ManifestGo
Summary
Getting ChatGPT to write a Chrome extension means wrestling with snippets that don't connect, a manifest you have to write yourself, and icons you have to source separately — ManifestGo skips all of that and ships a complete, installable Manifest V3 package from a single prompt.
The core workflow is a one-prompt generation: describe what you want, and ManifestGo produces the popup, background service worker, content scripts, options page, and icons as a validated .zip you load directly into Chrome or push to the Web Store. The vendor states full-stack support — Supabase or Firebase auth, per-user database reads and writes, and encrypted API keys stored in a vault so credentials never surface in the bundled extension code. Where it earns trust is specificity: Manifest V3 compliance is validated before download, not assumed. The ceiling appears when your extension logic outgrows a prompt — complex branching between surfaces, custom build steps, or extension-specific APIs outside the generated scaffold require you to edit the unminified code yourself, which is possible but puts you back in a standard editor.
Bottom line: Pick ManifestGo to ship a working site blocker or Pomodoro timer in an afternoon without touching a build tool — plan to own the code directly when your extension needs logic that a prompt cannot fully specify.
Pricing Plans
Usage-Based- Price
- $15 for 300 credits
- Free Tier
- Limited credits to try generation
Free
Limited credits to try the builder
- Basic prompt-to-extension generation
Pro
300 credits; unused credits roll over up to 3 months
- Full Manifest V3 generation
- Full-stack features
- Live preview and .zip download
View full pricing on manifestgo.app →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Generates a validated Manifest V3 package — popup, service worker, content scripts, and icons — in one pass, so you skip the manifest-writing and file-wiring work that trips up first-time extension builders.
- Full-stack integrations with Supabase and Firebase auth are included in generation, which means you are not manually wiring authentication and database calls into a Chrome extension context where the wrong setup leaks credentials.
- Encrypted secrets vault keeps API keys and credentials in the background service worker's scope and out of bundled extension code, so you are not accidentally shipping keys to end users.
- Output is unminified source code with no lock-in, so you can edit every file in any editor and publish under your own Chrome Web Store account without attribution.
- Live popup preview before download lets you catch UI problems without loading the extension into Chrome, saving the unzip-reload-inspect cycle for every iteration.
Cons
Sign in to edit- Complex cross-surface logic — conditional behavior that spans popup, content script, and background worker depending on what the last step returned — hits the single-prompt model's ceiling fast. Teams that need that level of control download the code and maintain it manually, at which point ManifestGo is a scaffolding tool rather than an ongoing development environment.
- No API access means ManifestGo cannot be embedded in a team's existing CI workflow or scripted into a larger build process. Teams that need programmatic extension generation or want to version-control prompt-to-output pipelines will switch to a code-generation approach using a general-purpose LLM API directly.
- Cloud-only delivery with no self-hosted option means generated code and prompts pass through ManifestGo's infrastructure. Teams operating under strict data residency or IP confidentiality requirements cannot use the tool for proprietary extension logic.
About
- Platforms
- Web (Chrome browser extensions)
- API Available
- No
- Self-Hosted
- No
- Last Updated
- 2026-09-22T00:34:54.881Z
Best For
Who it's for
- Non-developers wanting to ship Chrome extensions quickly
- Founders prototyping browser tools without writing code
- Developers needing a starting Manifest V3 scaffold plus full-stack features
What it does well
- Build a website blocker that restricts sites by domain
- Create a Pomodoro timer that runs in the toolbar
- Generate an inline text translator for selected content
- Develop a personal highlight saver with library storage
- Produce extensions with auth, database, and API integrations
Integrations
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Sign Up to ContributeFrequently Asked Questions
- Is ManifestGo free?
- ManifestGo has a permanent free tier alongside paid upgrades (paid plans from $15 for 300 credits). You can keep using a baseline version indefinitely without paying.
- Is ManifestGo open source?
- No — ManifestGo is a closed-source tool. Source code is not publicly available.
- What platforms does ManifestGo support?
- ManifestGo is available on: Web (Chrome browser extensions).
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The prompt-to-extension gap
Getting ChatGPT to write a Chrome extension means wrestling with snippets that don’t connect, a manifest you have to write yourself, and icons you have to source separately. ManifestGo takes a single prompt describing the desired extension and returns a validated Manifest V3 package containing the popup, background service worker, content scripts, options page, and icons as a .zip file ready to load into Chrome or submit to the Web Store.
Generation and integrations
The vendor states the tool adds Supabase or Firebase auth, per-user database reads and writes, and an encrypted API key vault so credentials stay out of the bundled extension code. Manifest V3 compliance is checked before the download is offered. Pricing is usage-based at $15 for 300 credits with a free tier that supplies limited credits for testing generation.
Use cases
Supported examples include a website blocker limited by domain, a toolbar Pomodoro timer, an inline text translator for selected content, a personal highlight saver with library storage, and extensions that include auth, database, and API integrations.
Who it is for / who should skip it
ManifestGo suits non-developers who want to ship Chrome extensions quickly, founders prototyping browser tools without writing code, and developers who need an initial Manifest V3 scaffold with full-stack features. It reaches its limit on complex cross-surface logic that spans popup, content script, and background worker; teams needing that control or API access for CI workflows must edit the output manually or look elsewhere.