PDF-XChange Editor vs Smallpdf

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

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PDF-XChange Editor edges out Smallpdf overall, scoring 21 versus 18, with Claude the friendliest to both (29 and 21) and Perplexity the toughest on PDF-XChange Editor at 15. Smallpdf actually shows up more often, named in 21 of 68 answers to PDF-XChange Editor's 17, and heads-to-head Smallpdf leads on 7 questions, PDF-XChange Editor on 6, with 7 tied. PDF-XChange Editor sweeps Windows and Adobe Acrobat alternative questions at 3 of 3, while Smallpdf sweeps PDF compression at 4 of 4 and leads browser-based editing 3 of 4. Neither is ever named for AI summarising or OCR questions.

Head to head

metric	PDF-XChange Editor	Smallpdf
score	21	18
questions won	9	12

By assistant

PDF-XChange Editor

assistant	score	named in, this week	usual spot, this week
ChatGPT	18	25% of answers	#3.6
Claude	29	40% of answers	#3.4
Gemini	not sampled this week
Perplexity	15	20% of answers	#3.5

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 PDF-XChange Editor gets named for

What's the best PDF editor for Windows?
Which PDF tool is best for privacy and sensitive documents?
What's the best tool to edit a PDF without a subscription?

Only Smallpdf gets named for

What's the best tool to compress a large PDF?
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 convert a PDF to Word or Excel?
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