DomoDomo
A multi-purpose, open-source web utility suite — 100% client-side, local-first, and privacy-respecting.

Most online utility sites — like PDF editors, file format converters, and image compressors — require uploading sensitive documents to third-party cloud servers. This introduces significant privacy risks, file size limits, rate limiting, and aggressive advertising trackers.
DomoDomo was built to challenge that model. It is an open-source utility suite running completely client-side in the user's browser, offering high-performance tools without compromising confidentiality.
1. The Zero-Upload Architecture
Unlike cloud utilities, DomoDomo never sends user data across the network:
- Local Browser Sandbox: File manipulation, text processing, and conversions execute locally inside the browser thread and Web Workers.
- Zero Data Collection: Documents, images, audio clips, and code snippets never touch external servers or cloud storage buckets.
- Offline Capable: Once loaded, core utility modules function seamlessly without an active internet connection.
2. Core Capabilities
The platform brings together essential daily digital utilities under a single unified, lightweight interface:
- Document & PDF Tools: Merge, split, compress, extract pages, and convert PDF documents directly in memory.
- Image Transformation: Format conversion (PNG, JPEG, WebP, AVIF), lossless optimization, and aspect ratio resizing.
- Media & Audio Utilities: Fast client-side audio encoding, trimming, and spectrogram analysis.
- Developer & Text Utilities: Regex matchers, JSON validators, base64 decoders, and markdown formatters.
3. Tech Stack & Performance
To achieve near-native desktop speeds inside a web browser, DomoDomo utilizes modern web primitives:
- WebAssembly (WASM): Intensive computing pipelines (codecs, PDF manipulation engines) are compiled to WASM for high computational throughput.
- WebGPU & Canvas2D: Image filters and graphical rendering tasks leverage client hardware acceleration.
- React & Tailwind CSS: Clean, responsive user interface with instant interaction feedback and dark mode support.
- Vercel: Static edge delivery ensuring zero cold-starts and global CDN caching.