InspectDev
InspectDev vs CSS Peeper
CSS Peeper is a read-only style inspector used by half a million designers. InspectDev reads, edits, and keeps going past CSS into audit and extraction.
CSS Peeper is a Chrome extension used by more than 500,000 designers and developers to inspect styles without opening DevTools. Hover an element to read its CSS properties. Explore every colour on a page and export the palette in one click. Dig into typography, pull out the assets buried in the code, and check contrast against accessibility standards. It is deliberately read-only and design-first: you look, you copy the value, you take it elsewhere to make the change.
- ✓You want to fix what you find — live CSS, text, and element editing, not just values to copy.
- ✓You need the page past CSS: meta tags, cookies, storage, tables, links, responsive testing.
- ✓You would rather pay once than keep a subscription for continued access.
- ✓You want the same tool on Chrome, Edge, Brave, and Firefox.
- —You inspect far more than you edit, and you want the cleanest read-only view.
- —You are a designer matching a site’s palette and type for brand work.
- —You want a strong free tier and a low monthly entry price.
- —You want a mature extension with a long public track record.
| Capability | InspectDev | CSS Peeper |
|---|---|---|
| Hover-to-inspect without opening DevTools | ✓ | ✓ |
| Read-only style inspection | ✓ | ✓ |
| Live CSS editing with preview | ✓ | — |
| Live text editing on the page | ✓ | — |
| Font list and font changer | ✓ | Typography details |
| Colour picker and palette export | ✓ | ✓ |
| Extract images and assets | ✓ | ✓ |
| Contrast and accessibility checks | ✓ | ✓ |
| Move and delete elements | ✓ | — |
| Page ruler and spacing measurement | ✓ | — |
| Export elements | ✓ | Copy styles |
| Responsive preview across devices | ✓ | — |
| SEO and meta tag inspector | ✓ | — |
| Cookie and browser storage editor | ✓ | — |
| Table capture to CSV or JSON | ✓ | — |
| Pricing model | $29 lifetime | Free; Pro from $2.49/mo |
✓ included — not available · Features and pricing checked against each product’s public documentation, September 2026.
Reads and fixes
CSS Peeper tells you the value. InspectDev lets you change it — edit the CSS, retype the copy, move the element — and watch the page respond before you touch your stylesheet.
Past CSS into the rest of the page
Meta tags, cookies and storage, tables, links, breakpoints. CSS Peeper is a CSS tool by design. InspectDev is a page tool that happens to start at CSS.
Buy once
The full toolkit for $29 once, rather than Pro at $2.49/month or Ultra at $4.99/month billed annually.
The colour, typography, and overview screens are genuinely elegant and tuned for reading rather than changing. For pure reference work it feels lighter.
A large, loyal base and a long list of public recommendations from designers — trust a newer extension has not earned yet.
The free version covers core inspection, and Pro starts at $2.49/month billed annually if you would rather not buy outright.
Years of iteration on one narrow job, with few rough edges.
CSS Peeper and InspectDev share a starting point — skip DevTools, hover, read the styles — and then diverge. CSS Peeper stays read-only and does that one job extremely well. InspectDev keeps going from reading to editing, and from CSS to the rest of the page. If you are a designer who wants the cleanest reference view, CSS Peeper is excellent. If you need to understand a page and then change it, InspectDev takes you all the way through.
See it on the page you have open
Install the free version and try it on any site — no account, no setup. Upgrade once when you want the full toolkit.
