UPDF vs Xodo
as AI assistants see them, week of 2026-09-21
Both UPDF and Xodo are minor players in AI answers about PDF tools, but Xodo edges ahead. UPDF scores 2 out of 100 overall and shows up in just 4 of 68 answers, while Xodo scores 6 out of 100 and appears in 7 of 68. Xodo's strongest showing is on phone and tablet editors, named in 3 of 4 answers, versus UPDF's best result of 1 of 4 or 1 of 3 across several questions. Head to head, Xodo comes out ahead on 4 questions, UPDF on 3, with 13 ties. Neither tool is ever named for merging, splitting or reordering PDF pages.
Head to head
| metric | UPDF | Xodo |
|---|---|---|
| score | 2 | 6 |
| questions won | 4 | 4 |
By assistant
UPDF
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 0 | 0% of answers | |
| Claude | 7 | 10% of answers | #3.5 |
| Gemini | not sampled this week | ||
| Perplexity | 0 | 0% of answers |
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 UPDF gets named for
- What's the best PDF editor for Mac?
- Which PDF editor is best value for a small business?
- What are the best PDF editors in 2026?
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?
- What's the best online PDF editor that works in the browser?
More comparisons
- PDFescape vs UPDF
- pdfFiller vs UPDF
- PDFsam Basic vs UPDF
- UPDF 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