Nitro PDF vs Tungsten Power PDF

Adobe Acrobat

iLovePDF

Smallpdf

Adobe Acrobat is PDF editing software that can be used to create, convert and share PDF documents. It can convert documents in Microsoft Office formats to PDFs, and vice versa. PDFs can be viewed, annotated, and signed using Adobe Sign and the free Acrobat Reader mobile app.

iLovePDF is an online service that provides comprehensive tools for PDF document management. The platform offers features for organizing, optimizing, converting, editing, and securing PDF files, including merging, splitting, compressing, and converting PDFs to and from various formats. Available as both web and mobile applications, iLovePDF enables users to work with documents across different devices.

Smallpdf is a desktop, mobile & cloud-based PDF document management and conversion tool, providing a suite of 21 tools to create, convert and edit documents.

Network Admin

Software Customer Support is very difficult to reach, we havent had an issue for over 2 years but when we did have an issue, no phone number was available, just an online case ticketing system.

Team Lead

the payment team is sometimes messy to work with.

Administrator

No way to contact the company unless I want to purchase more

Easily convert your documents into editable PDFs. Whether you’re editing text in the document, redacting sensitive information or annotating your document with highlights or notes, perform all your essential PDF edits with ease.

Access Controls/Permissions

Activity Dashboard

Activity Tracking

Alerts/Notifications

Annotations

Archiving & Retention

Audit Trail

Authentication

Batch Processing

Collaboration Tools

Commenting/Notes

Communication Management

Compliance Management

Compliance Tracking

Compression

Configurable Workflow

Contact Management

Content Scan

Contract Drafting

Contract/License Management

Convert to PDF

Customizable Branding

Customizable Fields

Customizable Forms

Customizable Templates

Data Extraction

Data Import/Export

Data Security

Data Storage Management

Data Synchronization

Delete Pages

Digital Signature

Document Automation

Document Capture

Document Classification

Document Conversion

Document Editing

Document Generation

Document Imaging

Document Management

Document Review

Document Storage

Document Templates

Drag & Drop

Electronic Signature

Encryption

File Conversion

File Recovery

File Sharing

File Transfer

Forms Management

Full Text Search

Generative AI

HIPAA Compliant

ID Scanning

Image Editing

Image Pre-processing

Indexing

Invoice Processing

Language Detection

Merge/Append Files

Metadata Extraction

Mobile Access

Mobile Signature Capture

Multi-Language

Multi-Party Signing

Multiple Format Support

Multiple Output Formats

Offline Access

Optical Character Recognition

PDF Conversion

PDF Reader

Process/Workflow Automation

Rearrange Pages

Reminders

Reporting/Analytics

Reporting & Statistics

Rotate Pages

Search/Filter

Secure Data Storage

Side-by-Side Comparison

Signature Capture

Signature Creation

Single Sign On

SSL Security

Status Tracking

Tagging

Team Collaboration

Template Management

Templates

Text Editing

Text Extraction

Third-Party Integrations

User Management

Version Control

Watermarking

Workflow Management

Zone Selection Tool

Reviews for Nitro PDF come from a wide variety of industries, including construction (6% of reviewers), higher education (6%), and information technology and services (5%). The most frequent use case for Nitro PDF cited by reviewers is working with PDFs (87% of reviewers).

Users and use cases

Most users consider Nitro PDF to offer strong value for money due to its affordable one-time license and comprehensive features. However, some users report that upgrades and advanced features can be costly, and they find free version limitations restrictive.

Value for money

The Nitro PDF integration most frequently cited by reviewers is Microsoft Word, a document generation product rated 4.8 out of 5 for its integration with Nitro PDF.

Integrations

Nitro PDF is a PDF program with key features that include converting files to PDF, PDF reading, text editing, and more.

Nitro PDF

Web-based

Windows

Linux

iPhone

iPad

Adobe Acrobat Reader

Docusign

Foxit PDF Reader

ABBYY FineReader PDF

Soda PDF

PDFelement

Foxit eSign

Nitro PDF Standard

Nitro PDF Plus 

Nitro PDF Classic

Unresponsive customer service

66% of reviewers feel negative about Customer Support. Reviewers frequently express frustration with slow or unhelpful responses from Nitro’s support team. Users say it is difficult to reach customer service, often facing long wait times or receiving no reply at all. Some reviewers mention the lack of direct contact options, such as phone support, and reliance on online ticketing systems. They indicate that unresolved technical issues and poor communication lead to dissatisfaction, with some users feeling abandoned when problems arise. The perceived lack of adequate support is a recurring concern among reviewers.

Slow performance with large files

prepress printing manager

When handling a big file size or after using the software for a time shows a bug hanging and crashes the durability of the software in the pro version.

Researcher's 

Some users have reported slow performance, mainly when working with large or complex PDF files.

86% of reviewers feel negative about Performance and Speed. Reviewers indicate Nitro can be slow to load, especially when opening large or multiple PDF documents. Users report lagging, freezing, and occasional crashes during intensive tasks like OCR or when handling complex files. Some reviewers say these slowdowns impact productivity, requiring them to wait or restart the application. They find that performance issues are more pronounced with bigger files, and sometimes the software becomes unresponsive, causing delays in their work. These recurring speed problems are a significant drawback for users managing large volumes of documents.

Frequent crashes and glitches

Associate Technical Lead

Sometimes screen (including the operating system) gets stuck and unresponsive while loading the application.

