500px.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:39 UTC. Grade A (96/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 54 ms 50%
- TCP connect 3 ms 3%
- Server wait 50 ms 47%
Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.
How this page compares
Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.
What these numbers mean
- The server answered in 107 ms, which is fast: almost all of the wait is the page itself, not the host.
- The page transfers 42.3 KB over 6 request(s), which is lean. Other files are 55% of it, so that one type is worth a look on its own.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element painted at 1.07 s, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.002), so nothing jumps under the reader's cursor.
- The main thread was blocked for 135 ms in total, which is not enough to feel.
Fix first: Cache static assets - Version filenames on change and serve them with a long max-age plus immutable. That is what makes a returning visitor fast.
Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.
Screenshot
What the page looks like
Loaded in headless Chromium on this server. Click an image to open it full size.
Browser render
The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 6 request(s) in total, 42.3 KB across all of them.
Top issues
Cache static assets
medium impact5 asset(s) answer without a Cache-Control max-age, so browsers revalidate them on every visit.
Fix: Version filenames on change and serve them with a long max-age plus immutable. That is what makes a returning visitor fast.
Strict-Transport-Security
low impactHSTS is not set, so the first visit on a hostile network can still be downgraded to HTTP.
Fix: Send Strict-Transport-Security with a max-age of at least six months. Add includeSubDomains once every subdomain is HTTPS.
Waterfall
Slowest requests
Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://500px.com/favicon.ico | images | 200 | 345 ms | 16.6 KB |
| https://500px.com/main.js | javascript | 200 | 277 ms | 1.6 KB |
| https://500px.com/assets/pxiByp8kv8JHgFVrLEj6Z1xlFQ-zEkxB9Mr.woff2 | other | 200 | 275 ms | 7.8 KB |
| https://500px.com/assets/pxiByp8kv8JHgFVrLGT9Z1xlFQ-C8OXljZJ.woff2 | other | 200 | 268 ms | 7.6 KB |
| https://500px.com/assets/pxiEyp8kv8JHgFVrJJfecg-cpxAROuN.woff2 | other | 200 | 266 ms | 7.7 KB |
Report this page
Run this test on your own site
The same engine, free, with the screenshots and the fixes. No account needed.