openpaymentsdata.cms.gov: History & Trends
How this site has changed over time. The weekly overview answers "what should I fix now?"; this page answers "how are we trending?"
Tracking since 2026-W24 — 17 weeks recorded. Accessibility score is stable (+0 pts since 2026-W36). Download the full trend series: CSV · JSON.
How the latest week compares
Latest week (2026-W40) vs. earlier look-back windows. positive/negative is relative to each measure — coloured by better or worse
| Measure | Now | vs 4 wk ago | vs 13 wk ago |
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| Accessibility score | 100 | no change | +15 better |
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| Median axe violations / page | 0 | no change | -3 better |
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| Median page weight (KB) | 2906 KB | -7 KB better | +152 KB worse |
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| Reading ease (Flesch) | 14.2 | -0.8000000000000007 worse | +1.1999999999999993 better |
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| Standards checks passing (%) | 64% | no change | +14% better |
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Accessible? — severity over time
Pages affected by axe severity over 17 weeks (lower is better)
Pages affected by axe severity, by week
| Week | Critical | Serious | Moderate |
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| 2026-W24 | 0 | 0 | 206 |
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| 2026-W25 | 0 | 0 | 206 |
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| 2026-W26 | 0 | 0 | 206 |
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| 2026-W27 | 0 | 0 | 206 |
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| 2026-W28 | 51 | 1 | 223 |
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| 2026-W29 | 51 | 1 | 223 |
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| 2026-W30 | 51 | 1 | 223 |
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| 2026-W31 | 51 | 1 | 223 |
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| 2026-W32 | 51 | 1 | 0 |
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| 2026-W33 | 51 | 1 | 0 |
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| 2026-W34 | 51 | 1 | 0 |
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| 2026-W35 | 51 | 1 | 0 |
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| 2026-W36 | 51 | 1 | 3 |
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| 2026-W37 | 51 | 1 | 3 |
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| 2026-W38 | 51 | 1 | 3 |
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| 2026-W39 | 51 | 1 | 3 |
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| 2026-W40 | 51 | 1 | 3 |
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Fast? — Lighthouse over time
Lighthouse category scores over 17 weeks
Lighthouse category scores by week
| Week | Performance | Accessibility | Best practices | SEO |
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| 2026-W24 | 17 | 100 | 100 | 100 |
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| 2026-W25 | 20 | 100 | 100 | 100 |
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| 2026-W26 | n/a | n/a | n/a | n/a |
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| 2026-W27 | n/a | n/a | n/a | n/a |
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| 2026-W28 | n/a | n/a | n/a | n/a |
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| 2026-W29 | n/a | n/a | n/a | n/a |
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| 2026-W30 | n/a | n/a | n/a | n/a |
|---|
| 2026-W31 | n/a | n/a | n/a | n/a |
|---|
| 2026-W32 | n/a | n/a | n/a | n/a |
|---|
| 2026-W33 | n/a | n/a | n/a | n/a |
|---|
| 2026-W34 | n/a | n/a | n/a | n/a |
|---|
| 2026-W35 | n/a | n/a | n/a | n/a |
|---|
| 2026-W36 | n/a | n/a | n/a | n/a |
|---|
| 2026-W37 | n/a | n/a | n/a | n/a |
|---|
| 2026-W38 | n/a | n/a | n/a | n/a |
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| 2026-W39 | n/a | n/a | n/a | n/a |
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| 2026-W40 | n/a | n/a | n/a | n/a |
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Lighthouse trend points are based on sampled pages and can vary week-to-week depending on which pages were sampled.
Sustainable? — page weight, requests & carbon over time
Median page weight (KB) over 17 weeks — worse (2756 KB → 2906 KB)
Median page weight (KB) by week
| Week | Median page weight (KB) |
|---|
| 2026-W24 | 2756 KB |
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| 2026-W25 | 2756 KB |
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| 2026-W26 | 2755 KB |
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| 2026-W27 | 2754 KB |
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| 2026-W28 | 2755 KB |
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| 2026-W29 | 2763 KB |
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| 2026-W30 | 2762 KB |
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| 2026-W31 | 2755 KB |
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| 2026-W32 | 2757 KB |
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| 2026-W33 | 2757 KB |
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| 2026-W34 | 2903 KB |
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| 2026-W35 | 2905 KB |
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| 2026-W36 | 2913 KB |
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| 2026-W37 | 2912 KB |
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| 2026-W38 | 2912 KB |
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| 2026-W39 | 2905 KB |
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| 2026-W40 | 2906 KB |
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Median requests per page over 17 weeks — worse (42 → 62)
Median requests per page by week
| Week | Median requests per page |
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| 2026-W24 | 42 |
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| 2026-W25 | 42 |
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| 2026-W26 | 42 |
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| 2026-W27 | 42 |
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| 2026-W28 | 42 |
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| 2026-W29 | 42 |
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| 2026-W30 | 42 |
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| 2026-W31 | 42 |
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| 2026-W32 | 42 |
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| 2026-W33 | 42 |
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| 2026-W34 | 61 |
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| 2026-W35 | 62 |
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| 2026-W36 | 62 |
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| 2026-W37 | 62 |
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| 2026-W38 | 62 |
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| 2026-W39 | 62 |
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| 2026-W40 | 62 |
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Mean CO₂ per page (g) over 17 weeks — worse (0.4207 g → 0.4453 g)
Mean CO₂ per page (g) by week
| Week | Mean CO₂ per page (g) |
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| 2026-W24 | 0.4207 g |
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| 2026-W25 | 0.4207 g |
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| 2026-W26 | 0.4183 g |
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| 2026-W27 | 0.4215 g |
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| 2026-W28 | 0.421 g |
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| 2026-W29 | 0.4238 g |
