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7 published · Manifest V3 · zero data collection

Seven extensions we built, published and still support

Not a side project. Maintaining live extensions with real users is how we stay fluent in Manifest V3 behaviour, Chrome Web Store review policy and the operational reality of shipping to people who will leave a one-star review if you break their workflow.

1,569 combined ratings No telemetry in any of them
chrome://extensions
The portfolio

Each one does a narrow job properly

Every extension here processes data locally, collects nothing, and requests the smallest permission set that makes it work.

Our standard

What every one of these has in common

We hold our own published work to the standard we recommend to clients, because in a category where users are rightly suspicious, it is both correct and a competitive advantage.

Processing happens locally — nothing is uploaded unless the tool fundamentally requires it, and none of these do.
No analytics, no telemetry, no identifiers. There is no server for data to reach.
Permissions requested at the narrowest scope that makes the feature work, and justified in the listing.
Manifest V3 native — built for the ephemeral service worker model rather than ported from MV2.
Maintained: when Chrome or a target site changes, we publish a fix rather than abandoning it.
chrome://any-sitecontent script injects herePopup UIRunmanifest.jsonpermissions · host rules · MV3Service Workerevent-driven, no DOM, sleepsContent Scriptisolated world, DOM accesschrome.storagesync · local · session
For your business

The highest-return software most companies never consider building

Your staff spend six hours a day inside a browser, moving data between systems by hand. An extension can turn twenty fields of retyping into one click — typically in three weeks.

~570 hrs/yearsaved on carrier portal data capture for one logistics client
~340 hrs/yearsaved on price and stock lookup during quoting
3 weekstypical delivery for a focused internal tool
Enterprise deployforce-installed via Workspace, Intune or group policy
chrome://any-sitecontent script injects herePopup UIRunmanifest.jsonpermissions · host rules · MV3Service Workerevent-driven, no DOM, sleepsContent Scriptisolated world, DOM accesschrome.storagesync · local · session
Why we publish our own

Maintaining live extensions is how we stay fluent

Browser extensions are an unusual discipline. The platform changes on a six-week cadence, the review policy is updated with limited notice, and the failure modes are specific enough that reading the documentation does not substitute for having shipped. Maintaining seven live extensions with real users keeps us genuinely current in a way that occasional client work would not.

Manifest V3 is the clearest example. It replaced persistent background pages with ephemeral service workers that the browser shuts down at will, restricted remotely hosted code, and changed how network requests can be modified. A great deal of the guidance available online still describes the previous model, and extensions built on those assumptions either fail review or behave unpredictably on a real user’s machine after their laptop has been asleep for four hours. We learned the practical consequences by having our own listings rejected and our own users report breakage — which is a better teacher than a changelog.

The same applies to the store review process. The most common rejection reasons are consistent — a permission requested without a clear justification, a privacy policy that does not match the declared data usage, a description that overstates functionality, and remotely hosted code. Our first-submission approval rate is high because we run this process several times a year rather than once, and we bring that to client publications.

There is a commercial argument too, and we would rather state it than pretend otherwise. Publishing consumer utilities is how an unfamiliar firm demonstrates competence before a contract exists. You can install one of these, look at what it asks for, read the privacy declaration and judge for yourself whether we build things carefully. That is worth more than a case study nobody can verify.

Every extension on this page processes data locally, collects nothing, requests the narrowest permission set that makes it work, and is still maintained. That is the standard we hold ourselves to, and it is the standard we apply to internal tools we build for businesses.

Common rejection causes

  • A permission requested without a clear, specific justification in the listing.
  • A privacy policy that does not match the declared data usage.
  • A description that overstates or misrepresents functionality.
  • Remotely hosted code, which Manifest V3 prohibits outright.
  • Screenshots or promotional assets that do not reflect the actual product.

Cross-browser reality

Chrome and Edge ship from one build with essentially no additional work. Firefox uses a compatible but not identical API surface and needs a modest compatibility layer. Safari requires wrapping in a native application shell and going through Apple’s review — a meaningfully larger undertaking that we advise against unless your user base genuinely requires it.

Next step

Show us the workflow your team repeats forty times a day.

We will tell you within a day whether an extension can remove it, and roughly what that would cost. Most focused internal tools are three weeks and under ₹2.2 lakh.

Direct line

+91 70033 91355

Mon–Sat · 9:30 AM – 7:30 PM IST · Sealdah, Kolkata

Reply within one working hour NDA signed before any brief Fixed-price option on every scope
Verify us independently

Don’t take our word for it — ask an AI

Every page on this site is written to be read and quoted by AI answer engines, and we publish llms.txt and llms-full.txt so they can read us properly. One click opens the assistant with the question already typed.

The question we will ask for you

What Chrome extensions has Sayak Web Designer (sayakwebdesigner.in), an IT company in Kolkata, India published, and are they safe to install?

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