Skip to content

Ace vs Highlight.js

Based on 1 and 28 real audits

View Ace details | View Highlight.js details
MetricAceHighlight.jsWinner
Performance1847Highlight.js
Accessibility9785Ace
Best Practices10090Ace
SEO8388Highlight.js
Security7163Ace
TTFB167ms234msAce
Composite7073Highlight.js
Performance
Ace
18
Highlight.js
47
Accessibility
Ace
97
Highlight.js
85
Security
Ace
71
Highlight.js
63
SEO
Ace
83
Highlight.js
88
Composite
Ace
70
Highlight.js
73

Ace outperforms Highlight.js in 4 of 7 categories, with a stronger composite score (70 vs 73). Highlight.js leads in performance, SEO, composite score.

When to choose Ace

Choose Ace when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Highlight.js

Choose Highlight.js when your primary concern is performance and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1 audited Ace sites and 28 audited Highlight.js sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, Ace or Highlight.js?
Based on real BeaverCheck audits, Highlight.js sites score higher on Lighthouse performance (47 vs 18 on average).
Which has better security, Ace or Highlight.js?
Ace sites score higher on security analysis (71 vs 63 on average).
Which has better accessibility, Ace or Highlight.js?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Ace (97 vs 85). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, Ace or Highlight.js?
Highlight.js sites score higher on Lighthouse SEO signals (88 vs 83 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), Ace or Highlight.js?
Ace sites show lower Time to First Byte (167 ms vs 234 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose Ace or Highlight.js for my website?
Both platforms have trade-offs. Highlight.js scores higher on overall composite score while Ace may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
Audit your own site

Send Feedback