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Smallpdf VS OctoPDF

Compare Smallpdf VS OctoPDF and see what are their differences

Smallpdf

PDF document management and conversion suite

Smallpdf Landing page
Rating
0 reviews
Is it good? Alternatives
OctoPDF

Free online verifier for PDF/A, PDF/UA, ZUGFerD/Factur-X and digital signatures.

OctoPDF Free PDF/A Verification Online
Rating
0 reviews
Pricing
Free Free trial
Is it good? Alternatives
DocRaptor
As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more sponsored

Which is more popular?

Based on our record, Smallpdf seems to be more popular. It has been mentioned 38 times since March 2021.

social mentions
38 vs 0
PDF Tools popularity
99% vs 1%
alternatives listed
240+ vs 18

Base details

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

Smallpdf
OctoPDF
Website smallpdf.com octopdf.com
Pricing
Official pricing
Free Free trial
Company — Startup from the United Kingdom · 10 - 19 employees
Listed in
PDF Tools PDF Creator File Sharing PDF Editor +1
PDF PDF Tools Security Accessibility +1

About Smallpdf and OctoPDF

In their own words, as submitted to SaaSHub.

Smallpdf
OctoPDF

No description of Smallpdf yet.

Free online PDF/A validator. Quickly check PDF/A compliance, detect errors, and ensure archival-ready PDFs — no installation required. Drop your PDF onto OctoPDF and instantly verify it — for free. Our tool analyzes your file and provides detailed results you can share with anyone. We check for...

Read more about OctoPDF

Features and specs

What each product offers, as listed by its team.

Smallpdf 6 features
OctoPDF 4 features
  • User-Friendly Interface
    Smallpdf provides a clean, intuitive, and easy-to-navigate interface, making it accessible for users of all technical levels.
  • Wide Range of Tools
    Offers a variety of tools for PDF editing, including compressing, merging, splitting, and converting PDFs to other formats.
  • Cloud Integration
    Seamlessly integrates with cloud storage services like Google Drive and Dropbox, allowing users to work directly with their files stored online.
  • Security
    Utilizes strong encryption and deletes files from their servers after one hour, ensuring user data is kept secure and private.
  • Cross-Platform Availability
    Accessible from various devices including desktops, tablets, and smartphones with responsive web design.
  • Free Tier
    Provides a free tier with limited features, which is suitable for occasional or basic users.

Possible disadvantages

  • Limited Free Features
    The free version only allows for two tasks per day and places restrictions on larger files and advanced features, leading to potential inconvenience for frequent users.
  • Subscription Cost
    The premium subscription can be considered expensive for some users, particularly those who only need occasional PDF edits.
  • File Size Limit
    Even with a premium subscription, there are restrictions on the maximum file size that can be uploaded and processed.
  • Internet Dependence
    Requires an active internet connection to use most of its features, which can be a limitation for users with unreliable or slow connectivity.
  • Privacy Concerns
    Despite strong encryption, some users may still have reservations about uploading sensitive documents to an online service.
  • Limited Customization
    The range of customization options for certain tools may be limited compared to more specialized PDF software.
  • Universal Accessibility
    Check and verify PDF/UA-1 and PDF/UA-2 compliance, browse the structure tree.
  • Archival Quality
    Free online verification for PDF/A-1, A-2, A-3 and A-4 compliance.
  • Security
    Verify PDF digital signatures and timestamps.
  • Construction
    Verify the PDF file is valid, check for errors. Test against the Arlington Model.

Analysis

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

Smallpdf
OctoPDF

Overall verdict

  • Smallpdf is a reliable and efficient tool for managing PDF documents, suitable for both casual users and professionals. Its combination of versatility, ease of use, and security features makes it a strong contender in the realm of online PDF services.

Why this product is good

  • Smallpdf is considered good because it offers a wide range of PDF tools that are easy to use and accessible online. It provides functionalities such as PDF conversion, compression, editing, and signing, all within a user-friendly interface. This makes it an ideal choice for both individuals and businesses looking for efficient document management solutions. Additionally, it emphasizes security by ensuring encrypted file transfers, which is crucial for handling sensitive information.

Recommended for

  • Individuals who frequently work with PDFs and need a straightforward tool for conversions, compressions, or edits.
  • Students who need to annotate and organize their study materials in a PDF format.
  • Professionals who require a reliable tool for signing documents and collaborating with team members remotely.
  • Businesses looking for secure document management solutions with the flexibility of online access.

