Popular Tools
The most frequently needed utilities on DuskTools. This page brings together high-priority tools for common developer tasks like JSON formatting, encoding conversion, request debugging, token inspection, text cleanup, and security checks.
Top Tools
Looking for the newest utilities instead? Visit Recently Added Tools for freshness signals and newly launched pages.
Use this hub when you want the shortest path to the tools that matter most. It complements Recent Tools for freshness and All Tools for completeness, giving search engines and users a clearer signal about which pages are most important.
JSON & Data Utilities
These are some of the highest-intent developer queries on the web. They cover formatting, validation, comparison, flattening, and converting payloads during everyday API and data work.
- JSON Formatter
Format, validate, and minify JSON payloads in one place.
- Diff Checker
Compare JSON or text side by side when you need a quick diff.
- JSON to CSV
Convert JSON arrays into CSV for spreadsheets.
- JSON to XML
Convert JSON objects into valid XML for integrations and feeds.
- JSON Flatten
Flatten nested JSON into dot notation paths.
- JSON Key Extractor
List every unique key in a JSON object tree.
Encoding & Conversion Tools
Evergreen encoding and text-conversion utilities with strong search demand from developers debugging payloads, URLs, entities, and binary-to-text workflows.
- Base64 Decode
Decode Base64 back into readable text.
- Base64 Encode
Encode plain text into Base64 with UTF-8 support.
- URL Encoder / Decoder
Encode or decode URL components and query strings.
- HTML Entity Decoder
Decode HTML entities into normal text quickly.
- Unicode Converter
Convert text to and from Unicode escape formats.
- ASCII Converter
Look up and convert ASCII characters and codes.
- Base64 Image Previewer
Preview image payloads stored as Base64 data.
Text Processing Tools
Simple text utilities tend to get searched over and over because they solve recurring cleanup problems in docs, exports, logs, and copied data.
- Remove Duplicate Lines
Deduplicate large text lists quickly.
- Sort Text
Alphabetize, reverse, or normalize text blocks.
- Word Counter
Count words, characters, and text length instantly.
- Case Converter
Switch between upper, lower, camel, snake, and title case.
- Diff Checker
Compare two text blocks and highlight differences.
- Email Extractor
Pull email addresses out of logs or copied text.
- CSV Delimiter Detector
Detect comma, tab, semicolon, or pipe separators.
Developer Workflow Tools
These are the utilities developers open repeatedly while shipping APIs, inspecting tokens, debugging requests, and generating identifiers.
- UUID Generator
Generate v4 UUIDs instantly in the browser.
- Epoch Converter
Convert epoch seconds, milliseconds, and microseconds.
- Timestamp Converter
Convert Unix timestamps and readable dates.
- JWT Decoder
Inspect JWT headers, payloads, and expiry data.
- Regex Tester
Test patterns against sample strings live.
- cURL Generator
Build and inspect copy-ready cURL commands.
- API Request Builder
Assemble and test request payloads visually.
Security & Network Debugging
Security, token, and network pages that are especially useful during auth debugging, redirect tracing, and production troubleshooting.
- Passphrase Generator
Generate memorable multi-word passphrases.
- Password Entropy Visualizer
Estimate strength and crack-time resistance.
- Redirect Checker
Follow redirect chains and inspect hop behavior.
- CORS Checker
Check response headers for cross-origin issues.
- HTTP Header Diff
Compare two sets of request or response headers.
- SSL Expiration Checker
Check certificate expiration dates and countdowns.
- DNS Lookup
Inspect DNS records through a clean browser UI.
- Hash Generator
Generate SHA-256, SHA-1, and MD5 hashes.
More Discovery Paths
Use these pages to find what you need quickly: popular picks for everyday tasks, recent additions for new utilities, full indexes when you want every link in one place, and category hubs when you are working in a specific area (JSON, HTTP, text, and more).