pdfFiller vs Xodo
as AI assistants see them, week of 2026-09-21
Both pdfFiller and Xodo stay on the sidelines when AI assistants pick PDF tools, but Xodo edges ahead. pdfFiller scores just 4 overall (0 on ChatGPT, 0 on Claude, 11 on Perplexity) and turns up in only 3 of 68 answers, topping out at 1 of 4 mentions for browser editors, form filling, and mobile apps. Xodo scores 6 overall (0, 8, and 9 respectively) and appears in 7 of 68 answers, doing best on mobile, where it's named in 3 of 4 answers. Head to head, Xodo leads in 3 questions, pdfFiller in 1, with 16 ties.
Head to head
| metric | pdfFiller | Xodo |
|---|---|---|
| score | 4 | 6 |
| questions won | 3 | 4 |
By assistant
pdfFiller
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 0 | 0% of answers | |
| Claude | 0 | 0% of answers | |
| Gemini | not sampled this week | ||
| Perplexity | 11 | 15% of answers | #3.3 |
Xodo
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 0 | 0% of answers | |
| Claude | 8 | 15% of answers | #7.0 |
| Gemini | not sampled this week | ||
| Perplexity | 9 | 15% of answers | #5.3 |
Where they differ
Only pdfFiller gets named for
- What's the best tool to fill in and sign a PDF form?
Only Xodo gets named for
- What are the best PDF editors?
- What's the best tool to redact or remove sensitive text from a PDF?
More comparisons
- PDFescape vs pdfFiller
- pdfFiller vs PDFsam Basic
- pdfFiller vs UPDF
- pdfFiller vs Wondershare PDFelement
- PDFsam Basic vs Xodo
- Wondershare PDFelement vs Xodo
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full PDF editors leaderboard