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| 2026-W30 | 0.4248 g |
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| 2026-W31 | 0.417 g |
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| 2026-W32 | 0.4218 g |
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| 2026-W33 | 0.4207 g |
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| 2026-W34 | 0.4468 g |
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| 2026-W35 | 0.4424 g |
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| 2026-W36 | 0.4505 g |
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| 2026-W37 | 0.4459 g |
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| 2026-W38 | 0.4454 g |
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| 2026-W39 | 0.4395 g |
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| 2026-W40 | 0.4453 g |
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Findable? — readability over time
Reading ease (Flesch) over 17 weeks — better (13 → 14.2)
Reading ease (Flesch) by week
| Week | Reading ease (Flesch) |
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| 2026-W24 | 13 |
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| 2026-W25 | 12.6 |
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| 2026-W26 | 12.6 |
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| 2026-W27 | 13 |
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| 2026-W28 | 14.2 |
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| 2026-W29 | 22 |
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| 2026-W30 | 14.2 |
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| 2026-W31 | 19 |
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| 2026-W32 | 16 |
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| 2026-W33 | 15.6 |
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| 2026-W34 | 15 |
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| 2026-W35 | 14 |
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| 2026-W36 | 15 |
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| 2026-W37 | 22 |
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| 2026-W38 | 14.2 |
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| 2026-W39 | 15 |
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| 2026-W40 | 14.2 |
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Reading grade (Flesch-Kincaid) over 17 weeks — unchanged
Reading grade (Flesch-Kincaid) by week
| Week | Reading grade (Flesch-Kincaid) |
|---|
| 2026-W24 | 18 |
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| 2026-W25 | 18 |
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| 2026-W26 | 18 |
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| 2026-W27 | 18 |
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| 2026-W28 | 18 |
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| 2026-W29 | 17 |
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| 2026-W30 | 18 |
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| 2026-W31 | 18 |
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| 2026-W32 | 18 |
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| 2026-W33 | 18 |
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| 2026-W34 | 18 |
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| 2026-W35 | 18 |
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| 2026-W36 | 18 |
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| 2026-W37 | 18 |
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| 2026-W38 | 18 |
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| 2026-W39 | 18 |
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| 2026-W40 | 18 |
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Words per page (median) over 17 weeks — 8173 → 4396
Words per page (median) by week
| Week | Words per page (median) |
|---|
| 2026-W24 | 8173 |
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| 2026-W25 | 4382 |
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| 2026-W26 | 7271 |
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| 2026-W27 | 4396 |
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| 2026-W28 | 7005 |
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| 2026-W29 | 4396 |
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| 2026-W30 | 4686 |
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| 2026-W31 | 4686 |
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| 2026-W32 | 4372 |
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| 2026-W33 | 4396 |
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| 2026-W34 | 7005 |
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| 2026-W35 | 7319 |
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| 2026-W36 | 4686 |
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| 2026-W37 | 7001 |
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| 2026-W38 | 4348 |
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| 2026-W39 | 7005 |
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| 2026-W40 | 4396 |
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Trustworthy? — technology & standards over time
Technologies detected over 15 weeks — 10 → 9
Technologies detected by week
| Week | Technologies detected |
|---|
| 2026-W26 | 10 |
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| 2026-W27 | 10 |
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| 2026-W28 | 10 |
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| 2026-W29 | 10 |
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| 2026-W30 | 10 |
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| 2026-W31 | 10 |
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| 2026-W32 | 10 |
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| 2026-W33 | 10 |
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| 2026-W34 | 9 |
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| 2026-W35 | 10 |
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| 2026-W36 | 9 |
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| 2026-W37 | 9 |
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| 2026-W38 | 9 |
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| 2026-W39 | 9 |
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| 2026-W40 | 9 |
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Standards checks passing (%) over 15 weeks — better (50% → 64%)
Standards checks passing (%) by week
| Week | Standards checks passing (%) |
|---|
| 2026-W26 | 50% |
|---|
| 2026-W27 | 50% |
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| 2026-W28 | 50% |
|---|
| 2026-W29 | 50% |
|---|
| 2026-W30 | 64% |
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| 2026-W31 | 64% |
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| 2026-W32 | 64% |
|---|
| 2026-W33 | 64% |
|---|
| 2026-W34 | 64% |
|---|
| 2026-W35 | 64% |
|---|
| 2026-W36 | 64% |
|---|
| 2026-W37 | 64% |
|---|
| 2026-W38 | 64% |
|---|
| 2026-W39 | 64% |
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| 2026-W40 | 64% |
|---|
Security checks passing (%) over 15 weeks — unchanged
Security checks passing (%) by week
| Week | Security checks passing (%) |
|---|
| 2026-W26 | 63% |
|---|
| 2026-W27 | 63% |
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| 2026-W28 | 63% |
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| 2026-W29 | 63% |
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| 2026-W30 | 63% |
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| 2026-W31 | 63% |
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| 2026-W32 | 63% |
|---|
| 2026-W33 | 63% |
|---|
| 2026-W34 | 63% |
|---|
| 2026-W35 | 63% |
|---|
| 2026-W36 | 63% |
|---|
| 2026-W37 | 63% |
|---|
| 2026-W38 | 63% |
|---|
| 2026-W39 | 63% |
|---|
| 2026-W40 | 63% |
|---|