Dev Tools
Free online developer tools to compare files, download public front-end source, build cron expressions, test regex, visualize algorithms, analyze JSON paths, and debug data easily.
Online Clipboard
Paste up to 2 million characters, generate a short ID, and retrieve it for 30 minutes.
JSON Diff
Compare two JSON files and highlight differences instantly for debugging and analysis.
File Diff
Compare files line by line to quickly identify differences and changes.
Website Source Downloader
Download accessible public front-end files into a ZIP with index.html, CSS, JS, images and fonts.
Regex Tester
Test JavaScript regular expressions with live matches, flags, groups, and highlighting.
JSONPath Tester
Test JSONPath expressions against JSON data with live results, paths, and filters.
XPath Tester
Evaluate XPath expressions against XML with namespaces, node types, and scalar results.
Cron Expression Generator
Build Quartz cron expressions with seconds, days, months, weekdays, years, and readable summaries.
Sorting Visualiser
Watch sorting algorithms animate with comparisons, swaps, steps, speed control, and generated arrays.
Responsive Website Tester
Preview a website across desktop, tablet, mobile and custom viewport sizes with rotation and zoom controls.
Searching Visualiser
Watch linear, sentinel linear, binary, meta binary, ternary, jump, interpolation, exponential, Fibonacci and best first search animate with probes, ranges and frontiers.