Less friction.
More progress.
Explore 30 free browser-based tools for technical project management, developer utilities, small business planning, AI safety and AI-assisted workflows. No account and no back-end processing.
A little utility goes a long way.
Useful for quick calculations, delivery planning, data preparation and agent-friendly workflows. These are working client-side tools, not API endpoints.
Marketing Campaign Economics Planner
Explore spend, clicks, leads, media-only acquisition cost and contribution with editable assumptions.
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WCAG Colour Contrast Checker
Check text and background colour ratios and WCAG AA / AAA thresholds in your browser.
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AI Automation Value Planner
Estimate time released, net planning value and payback alongside safety and process-readiness prompts.
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AI Safety Risk Matrix
Score an AI use case across capability, autonomy, external reach and safeguards.
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Agent & Website Interaction Risk Checker
Review risks when AI agents browse, submit forms or take actions on third-party websites.
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Prompt Injection Safeguard Checklist
Check whether an AI workflow has core prompt injection, tool-use and credential safeguards.
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AI Incident Triage Planner
Classify a possible AI or agent-related incident and review immediate response priorities.
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Project ROI Calculator
Estimate project return on investment, annual benefit, payback period and three-year net value before committing resources.
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Sprint Capacity Planner
Plan Agile sprint capacity with team size, workdays, availability and focus rate to estimate usable hours and story-point guidance.
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Project Brief Builder
Generate a structured online business or digital project brief, ready to review with stakeholders or paste into a proposal.
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JSON Formatter & Validator
Validate JSON syntax, pretty-print or minify structured data locally, and download the result. Designed for developers and AI-agent workflows.
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CSV ↔ JSON Converter
Convert straightforward CSV tables into JSON arrays and JSON object arrays back into CSV. Useful for spreadsheets, developers and agents.
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JSON-LD Schema Starter Generator
Create an editable schema.org JSON-LD starter for an Organisation, Service, Article or FAQ page. Output is syntactically valid JSON.
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Robots.txt Rule Tester
Paste robots.txt rules and test whether a user-agent would be allowed to crawl a particular URL path using a simplified rule matcher.
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URL Encoder & Decoder
Encode and decode URL query components for links, APIs and agent workflows without sending input to a server.
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XML Sitemap Generator
Generate a valid basic XML sitemap from a list of public URLs and download the result. Useful for sites and automated publishing workflows.
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AI Prompt Token Estimator
Get a rough token estimate, character count and approximate context usage for a prompt or other text.
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UTM Campaign URL Builder
Build campaign tracking URLs with source, medium and campaign parameters for marketing measurement.
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Meeting Cost Calculator
Estimate the salary-equivalent cost of recurring meetings and find time-saving opportunities in project delivery.
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API Request Builder (cURL & Fetch)
Generate copy-ready cURL and JavaScript fetch examples for an HTTP API request without sending it anywhere.
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JSON Difference Checker
Compare two JSON documents and identify added, removed and changed values at precise paths.
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JSON to TypeScript Types
Turn a JSON sample into readable TypeScript types for web apps, APIs and agent integrations.
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JSON Schema Validator (Essentials)
Check JSON against a lightweight schema: types, properties, required fields, values and common limits.
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JWT Inspector & Decoder
Read JWT header, payload and expiry locally. No signatures are validated and no data is sent away.
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Base64 Text Encoder & Decoder
Encode Unicode text into Base64 or decode Base64 back to readable UTF-8 text.
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CSV Data Profiler
Paste CSV data to inspect headers, row counts, missing values and numeric statistics.
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Text Difference Checker
Compare two passages or configuration files line by line to identify inserted, deleted and unchanged lines.
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HTTP Status Code Lookup
Quickly look up common HTTP response codes and what they mean for websites and API clients.
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Break-even & Profit Calculator
Estimate how many sales your business needs to cover fixed costs, variable costs and targeted profit.
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Global Meeting Time Planner
Compare working hours in London, Singapore, New York and Sydney to find practical remote-team meeting slots.
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JSON, CSV, machine-readable schema, sitemaps and URL transforms can help people review the information moving between systems. These tools are browser-based utilities; they do not promise unattended agent API access.
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