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Glossary of Terms

We have compiled this list of terms and definitions to help you better understand the terminology used within the web development community.

SEO Glossary

There are 10 entries in this glossary.
Search for glossary terms (regular expression allowed)

Canonical

The Canonical audit verifies the page includes a properly formed <link rel="canonical"> tag. This tag tells search engines the preferred URL for the current content, preventing duplicate-content penalties when the same page is reachable at multiple addresses.
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Synonyms - Rel Canonical, Canonical Tag, Canonical URL

Canonical Links

A Canonical Links tells search engines which version of a page is the main one when similar content exists at multiple URLs. This prevents duplicate content confusion and makes sure ranking signals are credited to the right page. It is one of the most important technical SEO tags to get right.
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Synonyms - Rel Canonical, Master Link

Compressed Images

Compressed Images have had unnecessary data stripped away to shrink file size without noticeably hurting visual quality. Smaller images load faster, use less bandwidth, and improve the overall experience for visitors, especially on mobile connections. Compression is one of the easiest performance wins.
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Synonyms - Optimized Images, WebP

Content Security Policy (XSS)

A Content Security Policy is a set of rules you give the browser that control which scripts, styles, and resources a page is allowed to load. It is one of the best defenses against cross-site scripting attacks. A strong policy makes security a built-in standard rather than an afterthought.
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Synonyms - CSP, XSS Protection

Crawl Budget

Crawl Budget is the number of pages a search engine bot will crawl on your site within a given time period. If your site is large or has many low-quality pages, the bot may run out of budget before reaching your most important content. Keeping your site lean and well-structured helps maximize coverage.
Hits - 239
Synonyms - Crawling Limit, Bot Access

Crawlable Anchors

Crawlable Anchors are links built in a way that search engines can actually find and follow them. If links rely entirely on JavaScript or are hidden behind unusual code patterns, crawlers may never discover the pages they point to. Clean, standard link markup keeps your content visible to search engines.
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Synonyms - Crawlable Links, Bot-Friendly Links

Critical Request Chains

Critical Request Chains are sequences of network requests that depend on each other before key content can appear on screen. The longer the chain, the longer users wait. Shortening these dependency chains is one of the most effective ways to speed up how fast a page feels.
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Synonyms - Render Chain, Dependency Chain

Cumulative Layout Shift

Cumulative Layout Shift is a Core Web Vital that measures how much visible content jumps around while a page loads. A common example is text shifting down when an ad suddenly appears above it. Low CLS scores mean a more stable, less frustrating experience for users.
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Synonyms - CLS, Visual Stability

Custom Controls Labeled

Custom Controls Labeled means any interactive element you build from scratch has a clear name that assistive tools can announce. Without proper labels, screen reader users encounter mystery buttons and controls. Good labeling makes even complex custom interfaces understandable for everyone.
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Synonyms - Widget Labels, Custom Button Names

Custom Controls Roles

Custom Controls Roles means any non-standard interactive element correctly identifies what it is to assistive tools. If a custom dropdown does not declare itself as a listbox, screen readers cannot convey its purpose. Assigning the right role keeps custom widgets usable for all visitors.
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Synonyms - Widget Roles, Custom Element Roles

What Does "Liquid Purple" mean?

noun | / LIK-wid PUR-pul /

  1. (biochemistry) Also known as visual purple or rhodopsin — a light-sensitive receptor protein found in the rods of the retina. It enables vision in dim light by transforming invisible darkness into visible form. Derived from the Greek rhódon (rose) and ópsis (sight), its name reflects its delicate pink hue and vital role in perception.

  2. (modern usage) Liquid Purple — a digital marketing agency specializing in uncovering unseen opportunities and illuminating brands hidden in the digital dark. Much like its biological namesake, Liquid Purple transforms faint signals into clear visibility — revealing what others overlook and bringing businesses into the light.

Origin: From the scientific term rhodopsin, discovered by Franz Christian Boll in 1876; adopted metaphorically by a marketing firm dedicated to visual clarity in the age of algorithms.

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Rooted in Southern California, Serving the World.
For over 20 years, Liquid Purple has been headquartered in the heart of Southern California, serving clients across Irvine, Newport Beach, Anaheim, and the greater Los Angeles area. While we are proud of our local roots, our digital reach extends far beyond our local area. We support businesses in major hubs like Denver, Dallas, New York, and Miami, as well as international clients. Our ability to operate across time zones means you can often wake up to completed tasks and progress updates—keeping your business moving while you sleep.