- INSO ran a full PageSpeed audit for BANDWERK (bandwerk.de), recommended focusing on Core Web Vitals, and completed the optimization, per the public portfolio credit.
- The goal was PageSpeed for user experience and SEO — the credit frames speed as a ranking and UX lever, in its own words.
- The credit’s outcome phrase — scores "to the green zone" — is self-published portfolio wording, quoted and labeled on this page, never presented as a client-verified metric.
- Checked on August 31, 2026: bandwerk.de is live on Shopify, titling itself a premium Apple-accessories store — Apple Watch straps to iPhone 17 cases.
01 Introduction
Speed work is the easiest kind of agency claim to inflate and the hardest to verify after the fact — scores drift with every app install, theme update, and Chrome release. So this case study handles its one outcome phrase with tweezers: the public portfolio credit documenting INSO's engagement for BANDWERK says the optimization "got the Core Web Vitals scores to the green zone", and this page quotes that as the credit's own self-published wording rather than presenting it as a measured, client-verified result.
What the credit documents without qualification is the shape of the work: a full PageSpeed audit, a deliberate narrowing of the effort to Core Web Vitals, and the completed optimization.
02 The client
BANDWERK runs its store at bandwerk.de — the credit identifies the client through that linked project URL. The live site, checked on August 31, 2026, is a German-language storefront titled "Edles Apple Zubehör » Apple Watch Armbänder, iPhone 17 Hüllen & mehr" — premium Apple accessories, from Apple Watch straps to iPhone 17 cases. (That description comes from the live site's own title; the credit itself describes only the work.) For a brand selling design-led hardware accessories, the storefront's feel is part of the product — and nothing undercuts a premium impression faster than a slow page.
03 The brief
The credit states the goal plainly: improve PageSpeed for user experience and SEO. That pairing is the credit's own framing, and it is the honest one — speed is simultaneously a thing shoppers feel on every tap and a signal search engines score. A store that treats it as only a ranking chore optimizes the wrong things; a store that treats it as only polish never justifies the engineering time.
04 What INSO did
INSO's contribution, per the credit:
- A full PageSpeed audit — measure first; a Shopify store's speed problems are rarely where intuition points, and an audit separates theme-level causes from app-injected ones.
- A recommendation to focus on Core Web Vitals — not chasing a vanity score, but the three user-centric metrics Google actually folds into ranking. Narrowing the target is itself the deliverable: it decides which fixes matter.
- The completed optimization — the credit closes with its outcome phrase, scores "to the green zone", which this page attributes to the credit's own self-published wording.
05 The speed lane
This engagement isn't a one-off: the same audit-first, Core-Web-Vitals-scoped approach appears in the Travel Cat case study, whose second public credit documents a store-wide Core Web Vitals audit aimed at clearing red-flagged pages from Google's report. Two independent public credits describing the same methodology — audit, narrow to CWV, then fix — is what a repeatable process looks like from the outside. For the mechanics of what actually moves a Shopify speed score, see our standalone guide to the Shopify PageSpeed score.
06 The public record
Everything on this page traces to the portfolio credit "Shopify PageSpeed Optimization" (published May 31, 2023) on the Upwork profile of INSO's engineering lead, Oleksandr (Alex) Mashkovtsev, at upwork.com/freelancers/alexmv (captured August 31, 2026), plus a live check of bandwerk.de the same day.
| Detail | Value | Status |
|---|---|---|
| Portfolio credit | Shopify PageSpeed Optimization (published May 31, 2023) | Public; client identified via the credit's linked project URL |
| Client | BANDWERK (bandwerk.de) — German premium Apple-accessories storefront, per the live site's own title | URL from the credit; description from the live site |
| Goal | Improve PageSpeed for user experience and SEO | Stated in the credit |
| The work | Full PageSpeed audit; recommendation to focus on Core Web Vitals; completed optimization | Stated in the credit |
| Outcome wording | Core Web Vitals scores "to the green zone" | The credit's own self-published phrase — quoted, not client-verified; no numeric scores reported |
| Live status | bandwerk.de returns 200 on Shopify, actively trading | Checked August 31, 2026; current theme is a later deployment, not claimed as INSO's |
| Reported outcomes | No numeric metrics — no before/after scores, conversion, or revenue figures | Nothing claimed on this page |
The portfolio credit states no engagement dates beyond its own publication date, no hours, no fees, and no team size — so this page claims none. The "green zone" outcome is the credit's own self-published wording, not a client-verified assessment, and the credit reports no numeric speed scores. The live check verifies only that bandwerk.de is live on Shopify as of August 31, 2026; it says nothing about the store's current speed and does not attribute the current production theme to INSO. Upwork's public data also does not state which contract this project belongs to, so this page draws no connection between this credit and any contract record.
07 Conclusion
The BANDWERK engagement is a speed story told with its receipts face-up: an audit, a deliberate narrowing to Core Web Vitals, a completed optimization — and an outcome phrase this page quotes as the credit's own words instead of borrowing its glow. Paired with the Travel Cat audit credit, it documents a repeatable speed practice, not a lucky score.
For an engagement documented through independently verified third-party sources, see the Goodfair case study; for other credits with the same sourcing discipline as this page, see LifeVac Europe, BDGE, and Antinol.
Is your store fast where shoppers feel it? Ask us for a speed audit.
07 Frequently asked questions
- What did INSO do for BANDWERK?
- Per the public portfolio credit: a full PageSpeed audit of the Shopify store, a recommendation to focus the effort on Core Web Vitals, and the completed optimization. The credit frames the goal as improving speed for user experience and SEO.
- Who is BANDWERK?
- The credit identifies the client via its linked project URL, bandwerk.de. The live site — checked August 31, 2026 — is a German-language storefront titled "Edles Apple Zubehör » Apple Watch Armbänder, iPhone 17 Hüllen & mehr": premium Apple accessories, from Apple Watch straps to iPhone 17 cases. That description comes from the live site, not the credit.
- Did the Core Web Vitals scores really reach the green zone?
- That phrase is the credit’s own self-published portfolio wording, and this page quotes it as exactly that — it is not a client-verified metric, and no third-party source on this page corroborates it. The credit reports no numeric before/after scores, so this page claims none. What is independently checkable is narrower: the store was live on Shopify when checked on August 31, 2026.
- Is the store INSO built still running INSO’s code?
- This page doesn’t claim that. The engagement documented by the credit was an audit and optimization, not a theme build, and the theme in production when bandwerk.de was checked on August 31, 2026 is a later deployment that does not carry INSO’s schema. The live check verifies the platform and that the store is trading — nothing more.
- Where does this information come from?
- Two public sources: the portfolio credit "Shopify PageSpeed Optimization" (published May 31, 2023) on the Upwork profile of INSO’s engineering lead, Oleksandr (Alex) Mashkovtsev (upwork.com/freelancers/alexmv), which links bandwerk.de as the project URL, and a live check of bandwerk.de on August 31, 2026. This page states nothing beyond them.