PDF24 vs Smallpdf

as AI assistants see them, week of 2026-10-26

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PDF24 and Smallpdf are tied on overall visibility, each named in 19 of 57 answers, but AI assistants frame them differently. PDF24 scores 15 overall (19 ChatGPT, 15 Claude) and shows up every time for "best free PDF editor" (4 of 4) and "best tool without a subscription" (2 of 2), leaning toward free and privacy-minded use. Smallpdf scores 18 overall (14 ChatGPT, 24 Claude), with a notably stronger Claude showing, and sweeps "best PDF editors" (3 of 3) and "fill in and sign a PDF form" (2 of 2). Head-to-head, Smallpdf is named more often in 10 questions versus PDF24's 7, with 8 ties.

Head to head

metric	PDF24	Smallpdf
score	15	18
questions won	13	14

By assistant

PDF24

assistant	score	named in, this week	usual spot, this week
ChatGPT	19	25% of answers	#3.6
Claude	15	30% of answers	#5.8
Gemini	not sampled this week
Perplexity	not sampled this week

Smallpdf

assistant	score	named in, this week	usual spot, this week
ChatGPT	14	20% of answers	#4.0
Claude	24	60% of answers	#7.8
Gemini	not sampled this week
Perplexity	not sampled this week

Where they differ

Only PDF24 gets named for

What's the best free PDF editor?
What are the best alternatives to PDFgear?
What's the best tool to edit a PDF without a subscription?
What's the best tool to redact or remove sensitive text from a PDF?
What are the best alternatives to PDF-XChange Editor?
Which PDF editor is best value for a small business?

Only Smallpdf gets named for

What's the best tool to fill in and sign a PDF form?
What's the best PDF editor app for iPhone or Android?
What's the best tool to merge, split and reorder PDF pages?
What are the best alternatives to Adobe Acrobat?
What are the best alternatives to Foxit?
What's the best PDF editor for Mac?
What's the best alternative to Adobe Acrobat?

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