Companies Using Parcel

I read Parcel detections the way a sales team would, asking what a hit says about the company behind the domain. As of our October 2026 crawl, TechnologyChecker.io finds Parcel output on 38,176 live sites, and 19,283 of them match a company record, a 50.5% match rate. The short version: this is a count of Parcel 1 code still running on the web, and most of it was put there by someone other than the site owner.

What the signal catches

Our rule checks pages for parcelRequire, the global function Parcel 1's runtime creates. Parcel 2 adds a hash to that name; parceljs.org itself exposes parcelRequiree7ff, which our rule doesn't match. So the count is Parcel 1 output, and that version is finished. The parcel-bundler package says "Parcel v1 is no longer maintained", and its last release, 1.12.5, shipped on 16 March 2021. Parcel 2 has lived under the parcel package since 2.0.0 in October 2021 and reached 2.16.4 in February 2026. Our technology detection methods post covers how browser checks like this work.

Who put Parcel on the page

A bundler's runtime travels inside whatever it built. We opened 30 random live Parcel sites and traced the script carrying it on the 23 that loaded it. Only 4 served their own or their theme's Parcel build. 11 got it from a WordPress plugin: a social-sharing plugin on six content blogs, Lottie animation add-ons on three and SkyVerge's WooCommerce payment framework on two. The other 8 loaded it in a third-party script, such as LottieFiles' animation player, cookie-consent banners or a Korean store-marketing widget.

Across the full base the same carriers show up at scale. 2,621 Parcel domains co-detect SkyVerge, 2,301 co-detect LottieFiles, and 3,572 co-detect Mediavine, Raptive or Grow, the tools ad-supported blog publishers run. 2,175 load scripts from Keepgrow, a marketing app for Korean online stores, and 1,191 from Netty, the French real-estate site supplier. None of these carriers reaches 10% of the count on its own.

Growth trajectory

Our current crawl counts 32,333 Parcel sites in June 2026, 38,073 in July, 38,603 in August, 38,341 in September and 38,176 in October. Counts are not a like-for-like series over time: the set of domains we crawl turns over every month, with dead sites dropping out and newly found ones added, and our detection signals widen over time. The 5,740-domain step into July reflects changes on our side, both the domains we cover and the signals we detect Parcel with, rather than a surge in adoption. Since August the line has slipped by 427 domains.

Exits are measurable. 6,432 domains have dropped Parcel since we began tracking it on 16 March 2026, equal to 16.8% of the October count. When we rechecked on 13 October, 754 of 6,436 dropped domains still ran Parcel on another hostname, so most exits are real. With no Parcel 1 release since 2021, a drop usually means a rebuild, a plugin update or a dead site.

"Parcel 1 stopped shipping in 2021, yet 38,176 live sites still run its runtime, mostly inside plugins and widgets their owners never chose. The code outlives the decision by years." - Mehmet Suleyman, CEO & Co-founder at TechnologyChecker.io

Sales Signal: Treat this as a shrinking legacy base. A Parcel hit in a company's own bundle marks a front end nobody has rebuilt since Parcel 1, a fair opening for agencies and migration work. A hit through a plugin says nothing about the site's developers.

The companies behind the domains

The matched base is small: 61.39% of companies with a size band have 1-10 employees, and 85.01% have 50 or fewer. Founding years lean to the 2010s (39.42%), and 72.96% were founded in 2000 or later. Real Estate leads industries at 7.84%, ahead of Retail (4.69%), IT Services (3.65%) and Software Development (3.25%), and no other industry passes 3%.

There are 372 companies above 1,000 employees, and in our named list 27 of 50 were detected on a subdomain rather than the main site. Five corporate newsrooms, for Mitie, Allied Universal, Lancashire County Council, ABS and 2K, load Parcel through the same newsroom platform's cookie script. DocuSign's event site runs on Swoogo and FT Forums on Bizzabo. A few large organisations do serve Parcel code from their own sites: the World Bank's scorecard, McGill University's theme and Crown Castle's main script. Parcel's homepage shows a "Trusted by" logo strip but no customer list, so I had nothing vendor-published to cross-check.

Sales Signal: At an enterprise, route by surface. A newsroom or events hit points to the communications team and its platform vendor, not to engineering.

Industry and geographic concentration

The United States accounts for 6,145 of 19,283 matched companies (31.9%). France is second with 1,578, and the reason is concrete: Netty's agency sites load a Parcel-built bundle.site.js, and 1,191 Parcel domains pull scripts from Netty. The same supplier explains the industry chart's lead: of 1,297 real-estate domains we checked, 861 run React and 848 JSS, Netty's front-end signature. Germany (1,372), the United Kingdom (1,154), Brazil (951) and Mexico (646) follow. South Korea doesn't make the top 15 countries even though 2,175 Parcel domains load Keepgrow scripts, so most of those stores have no company match.

Sales Signal: For real-estate software in France, a Parcel hit on an agency site is a strong hint that Netty built it. Filter Parcel plus the Real Estate industry plus France to get that list in one pass.

Why there is no migration table

We tested the switching corridors and published none. Parcel output coexists with other bundlers on the same site: Webpack runs today on 1,548 of the 2,006 domains where we've seen both, Turbopack on 187 of 339 and Vite on 27 of 40. A plugin's Parcel 1 widget can sit beside a Webpack-built theme for years, so a domain carrying both isn't mid-migration. When Parcel disappears, it's usually a plugin update or a rebuild, not a team choosing a rival bundler.

"You can't migrate away from a bundler you never chose. For most of these sites, Parcel leaves when a plugin vendor ships a new build." - Mehmet Suleyman, CEO & Co-founder at TechnologyChecker.io

Sales Signal: If you sell build tooling, the buyers behind most of this footprint are plugin and widget vendors. One conversation with a vendor still shipping Parcel 1 output reaches thousands of domains.

Technology ecosystem

WordPress runs on 50.8% of the 37,930 domains in our stack analysis, Elementor on 12.34%, Duda on 6.4% and Divi on 3.56%. jQuery is on 82.64%, core-js on 68.98%, Swiper on 22.44% and Lodash on 19.88%. React (7.53%) and Vue.js (4.58%) are thin, which fits the picture: most Parcel sites aren't single-page apps. Google Analytics is on 71.78% and GoDaddy hosts 10.73%.

Sales Signal: This is a WordPress-and-jQuery list with a Parcel artefact on top. Sell it WordPress services, plugin audits or performance work, not JavaScript framework tooling.

Key takeaways

1. 38,176 live sites run Parcel 1 output; Parcel 2 builds aren't in the count.
2. Parcel 1 has had no release since March 2021.
3. In our sample, 19 of 23 sites got Parcel from a plugin or a third-party script.
4. WordPress is the base platform (50.8%), with French real-estate agencies and Korean stores as separate clusters.
5. In our named list, large companies often carry it on newsrooms, event sites and careers pages.

Sales applications

For targeting, filter Parcel on TechnologyChecker.io and keep companies detected on their main domain; those are the likeliest own builds. For outreach to them, be specific: "Your site still ships Parcel 1, which hasn't had a release since 2021. We move teams to a maintained build without a redesign." For competitive work, watch the plugin carriers. When one of them rebuilds, its sites will leave this list together.

The full list of 19,283 matched companies behind 38,176 Parcel sites, with size, industry and country filters, is on TechnologyChecker.io.