Free web tools.
A handful of genuinely useful, genuinely free tools — no sign-up, no catch. Check a website's health, estimate what a new site should cost, plan your business launch, add the checker to Chrome and score sites as you browse, or plug it straight into Claude and ChatGPT.
Website Health Checker for Chrome
The checker, built into your browser. Open any website, click the icon, and get both scores in one go — how well the site works for real visitors, and how visible it is to AI search like ChatGPT. Free, no sign-up.
Add to Chrome →Website Health Checker
Enter any website address and get an instant 0–100 health score, with a plain-English list of what's costing it customers — mobile-friendliness, speed, security, dated code and more.
Check a website →Website Cost Calculator
Pick the pages and features you need and get an honest, instant estimate of what a website should cost to build in the UK — shown next to the £49.99/month (+ £499.99 build) pay-monthly alternative.
Estimate your price →New Business Online Checklist
A free, tickable checklist for getting a new business online the right way — domain, email, website, Google Business Profile, reviews and everything in between.
Open the checklist → For developersWebsite Checker API & MCP Server
Call the website checker as a free REST API, or connect it as an MCP server so AI assistants like Claude, ChatGPT and Cursor can run health checks directly.
View the docs → NewWebsite Brief Builder
Answer guided questions and finish with a proper website brief you can send to any designer — including the AI-search and redirect requirements most templates miss. Saves as you go.
Build your brief → NewPerformance Budget Calculator
Set a target load time and connection speed to see how much page weight your site can afford — a concrete number to design against.
Calculate budget → NewColour Contrast Checker
Check any two colours against WCAG 2.2 accessibility standards — instantly see if your text passes AA and AAA. Runs in your browser.
Check contrast → Live dataEssex Website Health Index
One number for the county's small-business web health — recalculated every night from our rolling audits, with breakdowns by town and trade.
See the live index →Fittest Websites in Essex
The nightly leaderboard of local business websites that pass our full audit with zero faults. Positive recognition only — nobody can pay to appear.
See the leaderboard → Original researchEssex Website Report 2026
We audited 421 real small-business websites across Essex, Kent and East London. 79% had problems, 1 in 7 was broken. The full findings, free and open.
Read the report →More from Fisher.digital: Education Hub · FAQ · The Business plan (£499.99 + £49.99/month)