60% of reviewers feel negative about Bugs and Issues. Reviewers report experiencing unexpected crashes, freezing, and unresponsiveness, particularly when working with large or complex PDF files. Users say these disruptions can interrupt workflow and require restarting the program or killing processes. Some reviewers mention issues with merging files, splitting documents, or using advanced features, which sometimes lead to the application hanging or closing unexpectedly. They indicate that these bugs are a recurring annoyance and can cause frustration, especially when deadlines are tight or when handling important documents.

Efficient electronic signatures

GMP Quality Assurance Lead

I couldn't do my day to day work tasks without Nitro pro - its so easy to edit and combine documents and with the signing we have been able to cancel our costly signing program subscription too .

Attorney

It allows me to save time by having clients sign documents electronically rather than having to meet in person.

92% of reviewers feel positive about Document Signing. Reviewers indicate Nitro streamlines the process of adding electronic signatures to documents, saving time and reducing the need for printing and scanning. Users say they can quickly apply saved signatures, create fillable fields, and send documents for review and signing directly from the software. Some reviewers find the e-signature capabilities essential for modern business workflows, noting that it meets customer expectations for digital transactions. They appreciate the convenience and security of digital signatures, which help simplify archiving and documentation processes for contracts and official papers.

Flexible document merging features

Senior Procurement Engineer - Facilities Management

Nitro is a valuable and indispensable tool when preparing contracts, copying bids, and merging reports in PDF format, so that we can easily share and attach them via email.

95% of reviewers feel positive about Document Combination. Reviewers appreciate how Nitro enables them to easily combine multiple files into a single PDF, saving significant time and effort. Users say the merging function is intuitive, allowing them to organize, extract, and rearrange pages as needed. Some reviewers find this feature especially helpful for preparing reports, contracts, and presentations, as it eliminates the need for multiple applications. They indicate that being able to split documents or merge various file types into one seamless PDF enhances productivity and simplifies document management for both personal and professional use.

Intuitive and simple experience

Project Coordinator

Nitro has made working with PDFs daily very fast and easy!

91% of reviewers feel positive about Ease of Use. Reviewers appreciate that Nitro is straightforward to learn and operate, with many saying it requires minimal training to become productive. Users think the interface is clean and navigation is logical, allowing them to complete tasks quickly. Some reviewers find the software’s simplicity reduces frustration and increases efficiency, especially when compared to other PDF tools. They indicate that both new and experienced users can easily create, edit, and manage documents. Many users mention that Nitro’s ease of use is a key reason they continue to rely on it for their document needs.

Versatile PDF management tools

89% of reviewers feel positive about PDF Document Management. Reviewers indicate Nitro provides a comprehensive set of tools for editing, converting, and managing PDFs, making daily document tasks more efficient. They appreciate being able to convert files between formats like Word, Excel, and PowerPoint, edit text and images, and annotate documents without needing additional software. Users say the software’s intuitive interface simplifies tasks such as merging, splitting, and securing PDFs. Some reviewers find these features particularly valuable for office workflows, legal documentation, and collaboration, highlighting the time savings and flexibility Nitro offers for handling various document types.

Civil Engineering

Nitro Pro’s user-friendly interface, powerful PDF editing tools, and effective document collaboration features make it a solid choice for managing and annotating PDFs.

editor

It works well and fulfilled all my needs for many years., but when I needed to transfer the licence from one laptop to another things fell apart.

Paralegal

I really enjoy the comprehensive features that assist with work efficiency and integration with Microsoft programs.

Quality Intervention Specialist

Honestly the bulk file conversion feature cannot be stated how great that is being able to turn 50 word docs into 50 PDFs is magical.

Incorrect information from support, quick to take money for a licence impossible to get it back when they fail to provide the software.

Senior Program Manager

It offers multiple ways to convert your document and even allows you to sign it.

I love the digital signature and document modification features the most.

Executive Assistant

Only thing that is annoying is that it tends to default to the app for all PDFs which is not necessary - not really due to Nitro!

Product Owner

Lacks the advanced features of Adobe Acrobat Pro.

I’d like the “printer ID” to be much more visible (to avoid clicking on Adobe PDF)

Director of IT

It is not always a 100% match for what Adobe can do depending on what features you need, so there are some times when we need to reach outside of the product to find a solution.

It can't open some pdf files (says they're corrupted - but they're not since Adobe Acrobat Reader can open them).

Senior immigration Advisor

Nitro Pro provides 14 trials fro you to installing, setup and exploit all features before final purchase

Project Manager

I have been Nitro on a daily basis alomst 5 years now and found it an amazing software to convert, edit and merge files together.

Admin

Sometimes editing text from another person's document takes some extra formatting. But I still feel the product is worthy.

Legal Counsel

From editing PDFs, OCR documents, electronically signing and converting to another document form from PDF, Nitro is able to do this with ease.

Billing

Love Nitro - if you need PDF or editing or signatures this is the program for you

Systems and network technician

Comprehensive editing, reviewing, and security features.

Strong cloud integration which makes multi device use much easier.

Systems Administrator

It does everything you would need for a PDF file for less cost

System Adminstrator

It's user-friendly and provides strong integration with cloud storage services.

Cultural Immersion Manager

I love its editing and notes and highlight in every color.

Nitro PDF vs Tungsten Power PDF Comparison (2026)

Nitro PDF

Tungsten Power PDF

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives