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Smallpdf vs ONLYOFFICE Docs Comparison (2026)

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Smallpdf

ONLYOFFICE Docs

Overview

Smallpdf is the simple and secure online PDF editor from Zurich, Switzerland. Founded in 2013, it offers 50+ tools to compress, translate, sign, edit, merge, and convert PDFs online, on desktop, or on mobile. Over 1 billion users have trusted Smallpdf with their documents.

ONLYOFFICE Docs is an open-source collaborative office suite for docs, sheets, forms, slides, diagrams and PDFs, compatible with MS Office and equipped with an AI assistant. It integrates into 40+ document management services and can be used within ONLYOFFICE DocSpace, a collaborative platform.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

/user

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

149

One-time payment

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.7

768

205

Value for money

Ease of use

Features

Customer support

85%

would recommend this app

4.5

106

Value for money

Ease of use

Features

Customer support

75%

would recommend this app

Pros

“The document editing is fine for light touch-ups but falls short for anything more involved deeper text editing, precise layout control, and more advanced document management leave you wanting a dedicated PDF editor.”

Soumya N.

Senior Software Engineer

“Smallpdf is a great tool for anyone who needs to fix, convert, or sign a PDF without dealing with bloated software. While heavy document managers will quickly hit the limits of the free version, its sheer simplicity and speed make it an excellent choice for daily office work and quick online fixes.”

Elisabetta M.

Marketing JR

“It makes quick tasks like combining files, converting PDFs to Word or images, compressing large files, and adding simple electronic signatures quick and hassle-free.”

Elisabetta M.

Marketing JR

Pros

“In my experience I started using this suite because at some point I need to use free software, so it was a very good option to replace the paid suite that I previously used.”

ANILU M.

SOFTWARE DEVELOPER

“Fast, free, and easy to sign up and start using (literally an email, click to confirm, make a password, and login is done) and loaded with familiar and favorite formatting features, this word processing website leaves nothing to be desired except a quick way to word count.”

Sarah C.

Freelance copywriter

“It autosaves likes a beast and no matter where I am or where my laptop is I can ALWAYS access my documents online whenever I need them.”

Sarah C.

Freelance copywriter

Cons

“Some capabilities are gated behind the paid tier or hit usage limits on the free plan, which can interrupt you mid-task.”

Soumya N.

Senior Software Engineer

“That one has to pay 10 euros for a Pro subscription. That, according to Kununu, their employees are not treated well.”

Mateo C.

Carpenter

“converting to word from pdf not great had a lot of editing to do to make it right wasting time hoping it will improve very soon”

Steve S.

boss

Cons

“My biggest struggle is that it doesn't word count and although there are plugins with literally limitless functions and formulas, I've tried several times to add a word count plugin both officially form their help support and from search engine result assistance all to no avail.”

Sarah C.

Freelance copywriter

“Their website is clunky although it looks well organized from a cursory glance, it's poorly sorted.”

Sarah C.

Freelance copywriter

“It my experience it was a bit slow to function, although i must admit that my PC had a low RAM and out of date hardware in general; this means that maybe newer computers might take full advantage of it.”