Code Diff
Checker.
Compare API responses, config files, or raw code side-by-side using an IDE-grade visual diff engine that instantly isolates logical changes.
Frequently Asked Questions
More Free Tools
60 tools being built — all free, no signup, instant results.
AI Prompt Generator
Generate expert prompts for ChatGPT, Claude, Gemini & more using RISEN, STAR, Chain-of-Thought and 4 other frameworks.
Word Counter & Readability
Instant word count, character count, readability score, reading time, keyword density and AI grammar fixer.
Meta Description Generator
Generate SEO-optimised meta descriptions for any page. Character counter included. GPT-4o powered.
Email Subject Line Tester
Score your email subject lines for open rate potential, spam triggers and emotional power words.
Hashtag Generator
Generate targeted hashtags for Instagram, TikTok, LinkedIn, YouTube & X. AI-powered 3-tier mix: popular, growing and niche hashtags.
Blog Title Generator
Generate 10 click-worthy blog titles from any topic. SEO, listicles, how-tos, curiosity hooks and more. GPT-4o powered.
Password Generator
Cryptographically secure random passwords. Custom length, symbols, numbers. Runs entirely in your browser.
QR Code Generator
Generate QR codes for URLs, WiFi, email, phone and text. Free PNG & SVG download. No signup, no expiry, 100% private.
VAT Calculator
Add or remove VAT instantly for 40+ countries. UK, EU, UAE, Australia and more. Standard and reduced rates. Invoice calculator included.
Invoice Generator
Create professional invoices in seconds. Add line items, VAT, discounts and download as PDF. Free, no signup, no watermark.
JSON Formatter
Format, validate and beautify JSON instantly. Syntax highlighting, error detection with line numbers, minify mode. 100% private.
Paraphrasing Tool
Rewrite any text with AI. 6 modes: Standard, Fluency, Formal, Academic, Creative and Shorten. GPT-4o powered, no word limit, no signup.
Grammar Checker
Check and fix grammar, spelling and punctuation with AI. Get corrected text plus explanations for every fix. GPT-4o powered, no word limit.
Text Summarizer
Summarise any text with AI. 4 modes: paragraph, bullet points, key takeaways and executive summary. GPT-4o powered, no word limit, no signup.
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, PascalCase, kebab-case and more. 10 modes, instant, free.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text instantly. Paragraphs, sentences, words or list items. HTML output included. Free, no signup, unlimited.
Cover Letter Generator
Generate a professional AI cover letter in seconds. 4 tone modes: Professional, Enthusiastic, Concise and Creative. GPT-4o powered, unlimited, no signup.
Character Counter
Count characters, words, sentences and paragraphs in real time. Live progress bars for Twitter, Instagram, LinkedIn, YouTube, TikTok and SMS limits.
Business Name Generator
AI brand architect mode — generate premium names with GoDaddy & TM checks.
YouTube SEO Elite
Generate high-ranking tags & description hooks with AI.
Email Signature Generator
Create professional HTML email signatures for Gmail, Outlook & Apple Mail. 4 templates, custom colours, social links. Free, no signup.
CSS Gradient Generator
Create beautiful CSS gradients with a visual editor. Linear, radial and conic with 12+ curated presets. Copy CSS instantly.
Colour Contrast Checker
Check your colour combinations against WCAG guidelines for AA and AAA compliance.
Favicon Generator
Generate perfect favicons from text or emoji in all standard sizes including Apple Touch constraints.
Base64 Converter
Instantly encode text to Base64 or decode Base64 strings back to text securely in your browser.
UTM Builder
Generate tracking links for your campaigns to monitor traffic perfectly in Google Analytics.
Markdown Editor
Instantly render Markdown syntax into clean, standard HTML code with real-time visual previews.
Regex Tester
Test, build, and debug Regular Expressions with real-time semantic highlighting and exact indexing.
SQL Formatter
Beautify raw, minified database queries into perfectly indented, readable syntax.
Epoch Converter
Instantly translate Unix epoch integers into formatted dates across timezones.
Tip Calculator
Calculate tips and split bills instantly. Tipping customs for 20+ countries, service quality presets, and per-person amounts.