Product Engineering · 2026
Neziora Tools — 31 Client-Side Utilities
A production utility suite where every document operation runs inside the user browser, with no server-side file handling at all.
- Client
- Neziora
- Discipline
- Product Engineering
- Year
- 2026
The problem
Every online PDF and document tool asks users to upload private files to an unknown server. For contracts, identity documents and financial records, that is an unacceptable trade.
The approach
We built the entire suite on browser primitives: Canvas for image work, PDF.js and pdf-lib for documents, Web Crypto for hashing and password generation, and Web Workers for anything expensive enough to block the interface.
A single shared loader keeps the initial page light and fetches heavier engines only when a tool is opened.
The result
Thirty-one tools in production across six suites, with a zero-byte server payload boundary and no account requirement.
- PDF merge, split, rotate, watermark, organise and extract
- Image compression, conversion, resizing and metadata sanitisation
- Sri Lankan tax, tariff, land and identity utilities
- Developer utilities for hashing, JSON, Markdown and passwords