JSON Formatter
Validate, format, and beautify JSON with syntax highlighting and instant error feedback.
Powerful free tools for developers, marketers, and creators. No signup. No limits.
41 tools found
Validate, format, and beautify JSON with syntax highlighting and instant error feedback.
Generate secure UUID v4 values one at a time or in bulk for apps, APIs, and databases.
Generate page title, meta description, Open Graph, and Twitter Card tags with live previews.
Convert colors between HEX, RGB, HSL, and CMYK with live preview, contrast checks, and harmony swatches.
Count words, characters, reading time, and repeated phrases while you write or paste content.
Generate clean SEO-friendly slugs with separator, stop-word, number, and length controls.
Analyze H1 to H6 heading structure from a URL or pasted HTML and catch missing H1s, skipped levels, and duplicates.
Measure keyword frequency, density, and repeated phrases from live URLs or pasted content with one-word to three-word analysis.
Preview title, description, and URL snippets exactly how they may appear in Google search results on desktop and mobile.
Crawl pages or add URLs manually to generate a clean sitemap.xml file with changefreq, priority, and last modified controls.
Generate JSON-LD structured data for business, product, article, FAQ, recipe, and more common schema types.
Generate Open Graph tags with Facebook and LinkedIn previews so shared links look polished everywhere.
Create Twitter Card tags with live summary and large-image previews before publishing your page.
Generate an OOP WordPress plugin starter with file tree preview, feature toggles, and ZIP export.
Test WordPress REST API endpoints with params, auth, JSON bodies, and formatted live responses.
Build WordPress shortcodes visually with custom attributes, presets, and PHP output.
Search, filter, and copy curated WordPress snippets for security, SEO, admin, performance, and debugging.
Generate a secure wp-config.php file with salts, debug flags, memory limits, and hardening options.
Generate a full favicon pack from one source image with PNG exports, manifest data, and head tags.
Render custom HTML snippets into downloadable PNG or JPEG images with live previews and scale controls.
Compress PNG, JPG, and WebP images locally with format switching, quality presets, and before/after comparison.
Crop images visually with drag handles, ratio presets, manual values, and local browser export.
Resize images to exact dimensions with aspect-ratio lock, presets, scaling, and format export.
Convert PNG images to WebP with quality controls, lossless mode, and side-by-side preview.
Optimize SVG markup by removing comments, metadata, editor attributes, and redundant whitespace.
Convert WebP images into PNG, JPEG, or fresh WebP output for compatibility and editing workflows.
Encode plain text to Base64 or decode Base64 strings back into readable text instantly.
Create crawler rules visually and generate a clean robots.txt file for your website.
Encode URLs safely, decode encoded strings, and compare full URL encoding with component encoding.
Beautify messy HTML and output readable, properly indented markup with copy and download actions.
Extract title, description, canonical, Open Graph, Twitter Card, and structured data tags from any page URL or pasted HTML.
Minify CSS by stripping comments, whitespace, and redundant characters for lighter production stylesheets.
Reduce JavaScript size by stripping comments, tightening whitespace, and cleaning quick utility scripts.
Simulate redirect chains, spot loops, and inspect each HTTP status-code hop before pushing redirect rules live.
Fetch or paste robots.txt rules, test a URL against any crawler, and see the exact matching directive.
Build rewrite rules for CPTs, taxonomies, redirects, and custom regex patterns.
Create Apache, Nginx, and PHP security header rules for WordPress sites.
Build Apache .htaccess rules for HTTPS, caching, hardening, XML-RPC blocking, and redirect workflows.
Inspect image file details, dimensions, color sampling, and available EXIF metadata locally.
Convert image files into Base64 strings, full data URIs, and copy-ready HTML or CSS snippets.
Capture website screenshots with multiple providers, viewport presets, and same-origin downloads.