Comparison · 2026
ManifestGo vs Kromio
Kromio and ManifestGo are two of the more capable AI Chrome extension builders around. Both take a prompt and give you an extension. The difference shows up after the first generation — in how much control you have, how safely you can iterate, and how close the output is to something you'd actually publish.
ManifestGo vs Kromio at a glance
| Capability | ManifestGo | Kromio |
|---|---|---|
| Output | Complete MV3 project: manifest, service worker, popup, options page, content scripts, custom icons, .zip | AI-generated Chrome extension from a prompt |
| Source-code access | Full file tree, editable, always downloadable | Depends on plan and export options |
| Iteration model | Plan → clarify → build → review. Edits are surgical patches, so working code isn't rewritten | Prompt-driven regeneration and edits |
| Version history | Immutable snapshots of every build with diff and download | Not a headline feature |
| Validation | Deterministic MV3 checks (permissions, paths, icons) before download | Relies mainly on model output quality |
| API keys / full-stack | Automatic secret detection with an encrypted project vault | Primarily client-side extensions |
| Pricing | $15 for 300 credits, 14-day money-back guarantee, free tier to try | See Kromio's site for current pricing |
Based on publicly documented product information at the time of writing. Kromio ships updates regularly — check their site for the latest.
Where ManifestGo is strong
- Production-ready Manifest V3 output you can load or publish the same hour
- Patch-based edits that don't destroy working code
- Version history — roll back or download any previous working build
- Custom SVG-derived icon sets at every required size
- Encrypted secrets vault for extensions that need third-party APIs
- Transparent credit pricing with a free tier
Where Kromio is strong
- Clean prompt-to-extension experience
- Fast for simple, single-purpose extensions
- Actively developed with its own feature set
- Reasonable choice if you don't need source-level control
Choose ManifestGo if
- • You want to publish to the Chrome Web Store and need a clean MV3 package that passes review.
- • You'll iterate on the extension over time and need safe, reversible edits.
- • You want to read and modify the code yourself.
- • Your extension needs API keys handled securely.
Choose Kromio if
- • You want a quick, simple extension and don't plan to maintain it.
- • You're already using Kromio and it fits your workflow.
- • Source-level control isn't important to you.
The verdict
Kromio is a real competitor and a fine choice for quick, simple extensions. ManifestGo is built for the step after that: complete Manifest V3 output, editable source, patch-based iteration, version history and validation before download. If your extension is going to be a product rather than a demo, that's where the difference compounds — and the free tier means you can judge for yourself.