UD5 Toolkit
JSON Deep Diff Checker - Online Compare & Highlight Changes
Compare two JSON objects and see added, removed, or changed keys. Visual tree view with color highlighting. Handles nested structures. Local processing.
Tag: Compare Tool - Text & File Diff
15+ toolsJavaScript Object Diff Viewer - Online Compare Data
Paste two JSON objects and see a highlighted diff showing what was added, removed, or changed. For API testing.
URL Canonicalizer - Online Normalize & Compare
Enter two URLs and see if they resolve to the same canonical form after normalization. Find duplicate content issues.
Markdown Diff Viewer - Online Compare & Highlight Markdown
Paste two Markdown texts and see a side‑by‑side diff with rendered preview. Perfect for editing and collaboration.
Visual Image Diff Slider - Online Compare Two Photos
Drag a slider over two images to see the differences instantly. Perfect for showcasing retouches or compression effects.
HTML Minifier Comparison - Online See Savings Live
Paste HTML and see a before/after comparison of minified output. Check the byte savings. All local.
Image vs. SVG Weight Comparator - Online Byte‑for‑Byte
Paste a raster image and an SVG, see the file size and rendering time. Understand when to use vector. Local.
Image Compression Comparator - Online JPEG vs WebP Preview
Compare original and compressed image side‑by‑side with a slider. Choose format and quality level. Local processing.
CSS Specificity Battle - Online Fight Two Selectors
Enter two CSS selectors and see which one would win in a specificity battle. Visual score breakdown.
Image Difference Checker - Online Visual Compare
Upload two images and see a diff overlay highlighting the pixel differences. Adjust tolerance. For regression testing.
Unit Price Calculator - Online Best Buy & Comparison Tool
Calculate the unit price of products to find the best deal. Compare multiple items at once. Perfect for grocery shopping and frugal living.
JSON Diff Compare - Online Highlight Differences
Paste two JSON objects and find the structural differences with side‑by‑side highlighted output. Indispensable for API debugging.
Text Diff to Image - Online Compare & Export as PNG
Paste two texts, compute the diff, and render the result as a highlighted image. Easier to share changes visually.
Paraphrase Comparison Tool - Online Spot the Rewrite
Paste two versions of the same idea and see a word‑level diff highlighting the rewrite. Not AI, just diff.
Text Diff Checker - Online Compare & Find Differences
Compare two text blocks and highlight differences line by line. Ideal for code review and document revisions. All diffs computed locally for privacy.