Side-by-side and unified diff comparison for text, JSON, and code snippets.
Configures user during client-side online text & code diff comparator computation.
Configures original text during client-side online text & code diff comparator computation.
Configures modified text during client-side online text & code diff comparator computation.
Configures left title during client-side online text & code diff comparator computation.
Both inputs match 100% with zero differences detected under current whitespace and case settings.
Side-by-Side (Split) aligns original and modified files horizontally, perfect for reviewing visual structural changes, UI layouts, and config files. Unified view aggregates all changes into a linear timeline, matching Git patch and pull-request standards.
Unlike simple line-level comparison tools, ToolsAA performs a dual-pass evaluation: lines are matched first via Myers LCS, followed by sub-line tokenization to highlight the exact modified words or characters.
Verify that your user matches the expected configuration format. Load a built-in sample preset to compare structural formatting.
Check the original text setting in Online Text & Code Diff Comparator to ensure encoding, precision, or specification version matches your target runtime.
Drag and drop any PNG, JPG, WebP or SVG image to generate Base64 data URIs and CSS/HTML tags, or decode Base64 back to file.
Generate complete SEO meta tags, OpenGraph social sharing headers, and live Google/Twitter/Facebook search preview cards.
Quickly compute percentage differences, markups, discounts, margins, and sales tax with step-by-step calculation formulas.
Transform any article title or text into clean, URL-safe SEO slugs with lowercasing, stop-word removal, and transliteration.
Generate high-resolution PNG/SVG QR codes with custom foreground/background colors, dot patterns, corner squares, and center logos.
Calculate Body Mass Index (BMI) using metric (cm/kg) or imperial (ft/lbs) measurements with WHO classification ranges.