Nitro PDF vs Smallpdf

as AI assistants see them, week of 2026-09-21

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Nitro PDF edges out Smallpdf overall, scoring 24 versus 18 and turning up in 22 of 68 answers compared with 21 of 68. Nitro leads on desktop-flavoured questions, named in 4 of 4 answers for best value for a small business and 3 of 3 for best Mac editor and Adobe Acrobat alternative, but it's never named for browser-based editing, OCR, merging or form-filling. Smallpdf takes the browser and file-handling side instead, named in all 4 answers for compressing a large PDF and 3 of 4 for browser-based editing, though it never shows up for AI summarising, OCR, open-source tools, Windows editors or privacy. Head-to-head, Nitro leads in 7 questions, Smallpdf in 6, with 7 tied.

Head to head

metric	Nitro PDF	Smallpdf
score	24	18
questions won	10	12

By assistant

Nitro PDF

assistant	score	named in, this week	usual spot, this week
ChatGPT	21	30% of answers	#3.7
Claude	28	40% of answers	#4.0
Gemini	not sampled this week
Perplexity	23	30% of answers	#3.0

Smallpdf

assistant	score	named in, this week	usual spot, this week
ChatGPT	8	10% of answers	#2.5
Claude	21	45% of answers	#8.6
Gemini	not sampled this week
Perplexity	27	40% of answers	#4.1

Where they differ

Only Nitro PDF gets named for

What's the best PDF editor for Mac?
What's the best PDF editor for Windows?
What's the best tool to edit a PDF without a subscription?

Only Smallpdf gets named for

What's the best online PDF editor that works in the browser?
What's the best free PDF editor?
What's the best tool to fill in and sign a PDF form?
What's the best tool to merge, split and reorder PDF pages?
What's the best PDF editor app for iPhone or Android?

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full PDF editors leaderboard