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    Free Tools: Test, Measure, and Fix Your Site

    ROI Calculator

    See how much revenue your slow website is costing you. Enter your URL and monthly traffic to get a personalised speed-to-revenue impact report.

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    Speed Optimization Pricing Tool

    Get an instant estimate for your speed optimization project. Select your platform, site complexity, and scope to see a tailored investment range.

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    Image Compressor (JPG, PNG, WebP)

    Image Compressor (JPG, PNG, WebP)

    Drag-and-drop images and compress them losslessly or lossily right in your browser. Download smaller, faster-loading files in one click.

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    Resize Image

    Resize Image

    Resize JPG, PNG, or WebP images to exact dimensions. Lock aspect ratio, pick format and quality, download instantly.

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    WebP Converter

    WebP Converter

    Convert PNG and JPG to WebP for 25–35% smaller files at the same visual quality. Batch upload supported.

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    AVIF Converter

    AVIF Converter

    Convert PNG and JPG to AVIF for the smallest modern image format. 30–50% smaller than WebP at equivalent quality.

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    Favicon Generator

    Favicon Generator

    Generate favicons in every size browsers and devices need (16–512px) from a single upload, plus copy-paste HTML.

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    Base64 Encoder/Decoder

    Base64 Encoder/Decoder

    Encode or decode Base64 strings or files instantly in your browser. Swap between encode and decode in one click.

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    CSS Compressor (Minifier)

    CSS Compressor (Minifier)

    Strip whitespace, comments, and redundancy from CSS to reduce file size and speed up render-blocking requests.

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    JavaScript Compressor (Minifier)

    JavaScript Compressor (Minifier)

    Quick browser-side JS minification, strips comments and collapses safe whitespace while preserving strings and regex.

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    HTML Minifier

    HTML Minifier

    Shrink HTML by removing whitespace and comments. Preserves <pre>, <script>, <style>, and <textarea> contents.

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    JSON Formatter & Validator

    JSON Formatter & Validator

    Pretty-print, minify, and validate JSON. Catch syntax errors instantly with browser-side parsing.

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    Gzip / Brotli Compression Test

    Gzip / Brotli Compression Test

    Check whether a URL is served with Gzip or Brotli compression, and what content-encoding header was returned.

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    Caching Test / Cache Checker

    Caching Test / Cache Checker

    Inspect Cache-Control, ETag, Expires, and CDN cache headers for any URL to diagnose caching problems.

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    DNS Checker

    DNS Checker

    Look up A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records for any domain. Powered by Google Public DNS.

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    Lazy Load Code Generator

    Lazy Load Code Generator

    Generate copy-paste lazy-loading HTML for images, iframes, background images, and YouTube embeds to improve LCP.

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    SVG Optimizer

    SVG Optimizer

    Strip comments, metadata, editor cruft, and excess whitespace from SVG files. Round decimals to shrink file size.

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    HTTP / Cache Header Checker

    HTTP / Cache Header Checker

    Inspect every HTTP response header for any URL, Cache-Control, ETag, CDN cache status, security headers, and more.

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    Redirect Checker

    Redirect Checker

    Trace the full redirect chain for any URL. See every 301, 302, 307, and 308 hop until the final destination.

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    TTFB Test (Time to First Byte)

    TTFB Test (Time to First Byte)

    Measure how long the server takes to deliver the first byte. TTFB above 800ms hurts Core Web Vitals.

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    Critical CSS Generator

    Critical CSS Generator

    Extract above-the-fold CSS rules to inline in <head> and eliminate render-blocking stylesheets.

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    Page Size / Page Weight Checker

    Page Size / Page Weight Checker

    Measure total page weight and see how much each image, script, stylesheet, and font is adding.

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    Render-Blocking Resources Finder

    Render-Blocking Resources Finder

    Scan a page for render-blocking CSS and JavaScript that delay First Contentful Paint and LCP, with fixes.

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    Unused CSS Finder & Remover

    Unused CSS Finder & Remover

    Find CSS selectors that don't match any element in your HTML and download a leaner stylesheet.

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    MAKE YOUR SITE FAST

    Find out exactly what's slowing you down and how to fix it.

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