pdfFiller vs UPDF

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

brag about it: X · LinkedIn

Both pdfFiller and UPDF stay on the edges of AI answers about PDF tools. pdfFiller scores 4 overall and turns up in 3 of 68 answers, with a single mention each for browser-based editors, form fill-and-sign, and mobile PDF apps; it's absent from redaction, summarising, OCR, merging, and open-source questions. UPDF scores 2 overall, named in 4 of 68 answers, picking up single mentions for general 2026 editor picks, small-business value, mobile apps, and Mac editors, while missing browser, redaction, summarising, OCR, and merging questions entirely. Head-to-head, UPDF edges ahead on 3 questions, pdfFiller on 2, and the pair tie on 15.

Head to head

metric	pdfFiller	UPDF
score	2	4
questions won	0	10

By assistant

pdfFiller

assistant	score	named in, this week
ChatGPT	0	0% of answers
Claude	0	0% of answers
Gemini	not sampled this week
Perplexity	not sampled this week

UPDF

assistant	score	named in, this week	usual spot, this week
ChatGPT	3	10% of answers	#4.5
Claude	6	15% of answers	#4.0
Gemini	not sampled this week
Perplexity	not sampled this week

Where they differ

Only pdfFiller gets named for

nothing exclusive

Only UPDF gets named for

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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