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Okular vs WP Smush

Professional comparison and analysis to help you choose the right software solution for your needs.

Okular icon
Okular
WP Smush icon
WP Smush

Okular vs WP Smush: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Okular WP Smush
Sugggest Score — —
Category Office & Productivity Wordpress Plugins
Pricing Free Freemium

Product Overview

Okular
Okular

Description: Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.

Type: software

Pricing: Free

WP Smush
WP Smush

Description: WP Smush is a popular WordPress plugin used to optimize images. It compresses images to reduce file sizes without sacrificing quality, improving site speeds. WP Smush is free and automatically smushes images on upload.

Type: software

Pricing: Freemium

Key Features Comparison

Okular
Okular Features
  • Supports viewing PDF, PostScript, DjVu, CHM, XPS, ePub and other formats
  • Allows annotating, highlighting and adding comments to PDFs
  • Has different view modes like single page, facing, overview grid
  • Supports tabs for opening multiple documents
  • Has presentation mode for slideshows
  • Can fill interactive PDF forms
  • Allows saving filled forms as PDF or text
  • Has search functionality to find text in documents
  • Can encrypt PDF files
  • Has document information and metadata viewer
  • Supports table of contents navigation
  • Has different reflow modes for reading ePubs
  • Can print documents to system printer
WP Smush
WP Smush Features
  • Lossless image compression
  • Lazy loading for images
  • Bulk smushing of existing images
  • Automatically smush images on upload
  • Integration with NextGen Gallery plugin
  • Ability to set maximum image quality
  • Smush CDN for faster delivery
  • WebP image support
  • Smush stats to track savings

Pros & Cons Analysis

Okular
Okular
Pros
  • Free and open source
  • Clean and intuitive interface
  • Good performance with large PDFs
  • Lots of annotation and markup tools
  • Supports many document formats
  • Available on Linux, Windows, macOS
Cons
  • Limited format support compared to some alternatives
  • Annotation features may be limited for some users
  • No cloud storage integration
  • Less features than paid alternatives
WP Smush
WP Smush
Pros
  • Greatly improves page load speeds
  • Easy to setup and use
  • Works automatically without configuration
  • Free version available with robust features
  • Significant savings on image file sizes
  • Seamless integration with WordPress
Cons
  • Can be resource intensive on very large sites
  • No control over individual images in free version
  • Must pay for advanced features like WebP conversion
  • Requires an active subscription for pro features

Pricing Comparison

Okular
Okular
  • Free
WP Smush
WP Smush
  • Freemium

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Learn More About Each Product

Okular
Okular
Reviews, pricing & alternatives →
WP Smush
WP Smush
Reviews, pricing & alternatives →

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