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Viewing articles tagged 'websitespeedperformance'

A Speed Improvement Plan What to do, in order.STEP ONE: MEASURERun a speed test on three pages. Note the page size and the... Bot Traffic and How It Slows Your Site Traffic that is not customers.WHAT IT ISAutomated requests: search engine crawlers, scrapers,... Browser Caching Storing files on the visitor's device.WHAT IT DOESTells the visitor's browser to keep files it... Choosing a Fast Theme The foundation.WHY IT MATTERSSome themes load enormous amounts of code on every page regardless... Choosing the Right Image Format Which format for what.JPEGPhotographs. Good compression, no transparency.The right choice for... Cleaning Up Your Database Removing accumulated waste.WHAT ACCUMULATESPost revisions, sometimes dozens per page Spam and... Compressing Images Reducing size without visible loss.WHAT COMPRESSION DOESRemoves data the eye does not notice.A... Enabling Compression Sending less data.WHAT IT DOESCompresses text files before sending: HTML, CSS, JavaScript.The... Handling Product Images in a Shop Images at volume.THE SCALE PROBLEMA shop with two hundred products has hundreds of... How to Measure Your Site Speed Getting a real picture.WHAT TO MEASUREHow long until something appears How long until the page is... Keeping Your Site Fast Over Time Preventing regression.WHAT MAKES A SITE SLOW AGAINImages uploaded without preparation Plugins... Lazy Loading Images Loading only what is needed.WHAT IT DOESImages below the visible area are not loaded until the... Managing Third-Party Scripts Code from other people's servers.WHAT COUNTSAnalytics Chat widgets Social media embeds... Minification and Combining Files Reducing requests and size.WHAT MINIFICATION DOESRemoves spaces, line breaks and comments from... Object Caching and Database Caching Advanced caching.WHAT IT DOESStores the results of database queries so they are not repeated.WHEN... Reducing the Number of Plugins Every addition costs something.THE PROBLEMEach plugin loads code, styles, scripts and database... Resizing Images Before Upload The first and most important step.THE PRINCIPLENever upload an image larger than it will be... Server Resources and Speed When you are hitting limits.WHAT LIMITS EXISTCPUMemory Entry processes, meaning simultaneous... Setting Realistic Speed Goals What to aim for.A REASONABLE TARGETContent visible within about two seconds on a decent... Setting Up Caching on WordPress Practical configuration.WHAT YOU NEEDA caching plugin. Several good ones exist, free and... Speed for Online Shops Specifically Where it costs money directly.WHY IT MATTERS MOREA slow homepage loses visitors. A slow checkout... Speed on Mobile and Slow Connections The measurement that matters most.WHY THIS IS THE REAL TESTMost visitors are on phones. Many are... Understanding Slow Database Queries When the database is the bottleneck.THE SYMPTOMPages slow even with caching, particularly for... Understanding Speed Test Results Reading the report.WHAT THE SCORE ISA summary. Useful for tracking change over time, not as a... Updating Your PHP Version Frequently the easiest gain available.WHY IT MATTERSNewer PHP versions are substantially faster... Using a CDN to Improve Speed Serving files from closer to visitors.WHAT IT DOESStores copies of your files on servers in many... Website Speed: Everything That Matters, Briefly The whole category in one page.THE THREE THINGS THAT PRODUCE MOST OF THE GAINImages: resize, then... What Caching Is and Why It Matters The second biggest gain.THE PROBLEM IT SOLVESWithout caching, every visit rebuilds the page:... When Caching Causes Problems Diagnosing cache issues.THE COMMON SYMPTOMSChanges you made do not appear A visitor sees someone... When to Get Help With Speed Knowing your limit.WHAT YOU CAN DO YOURSELFResize and compress images Enable caching Update PHP... Where Website Slowness Actually Comes From The real causes, ranked.IMAGESThe largest cause by a wide margin. Uncompressed photographs... Why Images Slow Your Site Down The main culprit.THE PROBLEMA photograph from a phone or camera is several megabytes and several... Why Website Speed Matters The commercial case.WHAT SLOW COSTS YOUVisitors who leave before the page loads Customers who...

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