Overall verdict

  • OctoPDF appears to be a solid, easy-to-use online PDF tool for common document tasks, though as with any web-based service, it's wise to verify its current features, pricing, and privacy practices directly before relying on it for sensitive files.

Why this product is good

  • Web-based tools like OctoPDF typically require no software installation, making them accessible from any browser or device
  • They generally offer common features such as converting, merging, splitting, and compressing PDF files
  • Online PDF services are often free or low-cost for basic tasks, which is convenient for occasional users
  • A simple, intuitive interface can make document handling quick for non-technical users

Recommended for

  • Individuals needing occasional PDF conversions or edits without installing desktop software
  • Students and professionals who handle documents across multiple devices
  • Small businesses looking for a lightweight, browser-based PDF solution
  • Users who prefer free or low-cost tools for basic PDF tasks such as merging or compressing files

Videos

Walkthroughs and reviews on video.

Smallpdf 3 videos + Add
OctoPDF 0 videos + Add

smallpdf tutorial video

More videos

  • Review - Smallpdf Review
  • Tutorial - Smallpdf | How to do Unlimited Free Conversions ? | Hack for Smallpdf | Bypass limit of 2 conversion

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

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
Smallpdf
OctoPDF
99% 99%
PDF Tools
1% 1%
100% 100%
PDF Editor
0% 0%
99% 99%
PDF
1% 1%
100% 100%
PDF Converter
0% 0%

Questions & Answers

As answered by people managing Smallpdf and OctoPDF.

What makes your product unique?

OctoPDF's answer:

OctoPDF - free online PDF verification provides a combination of accuracy, transparency, and simplicity. Built on industry-leading PDF technology from BFO, OctoPDF performs the same deep validation checks trusted by developers, enterprises, and government organizations worldwide. Unlike many online tools, it verifies not only PDF/A compliance but also PDF/UA accessibility, digital signatures, timestamps, and file structure against the Arlington Model — all without requiring installation or registration. The result is a fast, secure, and standards-compliant way to validate PDFs that you can use and share freely.

Why should a person choose your product over its competitors?

OctoPDF's answer:

OctoPDF isn’t just another online PDF checker — it’s built by BFO, a company that’s been developing professional-grade PDF software since 1999. We’re active members of the ISO working groups for PDF/A and PDF/UA, and were the first to release a PDF/UA-2 validator. That same deep technical knowledge powers OctoPDF. Unlike many tools that give vague “pass/fail” results, OctoPDF provides a detailed breakdown of accessibility, archival compliance, security, and structure, tested against the Arlington Model. It’s accurate, transparent, and entirely free to use — the same technology trusted by developers, enterprises, and government agencies worldwide.

How would you describe the primary audience of your product?

OctoPDF's answer:

OctoPDF is designed for anyone who needs to ensure their PDF documents meet professional, legal, or archival standards. Our primary audience includes government departments, legal firms, financial institutions, and enterprises that rely on PDF/A for long-term storage and compliance, or PDF/UA for accessibility and public communication. It’s also used by developers, digital archivists, and records managers who need to validate documents at scale or verify the integrity of signed and timestamped PDFs. Whether for e-invoicing, policy documents, contracts, or archival preservation, OctoPDF provides fast, reliable validation that meets industry and regulatory expectations.

What's the story behind your product?

OctoPDF's answer:

OctoPDF is built by BFO (Big Faceless Organization), pioneers in PDF software development since 1999. Our audience includes government agencies, legal professionals, financial institutions, and enterprises that depend on precise, standards-compliant PDF documents. These organizations use OctoPDF to verify PDF/A for archival storage, PDF/UA for accessibility, and digital signatures for authenticity. Developers and records managers also rely on it to validate PDFs for e-invoicing, contracts, policy documents, and long-term preservation. This is just an application we built with our PDF Library. If you want to do verification at scale, convert PDF to PDF/A or bitmap, convert HTML to PDF, sign PDFs, and more, we have rock-solid tools for that. Powered by decades of expertise and active participation in ISO working groups for PDF standards, OctoPDF brings professional-grade validation to everyone — free, fast, and trusted worldwide.

User comments

Share your experience with using Smallpdf and OctoPDF. 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.

Smallpdf no reviews yet
OctoPDF no reviews yet

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

Social recommendations and mentions

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

Smallpdf 38 mentions
OctoPDF 0 mentions

View more

Tracking OctoPDF since Oct 2025.

Alternatives to Smallpdf and OctoPDF

When comparing Smallpdf and OctoPDF, you can also consider the following products.

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