typescriptlang.org
https://www.typescriptlang.org/
Ranks Overall #218 Developer Tooling #2
Data from Oct 8, 2026, 10:03 AM UTC old, older than this category's 3 days freshness target Measured every 2 days · 19 runs since Aug 27, 2026
Elsewhere:
PageSpeed Insights ·
Calibre ·
Treo ·
CrUX Vis ·
Tame the Bots ·
Scoring Calculator ·
Wayback Machine
Sites are measured on a rolling schedule, so figures here are the newest successful measurement rather than a reading taken just now. Comparisons against other sites may span different points in time.
Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).
Stack
Filmstrip LAB Throttled
How the page drew during the measured load, at 8 points across 3.00 s. Compare this filmstrip against another site.
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375 ms
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750 ms
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1.13 s
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1.50 s
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1.88 s
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2.25 s
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2.63 s
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3.00 s
Lighthouse Scores LAB Simulated
Metrics LAB FIELD
Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-09 → 2026-10-06), url-level.
| Metric | Lab Simulated | Field | |||
|---|---|---|---|---|---|
| Value | Change / range | Trend | p75 | Distribution | |
| LCP CWV Largest Contentful Paint | 1.80 s good | ↓ -837 ms (-31.8%) 1.25 s – 3.37 s | 1.27 s good | 91.6% 4.8% 3.6% | |
| INP CWV Interaction to Next Paint — field only, no lab run can measure it | n/a | — | 95 ms good | 94.3% 4.1% 1.6% | |
| CLS CWV Cumulative Layout Shift | 0.013 good | ↑ +0.011 (+550%) significant 0.002 – 0.013 | 0.010 good | 88.5% 2.7% 8.8% | |
| TBT Total Blocking Time | 31 ms good | ↓ -17 ms (-35.4%) significant 20 ms – 52 ms | n/a | — | |
| FCP First Contentful Paint | 1.21 s good | ↓ -1200 ms (-49.8%) significant 1.21 s – 2.71 s | 1.20 s good | 87.5% 7% 5.6% | |
| Speed Index | 1.21 s good | ↓ -1200 ms (-49.8%) significant 1.21 s – 2.71 s | n/a | — | |
| TTFB Time to First Byte | 609 ms good | ↑ +7 ms (+1.2%) 602 ms – 614 ms | 767 ms good | 76.3% 15.8% 8% | |
LCP Subparts LAB Throttled
The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.
LCP LAB Simulated vs LCP FIELD
The lab LCP is 1.41× the field p75 — real users likely have above-average hardware or network connectivity.
Page weight
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Page Weight | 589 kB | ↓ -3.3 kB (-0.6%) 588 kB – 592 kB | |
| Requests | 23 | → no change 23 – 23 | |
| Third-party Weight | 184 kB | ↓ -3.4 kB (-1.8%) 184 kB – 187 kB | |
| Third-party CPU | 2 ms | ↓ -0 ms (-14.3%) 2 ms – 3 ms | |
| Unused JS | 131 kB | → no change 128 kB – 131 kB | |
| Unused CSS | 29.4 kB | → no change 29.4 kB – 29.4 kB |
By resource type
| Type | Transfer | Share | Size | Requests |
|---|---|---|---|---|
| script | 52.2% | 307 kB | 7 | |
| font | 30.6% | 180 kB | 5 | |
| document | 12% | 70.8 kB | 1 | |
| image | 2.9% | 16.9 kB | 2 | |
| other | 1.2% | 7.2 kB | 5 | |
| stylesheet | 1% | 6.1 kB | 1 | |
| Total | 589 kB | 23 |
Third parties 2 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| office.net | 130 kB | 0 ms | |
| azurefd.net | 53.5 kB | 2 ms | |
| Total | 184 kB | 2 ms |
Without JavaScript
The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.
0% of pixels differ — they are identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 767 ms | ↓ -72 ms (-8.6%) 627 ms – 943 ms | |
| Long Tasks | 4 | → no change 4 – 4 | |
| DOM Elements | 1,414 | → no change 1,414 – 1,414 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 0 | → no change 0 – 0 | |
| A11y Failures | 0 | → no change 0 – 0 | |
| A11y Failing Nodes | 0 | → no change 0 – 0 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| script evaluation | 33% | 254 ms | |
| style layout | 24% | 187 ms | |
| other | 21% | 165 ms | |
| script parse compile | 10% | 78 ms | |
| parse HTML | 5% | 36 ms | |
| paint composite render | 4% | 34 ms | |
| garbage collection | 2% | 13 ms | |
| Total | 767 ms |
Axe violations axe-core 4.13.0, full rule set
0 violating nodes across 0 rules, 2024 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
Hygiene
Measurement log
Field history 25 weeks
Weekly p75 from the CrUX History API, backfilled in a single request.
