Inline ‑ Critical CSS

Shopify seo app by Speed Boostr·Inline your Critical CSS to eliminate render-blocking resources. This will speed up your store.

Snapshot

3.60(7 reviews)#198of 901 inSEO

Ongoing.AI tracks Inline ‑ Critical CSS daily — category rank, keyword positions in App Store search, install footprint, listing changes, and reviewer sentiment — back to when we first observed the listing.

CategoriesSEO

Rating

3.60

7 reviews

Pricing

From $10/mo

paid

Built for Shopify

No

Years live

5

launched Mar 29, 2021

Last updated

Jun 30, 2026

Shopify listing

Catalog position

Where Inline ‑ Critical CSS sits in the App Store.

Rank and percentile inside the SEO category — the competitive shape of the niche around this app.

Rank in SEO

#198

of 901 active apps

Review count percentile

77th

vs category siblings

Rating percentile

58th

vs category siblings

Years on App Store

5

since 2021

Listing change cadence

What Inline ‑ Critical CSS has changed lately.

Every pricing tweak, tagline refresh, and Shopify-side listing ping. Captured from Ongoing.AI’s per-scrape diff log — the cadence and the content of changes, in one strip.

Listing changes · last 21 days+14shopify_lastmod: 2026-06-04 → 2026-06-15shopify_lastmod: 2026-06-15 → 2026-06-16shopify_lastmod: 2026-06-16 → 2026-06-30Jun 13, 26Jun 23, 26Jul 4, 26

Shopify Lastmod · Jul 1

2026-06-16 → 2026-06-30

Shopify Lastmod · Jun 17

2026-06-15 → 2026-06-16

Shopify Lastmod · Jun 16

2026-06-04 → 2026-06-15

PricingIdentity & listingCadence

Reviews

What merchants are saying

3.60(7 reviews)
  • 69%positive9
  • 8%neutral1
  • 23%negative3

Popular mentions

  • billing issue
  • app installation
  • customer support

Top themes

  1. billing issue1
  2. app installation1
  3. customer support1

What merchants praise

“KRAZY! That's all I can say. What a totally brilliant app. For a measly $10 our Pagespeed score went up >25%. How can you beat that? Try the app – you'll see. And then once you experience what we've experienced – continue to periodically rerun the app from time to time, to sort out changes that you make to your store. Possibly the best $10 investment ever!”
ExcellentSupply.com · 5★ · 2024-12-31

What merchants complain about

“Não funciona … Fiquei semanas esperando correção pelo suporte e sem retorno agradável .. Não indicado”
Bs Multimarcas · 1★ · 2025-02-08

Plans

Inline ‑ Critical CSS pricing tiers.

One-time charge

$10 one-time charge

    Capabilities

    What Inline can do.

    The 4 capabilities Inline lists across its category, in Shopify’s own taxonomy. Pulled directly from the App Store listing.

    SEO tools

    1
    • Content optimization

    Monitoring performance

    3
    • Analytics
    • Speed analysis
    • Testing

    FAQ

    Inline — frequently asked questions.

    What is Inline on Shopify?
    Inline, officially listed on the Shopify App Store as Inline ‑ Critical CSS, is a Shopify app in the SEO category. With Critical CSS, the visitor gets the base styling as quickly as possible; because it’s right there in a <style> element in the document’s <head>, there’s: no extra request to the server for the stylesheet & no waiting for the requested styles to load in and render. The below-the-fold, or non-critical, styling is then loaded in the background to avoid render-blocking. It averages 3.60 out of 5 across 7 merchant reviews on the Shopify App Store.
    How much does Inline cost?
    Inline is priced at $10/month on the Shopify App Store.
    Is Inline free?
    Yes — Inline offers a free plan alongside paid options. Paid plans start at $10/month for advanced features.
    When was Inline launched?
    Inline launched on March 29, 2021 — over 5 years on the Shopify App Store. In that time it has gathered 7 merchant reviews.
    Is Inline Built for Shopify?
    Inline does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.
    What are the best Inline alternatives?
    Merchants commonly compare Inline with Judge.me, Avada AI SEO Image Optimizer, Yotpo, and BOOSTER AI SEO OPTIMIZER. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.

    Alternatives

    Apps merchants pick instead.

    Judge.me

    Judge.me Product Reviews App

    5.00★41,112

    Known for: ease-of-use

    Avada SEO Suite

    Avada AI SEO Image Optimizer

    4.90★4,466

    Known for: refund-issues

    Yotpo

    Yotpo: Product Reviews App

    4.80★4,404

    Known for: data-access

    Booster SEO

    BOOSTER AI SEO OPTIMIZER

    4.80★4,266

    Known for: bug

    Browse more inAll SEO apps

    Methodology

    Where the numbers come from.

    Ratings, review counts, pricing tiers, “Built for Shopify”, launch date, and category memberships come from the live Shopify App Store listing — refreshed daily by Ongoing.AI’s crawler. The review-count trajectory is the diff between today’s snapshot and snapshots from 7 and 28 days ago. Topic counts and sentiment come from the review corpus, topic-tagged with Claude. Install footprint is observed via Ongoing.AI’s tech-detection pass against actively-tracked Shopify storefronts. Catalog position is computed at snapshot time against every active app sharing the primary category. Snapshot generated .

    Find every brand running Inline ‑ Critical CSS.

    Ongoing.AI tracks every Shopify brand’s app stack daily. Pull the full install list, filter by vertical or geography, and catch the moment merchants install — or churn off.

    Track Inline ‑ Critical CSS — free Start free

    Prefer the source? View Inline ‑ Critical CSS on the Shopify App Store ↗