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Headroom.js

79,192

companies run it, 0.15% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 139,280 live hosts run it, of 191,809,695 hosts in the index, 0.07%. A host is a website, not a company.

Companies by month

Companies, monthly, on the fixed panel of sites crawled since 2020of 54,527,857 in the indexlanding 12 Sept 2026

79,192 at Sept 26; 81,277 twelve months earlier, -2,085, -2.6% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020

The 69 numbers in this chart
MonthCompaniesObserved on the panel
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2021-0500
2021-0600
2021-0700
2021-0800
2021-0900
2021-1000
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2021-1200
2022-0100
2022-0200
2022-0300
2022-0400
2022-0500
2022-0600
2022-0700
2022-0800
2022-0900
2022-1000
2022-1100
2022-1200
2023-0100
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2023-0300
2023-0400
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2023-0700
2023-0800
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2023-1000
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2024-0100
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2024-0300
2024-0400
2024-0500
2024-0600
2024-0700
2024-087513
2024-091,683291
2024-106,7221,161
2024-1113,3142,300
2024-1219,7833,418
2025-0127,1464,689
2025-0233,9585,866
2025-0340,7707,043
2025-0447,8298,262
2025-0554,5769,428
2025-0661,65110,650
2025-0768,61111,853
2025-0875,53413,049
2025-0981,27714,041
2025-1085,48114,767
2025-1186,25414,900
2025-1285,47414,766
2026-0184,85014,658
2026-0284,14914,537
2026-0384,21814,549
2026-0483,85714,486
2026-0583,13714,362
2026-0682,68014,283
2026-0781,64714,105
2026-0880,54313,914
2026-0979,19213,680

Both denominators, and a third

Shares of the same 79,192each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.15%
companies running anything in JavaScript Libraries
40,118,208
0.20%
companies running anything in UI components and widgets
20,523,207
0.39%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, Headroom.js is rank 38 of 116 technologies in UI components and widgets.

Open as a segment

79,192 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-headroom-js

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

A small JavaScript library to hide or reveal headers on scroll.

Headroom.js lets developers show, hide, or pin headers based on scroll direction to save vertical space. It is open source and used to enhance site navigation behavior.

Kindlibrary
VendorWicky Nilliams, wicky.nillia.ms
Slugheadroom-js
Deploymentself-hosted
Pricingfree
Open sourceyes
First discovered2025-02-02
Last discovered2026-09-10
Taxonomy releasetax-2026.10