| Week ending | LCP | INP | CLS | FCP | TTFB |
|---|---|---|---|---|---|
| 2026-10-03 | 1.26 s | 95 ms | 0.010 | 1.19 s | 765 ms |
| 2026-09-26 | 1.26 s | 95 ms | 0.010 | 1.19 s | 786 ms |
| 2026-09-19 | 1.26 s | 95 ms | 0.010 | 1.20 s | 778 ms |
| 2026-09-12 | 1.25 s | 95 ms | 0.010 | 1.19 s | 765 ms |
| 2026-09-05 | 1.23 s | 94 ms | 0.010 | 1.17 s | 762 ms |
| 2026-08-29 | 1.24 s | 96 ms | 0.010 | 1.18 s | 746 ms |
| 2026-08-22 | 1.26 s | 96 ms | 0.010 | 1.21 s | 765 ms |
| 2026-08-15 | 1.25 s | 95 ms | 0.010 | 1.19 s | 775 ms |
| 2026-08-08 | 1.30 s | 95 ms | 0.010 | 1.24 s | 837 ms |
| 2026-08-01 | 1.30 s | 95 ms | 0.010 | 1.24 s | 861 ms |
| 2026-07-25 | 1.30 s | 96 ms | 0.010 | 1.23 s | 862 ms |
| 2026-07-18 | 1.31 s | 97 ms | 0.010 | 1.25 s | 859 ms |
Runs
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 8, 2026, 10:03 AM UTC | 99 | 1.80 s | 0.013 | 31 ms | 589 kB | 3/3 | ±22 | 3,096 +24% | 52.5s |
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| Oct 6, 2026, 5:03 AM UTC | 94 | 2.63 s | 0.002 | 48 ms | 592 kB | 3/3 | ±13 | 2,483 0% | 51.5s |
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| Oct 1, 2026, 6:58 AM UTC | 99 | 1.66 s | 0.002 | 43 ms | 589 kB | 3/3 | ±3 | 2,281 -8% | 49.8s |
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| Sep 29, 2026, 4:32 AM UTC | 99 | 1.58 s | 0.012 | 46 ms | 588 kB | 3/3 | ±1 | 2,494 0% | 51.2s |
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| Sep 25, 2026, 8:16 PM UTC | 90 | 3.00 s | 0.002 | 45 ms | 589 kB | 3/3 | ±3 | 2,376 -4% | 47.7s |
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| Sep 23, 2026, 11:03 AM UTC | 99 | 1.80 s | 0.002 | 23 ms | 589 kB | 3/3 | ±1 | 3,399 +37% | 48.5s |
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| Sep 21, 2026, 7:52 AM UTC | 99 | 1.58 s | 0.002 | 44 ms | 589 kB | 3/3 | ±8 | 2,477 0% | 51.2s |
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| Sep 18, 2026, 11:07 PM UTC | 90 | 3.01 s | 0.002 | 52 ms | 588 kB | 3/3 | ±5 | 2,441 -2% | 51.6s |
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| Sep 16, 2026, 6:41 PM UTC | 88 | 3.37 s | 0.002 | 20 ms | 589 kB | 3/3 | ±8 | 3,010 +21% | 47.7s |
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| Sep 14, 2026, 5:49 PM UTC | 100 | 1.35 s | 0.002 | 46 ms | 589 kB | 3/3 | ±1 | 2,464 -1% | 52.1s |
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| Sep 12, 2026, 7:02 AM UTC | 100 | 1.25 s | 0.012 | 47 ms | 592 kB | 3/3 | ±1 | 2,358 -5% | 51s |
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| Sep 9, 2026, 11:00 PM UTC | 99 | 1.58 s | 0.002 | 37 ms | 588 kB | 3/3 | ±1 | 2,257 -9% | 24.9s |
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| Sep 7, 2026, 10:34 PM UTC | 99 | 2.11 s | 0.013 | 47 ms | 589 kB | 3/3 | ±1 | 2,433 -2% | 25.5s |
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| Sep 5, 2026, 8:05 PM UTC | 90 | 3.01 s | 0.002 | 39 ms | 588 kB | 3/3 | ±13 | 2,642 +6% | 25.6s |
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| Sep 4, 2026, 6:14 PM UTC | 100 | 1.39 s | 0.002 | 48 ms | 589 kB | 3/3 | ±10 | 2,295 -8% | 26.5s |
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| Sep 3, 2026, 6:57 AM UTC | 94 | 2.64 s | 0.013 | 51 ms | 592 kB | 3/3 | ±1 | 2,484 0% | 26.1s |
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| Sep 2, 2026, 3:08 AM UTC | 95 | 2.40 s | 0.002 | 40 ms | 589 kB | 3/3 | ±6 | 2,498 0% | 25.9s |
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| Aug 31, 2026, 10:31 PM UTC | 93 | 2.70 s | 0.002 | 45 ms | 589 kB | 3/3 | ±7 | 2,369 -5% | 25.1s |
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| Aug 27, 2026, 7:02 PM UTC | 88 | 3.36 s | 0.002 | 21 ms | 589 kB | 3/3 | ±12 | 2,990 +20% | 23.2s |
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