AR
Pro from $3.99
AuthRoam
Multi-environment API auth token cockpit
browser extensions for Chrome & Edge
Browser extensions for Chrome & Edge — privacy-first, made in-house.
We build local-first Chrome and Edge extensions for productivity, development and security. Core tasks stay on your device; optional online features are disclosed and connect only when you enable them. This is our studio preview, not a third-party directory.
Featured & new
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IC
Pro from $3.99
Image Converter
Local, auditable image format conversion
JP
Free
JSONPeek
Inspect and format JSON responses inline
CV
Pro from $3.99
CookieVault
Local-first cookie editor and auto-cleaner
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A reproducible privacy checklist for Chrome screenshot extensions: inspect activeTab and host permissions, verify data disclosures, and test whether captures leave the device.
Questions people ask
Are these browser extensions free?
Several are completely free with no paywall; the rest have a free tier plus an optional Pro upgrade. Every extension's page states exactly what is free, and one bundle subscription unlocks Pro across all of the paid extensions.
Do these Chrome extensions also work on Microsoft Edge?
Yes. Every extension is built on Manifest V3 and runs on Chrome, Edge and other Chromium browsers from the same build; several also support Firefox. Each product page lists its supported browsers.
Do the extensions collect or sell my data?
No. Every extension processes your data locally in the browser — no analytics, no telemetry, no third-party SDKs, and nothing is ever sold. Privacy-sensitive features run without the data leaving your device.
Is this an official store or a third-party directory?
This is our own storefront. We build and support every extension listed here — we are the developer, not a directory reselling other people's add-ons. Updates and support come directly from us.
How do I install an extension?
Open the extension's page and click Add to Chrome (or your browser's equivalent) to install it from the official Web Store. Installing is free; any Pro features are unlocked separately with a licence key or a signed-in account.
18 extensions
Developer tools 8
AR
Pro from $3.99
AuthRoam
Multi-environment API auth token cockpit
NR
Pro from $3.99
NetworkRules
Intercept, rewrite and mock network requests
RK
Pro from $3.99
ReproKit
Zero-signup, locally-redacted bug repro packager
DT
Free
Dev Toolbox
Bundled client-side developer utilities — JWT, Base64/URL, timestamp, UUID, regex — in one popup.
JP
Free
JSONPeek
Inspect and format JSON responses inline
CK
Free
Contrast Checker
Computes color contrast ratios and flags AA/AAA WCAG compliance across a page.
SR
Free
Screen Ruler
Overlay ruler to measure spacing, pixels, and element boxes, with optional color picking.
FF
Free
Font Finder
Hover any element to reveal its font, weight, and size, and copy the CSS font stack.
Privacy & security 2
CV
Pro from $3.99
CookieVault
Local-first cookie editor and auto-cleaner
IC
Pro from $3.99
Image Converter
Local, auditable image format conversion
Research & citation 2
Productivity 6
DK
Pro from $3.99
DozeKeep
Tab suspension + never-lose sessions + cloud backup
PI
Free
PDF to Image
Fully local PDF-to-image and image-to-PDF conversion — files never leave the browser.
PM
Free
PDF Merge
Merge, split, and reorder PDF pages fully locally, with nothing uploaded.
WC
Free
Word Counter
Instant word, character, and reading-time counts on any selected text.
CA
Free
Case Converter
Popup case conversion plus text cleanup and slugify.
OC
Free
Image OCR
Screenshot a region and extract its text locally — images stay in the browser.
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