms also works nicely. Source: almost 3 years ago
  • Alexandria: A minimalistic cross-platform eBook reader
    I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / about 3 years ago
  • Help with PDF's
    I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: over 3 years ago

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Alternatives to OCR.ac and Okular

When comparing OCR.ac and Okular, you can also consider the following products.

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