Campaign Funnel & Budget Forecaster
Forecast impressions, clicks, leads, sales and estimated contribution using three adjustable performance scenarios.
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No accounts · no fees
Free online tools
Practical browser-based utilities for marketing, AI safety, design, search, data and creative work. No subscriptions; useful results directly in your browser.
Advertising & marketingAI safety & responsible AIData & developmentImages & creativeSEO & developmentVideo & audio
New: AI Safety tools
I’ve started adding browser-based tools for responsible AI development. If that topic interests you, you may also want to see my book AI Safety — Humanity, Control, and the Race to Keep Superintelligence Aligned.
Advertising & marketing
Google Ads Text Length Checker
Check responsive search-ad headline and description character counts against common limits, with bulk paste support.
ROAS & Advertising Profit Calculator
Model return on ad spend, contribution margin, break-even ROAS, and estimated profit before overheads.
UTM Campaign URL Builder
Create campaign tracking links with safely encoded UTM parameters and copy or export the finished URLs.
AI safety & responsible AI
AI Incident Severity Triage Tool
Triage an AI-related incident by likely impact, exploitability, autonomy and data exposure, then export a clear severity summary.
AI Safety Risk Register Builder
Score an AI system across misuse, prompt-injection, data sensitivity and governance controls, then export a simple risk register.
Prompt Injection Review Checklist
Review an AI agent or assistant workflow against practical prompt-injection and tool-use safeguards, then export a readable checklist.
Data & development
CSV to JSON Converter & Data Preview
Convert quoted CSV records to JSON or JSON objects back to CSV, with delimiter selection, validation, and downloads.
JSON Formatter & Validator
Parse JSON, locate syntax errors, format or minify it, and download the transformed result without uploads.
Private Text Difference Checker
Compare two passages line-by-line and highlight removed, added and unchanged lines without uploading the text.
Images & creative
Image Resizer & Format Converter
Resize images proportionally and export PNG, JPEG, or WebP using a private in-browser canvas.
WCAG Colour Contrast Checker
Calculate foreground/background colour contrast, preview readable combinations, and check common WCAG text thresholds.
SEO & development
SERP Title & Description Preview
Preview a prospective search result snippet, inspect metadata lengths and draft a more readable title and meta description.
Video & audio
SRT Subtitle Timing & VTT Converter
Shift subtitles forward or backward, rescale timings and export valid SRT or WebVTT files for video editing.
About this collection
These tools aim to solve small, concrete problems. Many process data locally without a file upload. Some features require JavaScript or modern browser support; results should be checked before professional or critical use. The collection will expand selectively—quality matters more than sheer page count.
Want help interpreting the numbers or improving your digital marketing strategy? Explore my consulting offer, or email me directly at peter@peterwoodford.com.