About Momo Toolbox
Tools, but warmer
Momo Toolbox is a privacy-focused collection of online tools. We offer 21+ practical tools covering text processing, developer utilities, image handling, productivity, and more. All data is processed locally in your browser — nothing is uploaded, instant and private.
Our Philosophy
Most online tool websites suffer from two issues: user tracking for ad targeting, and poor UX with popups, slow loads, and clunky flows. We want to change that.
Core principles of Momo Toolbox:
- Privacy first: all tool processing happens in your browser. We collect no personally identifiable information
- Blazing fast: built on Astro's static-first architecture with on-demand hydration — lightning quick
- Warm design: amber accent + soft cream background, a humane alternative to cold tool UIs
- Core tools free forever: unlimited use of core tool functionality, no registration, no paywall
Tech Stack
Built with modern web technologies:
- Framework: Astro 5.18 (Islands architecture, static-first)
- Interactivity: React 19 (hydrated only where needed)
- Styling: Tailwind CSS v4 (atomic CSS, zero runtime cost)
- Hosting: Cloudflare Pages (global CDN)
- Bilingual: native Chinese and English, synced across components
This architecture delivers extreme performance: the initial HTML is just tens of KB, all static assets are served via global CDN, and you get millisecond-level response anywhere in the world.
Available Tools
21 tools are currently available across these categories:
- Text tools: Markdown editor and more
- Developer tools: JSON formatter, Base64, URL encoder, timestamp, hash, JWT decoder, UUID and more
- Image tools: image compressor and more
- Productivity: QR code generator, password generator, color converter, unit converter and more
We are constantly adding new tools — feel free to email us your needs.
Privacy Commitment
We take your privacy seriously:
- All tool inputs and outputs are processed in your browser and never sent to a server
- We do not use cookies to track you
- We use Cloudflare Web Analytics (privacy-friendly, no cookies, no cross-site tracking) for aggregated traffic insights. We do not use tracking-based analytics like Google Analytics
- We only use localStorage for UI preferences (language, theme, favorites) — data stays on your device
- Third-party services are limited to Cloudflare (hosting and analytics) and Google Fonts (fonts), each with their own privacy policies
See our Privacy Policy for details.
Future Plans
We are continuously expanding the toolset and exploring the following:
- More tools: HTTP status code lookup, AES encryption, Pomodoro timer coming soon
- Batch processing: batch image compression, batch JSON formatting, etc.
- User system: optional accounts to sync favorites and preferences across devices
- API service: tool API access for developers
All newly added core tools will remain free forever. Some advanced features (such as batch processing, high-frequency API calls) may introduce pricing in the future, but will never affect the free use of core tools.
Contact Us
If you have any questions, suggestions, or bug reports, please email us at [email protected].
We take every feedback seriously and reply as soon as possible.