PreviewFile on new websites
Developer tools.
- Sites using PreviewFile
- 1
- since May 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 20
no change on the 30 days before - Last 7 days
- 0.0%
- of new sites, 7-day average
no change on the week before
| First seen | May 1, 2026 |
|---|
What we found
- PreviewFile did not appear on any new site in the last 30 days.[1]
Share of new sites using PreviewFile
The line is the 7-day average share of new sites that use PreviewFile, since 10 September.
Developer Tools on new sites
| # | Movement | Tool | Share of category | Bar | |
|---|---|---|---|---|---|
| 1 | – |
Vite
|
98.4% | ||
| 2 | – |
pywb (Wayback Machine toolkit)
|
0.3% | ||
| 3 | ▲1 |
Instant.page
|
0.2% | ||
| 4 | ▼1 |
Weglot
|
0.2% | ||
| 5 | ▲2 |
Rack CORS
|
0.1% | ||
| … | |||||
| 446 | PreviewFile | <0.1% | |||
All-time shares across the new sites we track: of all of them, and of the sites using any Developer Tools tool. All 509 in Developer Tools
Recently launched products built on PreviewFile
1 of the 1 sites using PreviewFile are product launches we list individually.
| Site | Found |
|---|---|
Buda
buda.im ·  United States
|
May 1 |
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
How this page is made
FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards PreviewFile when we detect PreviewFile on it at that look.
Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites