Tools
Utilities we actually use while building
Eight focused engineering tools that run in your browser. Each utility includes technical usage notes, data privacy details, and cross-references into related services and in-depth architecture articles.
Data
JSON Formatter & Validator
Pretty-print, minify, and validate JSON in the browser.
Open tool →Data
JSON to CSV / CSV to JSON Converter
Convert between JSON arrays and CSV tables, including file upload.
Open tool →APIs
JWT Decoder
Inspect JWT headers, payloads, and expiry times locally.
Open tool →Planning
API Project Estimator
Scope API complexity, architecture notes, and effort ranges.
Open tool →Planning
Website Cost Estimator
Plan website or web-app investment with configurable ranges.
Open tool →Infrastructure
Uptime Calculator
Convert uptime percentages into monthly and yearly downtime.
Open tool →Operations
Website Launch Checklist
A practical pre-launch checklist for SEO, security, and operations.
Open tool →Data
Timestamp Converter
Convert Unix time to dates and back, in seconds or milliseconds.
Open tool →Privacy & Architecture
Our privacy-first tool architecture
We know how frustrating it is when simple utilities require account signups or send sensitive tokens across external networks:
100% Client-Side Privacy
Payloads, JWT claims, and CSV data are processed locally via browser APIs. We never store or transmit your sensitive data.
Engineered for Operators
Built without intrusive pop-ups, slow bloated dependencies, or unnecessary multi-step signups.
Cryptographic Standards
Conforms to standard specifications including RFC 7519 (JWT), RFC 8259 (JSON), and RFC 4180 (CSV).
Integrated Knowledge
Every tool links directly into deep-dive engineering guides and production architecture blueprints.
Tools FAQ
Frequently asked questions about our browser tools
Do these browser tools send my data or tokens to your servers?↓
No. All parsing utilities — including the JSON Formatter, JWT Decoder, CSV Converter, and Timestamp Converter — execute 100% client-side inside your browser JavaScript runtime. Your tokens, JSON payloads, and CSV spreadsheets never leave your device.
Can I use these developer utilities while working offline?↓
Yes. Once the page is loaded in your browser tab, client-side tools like the JSON Formatter and JWT Decoder continue to function without an active internet connection.
Are the estimation ranges in the calculators binding commercial quotes?↓
No. The Website Cost Estimator and API Project Estimator provide indicative engineering ballparks derived from industry complexity models to assist technical planning. Binding project quotes require formal discovery scoping.
Are these tools free for commercial and organizational use?↓
Yes. All browser utilities published on Palmate Solutions are completely free to use for both personal and enterprise engineering workflows.
How does the Website Launch Checklist persist my verification progress?↓
The checklist stores your completion state directly in your browser's HTML5 local storage (localStorage). No login, session cookie, or server sync is involved, so your checklist items remain immediately available between tabs and device sessions.
Can I request an additional utility or report a bug in an existing tool?↓
Yes. We actively maintain and expand our internal developer toolset based on feedback from practicing engineers and clients. Use our contact form to submit feature suggestions, RFC enhancements, or bug reports.