Home › Developer Tools

Developer Tools

JSON formatters, JWT decoders, regex testers, minifiers, encoders, and code utilities.

All developer tools

1. .env File Validator & Linter — Audit environment variable .env files for syntax errors, unquoted values, and duplicate keys.
2. .env to JSON Converter — Parse environment key=value lines into a JSON object.
3. Base64 Encoder / Decoder — Encode and decode plain text or binary files into Base64 format.
4. Bearer Token Extractor — Extract and decode bearer token strings from HTTP auth headers.
5. Code to Beautiful Image Generator — Generate gorgeous screenshot cards of code snippets with syntax themes and shadows.
6. Cookie Header Parser — Parse HTTP Cookie headers into individual cookie key-value pairs.
7. Cron Expression Explainer — Describe cron schedule expressions in plain human English.
8. Cron Job Expression Parser — Parse cron schedule strings into human-readable English descriptions.
9. Cron Schedule Timeline Forecaster — Inspect cron schedules and forecast the next 10 exact execution timestamps.
10. Cryptographic Hash Generator — Calculate SHA-256, SHA-512, SHA-1, and MD5 hashes for text and files.
11. CSS Keyframe Animation Generator — Design, customize, and preview pure CSS @keyframes animations with instant code generation.
12. CSS Minifier & Beautifier — Minify CSS stylesheets to reduce bandwidth or format messy code.
13. CSS to SCSS Clean Formatter — Structure CSS blocks into nested SCSS format.
14. cURL to Fetch (JavaScript) Converter — Convert cURL terminal commands into browser fetch() requests.
15. cURL to JavaScript fetch() Converter — Convert cURL command line requests into modern JavaScript fetch(), Axios, or Python requests code.
16. cURL to Python (Requests) Converter — Convert cURL commands into Python requests code.
17. decodeURIComponent Tool — Decode URL-encoded parameters and characters.
18. Docker Compose YAML Validator & Linter — Validate your docker-compose.yml file, check service definitions, and inspect security best practices.
19. Dockerfile Syntax Inspector — Validate Dockerfile directives (FROM, RUN, CMD, COPY, EXPOSE).
20. encodeURIComponent Tool — Strictly encode URI components for query strings.
21. File & Text Hash Verifier — Compare and verify file or text integrity against expected SHA-256, SHA-512, and SHA-1 checksums.
22. Git Command Cheatsheet & Builder — Search common Git workflows (rebase, stash, cherry-pick, reset).
23. GitHub Repo Search — Search GitHub repositories.
24. GraphQL Query Formatter — Format and indent GraphQL queries, mutations, and schemas.
25. HTML Characters Escape Tool — Escape &, <, >, ", and single quotes into HTML entities.
26. HTML Entities Encoder — Encode special characters into HTML entities or decode entities to text.
27. HTML Entities Unescape Tool — Decode HTML entities back into standard characters.
28. HTML Tag Stripper & Cleaner — Strip all HTML and XML tags from markup to extract text.
29. HTML to Markdown Converter — Cleanly convert raw HTML or copied rich web content into lightweight Markdown format.
30. HTML5 Boilerplate Generator — Generate clean starter HTML5 templates with viewport tags.
31. HTTP Basic Auth Header Generator — Generate Base64 Authorization: Basic headers from user/pass.
32. HTTP Header Parser & Security Auditor — Parse raw HTTP headers and evaluate server security posture (CSP, HSTS, X-Frame).
33. HTTP Headers Formatter & Inspector — Format and check standard HTTP request and response headers.
34. HTTP Status Codes Encyclopedia — Search and inspect HTTP response status codes with RFC details.
35. IPv4 Subnet / CIDR Calculator — Calculate network address, broadcast, usable host range, and netmask from CIDR.
36. JavaScript & HTML Code Bundler Minifier — Strip comments, compress whitespace, and reduce JavaScript and HTML payload size.
37. JavaScript Object to JSON — Convert loose JS object literals to strict JSON.
38. JSON Formatter & Validator — Beautify, validate, minify, and inspect JSON payloads with line numbers.
39. JSON Schema Validator — Validate JSON documents against JSON Schema (Draft 7/2020) with inline error diagnostics.
40. JSON String Escaper — Escape quotes and special characters for embedding in JSON strings.
41. JSON String Unescaper — Unescape JSON string literals into raw formatting.
42. JSON to .env Converter — Convert a JSON key-value config into standard .env lines.
43. JSON to JSON Schema Generator — Generate JSON Schema draft definitions from example payloads.
44. JSON to TypeScript Converter — Instantly infer TypeScript interfaces, nested models, and type aliases from JSON data.
45. JSON Validator & Syntax Inspector — Inspect and validate JSON payloads with line-accurate errors.
46. JWT Payload Formatter & Inspector — Inspect claims, issuer, subject, and expiration of JWT tokens.
47. JWT Token Decoder — Decode JSON Web Tokens and inspect header, payload, and expiration claims.
48. Linux chmod Permissions Calculator — Interactive Linux file permissions matrix with octal, symbolic, and CLI commands.
49. Markdown Link & Image Extractor — Extract all hyperlinked URLs and image references from Markdown.
50. Markdown Table Generator — Generate custom Markdown tables with configurable rows & columns.
51. Markdown to HTML Converter — Convert GitHub-flavored Markdown text to clean HTML with live preview and code export.
52. Meta Viewport Tag Generator — Generate mobile-responsive viewport meta tags.
53. NPM Package Search — Search npm packages.
54. Regex Syntax Cheatsheet — Quick reference for regular expression patterns and flags.
55. Regex Tester & Debugger — Test regular expressions with real-time match highlighting and capture groups.
56. Robots.txt Syntax Tester — Check robots.txt syntax rules and user-agent disallows.
57. Semantic JSON Diff Checker — Compare two JSON payloads side-by-side to highlight added keys, deleted attributes, and modified values.
58. Semantic Versioning (SemVer) Parser — Parse major, minor, patch and pre-release versions.
59. SQL Query Beautifier & Formatter — Format, indent, and uppercase keywords in SQL queries for PostgreSQL, MySQL, and BigQuery.
60. SQL Query Formatter & Beautifier — Format, indent, and uppercase SQL keywords for readability.
61. SQL Query Minifier — Strip comments and compress whitespace from SQL queries.
62. SQL to MongoDB Query Converter — Translate standard SQL SELECT, INSERT, UPDATE, and DELETE queries into MongoDB syntax.
63. Subresource Integrity (SRI) Generator — Generate sha384 and sha512 integrity hashes for script tags.
64. URL & URI Encoder / Decoder — Safely encode or decode query parameters, special characters, and percent-encoded URIs.
65. User Agent Parser & Inspector — Detect browser, operating system, rendering engine, and device type from user-agent strings.
66. User-Agent String Parser — Parse User-Agent strings into browser, OS, and engine info.
67. WCAG Color Contrast Checker — Calculate contrast ratio between text and background colors.
68. XML Formatter & Validator — Indent, beautify, validate, and minify XML documents.
69. YAML ↔ JSON Converter — Convert configuration files between YAML and JSON syntax cleanly.
70. YAML Syntax Validator — Check YAML files for indentation and syntax errors in-browser.

Browse other categories