Free Tools for Developers & SEO

Fast • Free • No sign-up required

Tip: type json, base64, or uuid.
Browse all tools
Popular tools
Browse all tools →
View all
Developer Tools
35 tools
SEO Tools
2 tools
Text Tools
0 tools
Utilities
0 tools

🔥 Popular tools

Hand-picked tools people use the most.
Browse all tools
Regex Cheatsheet & Visualizer

Quick regex reference and simple visual breakdowns.

Use now
JSON Patch Generator

Generate RFC6902 JSON Patch from two JSON documents.

Use now
Gitignore Generator

Generate .gitignore templates for common stacks.

Use now
HTTP Header Builder / Parser

Build and parse HTTP headers for requests and responses.

Use now
Robots.txt / Sitemap Validator

Validate robots.txt rules and sitemap XML structure.

Use now
URL Redirect Checker

Check final destination URLs and redirect status.

Use now
UUIDv7 / ULID Generator

Generate time-ordered UUIDv7 and ULID identifiers.

Use now
API Key / Secret Generator

Generate secure API keys and secrets instantly.

Use now
Meta Tag Generator

Generate SEO, Open Graph, and Twitter meta tags.

Use now
Random Data Generator

Generate random names, emails, and IDs.

Use now
HTTP Status Code Lookup

Look up HTTP status codes and meanings.

Use now
YAML ↔ JSON Converter

Convert YAML to JSON and JSON to YAML.

Use now
SQL Formatter

Format SQL queries for better readability.

Use now
JSON Schema Validator

Validate JSON data against a JSON Schema.

Use now
Text Diff Checker

Compare two texts and highlight differences.

Use now
Base64 Image Encoder / Decoder

Encode images to Base64 and decode Base64 to preview.

Use now
XML Formatter

Format XML for readability and quick debugging.

Use now
Cron Expression Helper

Explain cron expressions and generate common schedules.

Use now
Color Picker & Converter

Convert HEX, RGB, and HSL color values instantly.

Use now
JSON ↔ CSV Converter

Convert JSON arrays to CSV and back instantly.

Use now
Markdown Previewer

Preview Markdown and copy the generated HTML.

Use now
CSS Minifier / Formatter

Minify or format CSS for production and readability.

Use now
Lorem Ipsum Generator

Generate placeholder text for layouts and mockups.

Use now
URL Query Builder / Parser

Parse query strings and rebuild URLs quickly.

Use now
Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

Use now
JWT Decoder / Verifier

Decode JWT header and payload, and verify HS256 signatures.

Use now
Regex Tester

Test regular expressions with live matches and highlighting.

Use now
Text Case Converter

Convert text to upper, lower, title, or sentence case.

Use now
HTML Escape / Unescape

Escape or unescape HTML entities instantly.

Use now
URL Encode / Decode

Encode or decode URL strings instantly.

Use now
Timestamp Converter

Convert Unix timestamps to readable dates and back.

Use now
Password Strength Checker

Check password strength with instant feedback.

Use now
UUID Generator

Generate UUID v4 instantly.

Use now
Base64 Encode / Decode

Encode or decode Base64 strings in one click.

Use now
JSON Formatter

Format and validate JSON in your browser.

Use now
Canonical URL Checker

Detect rel=canonical tags in HTML and validate the URL.

Use now
Title & Meta Description Generator

Draft SEO titles and meta descriptions with length hints and SERP preview.

Use now
Want a new tool added? Send suggestions to your team and we can add it quickly.