The accessibility widget your page speed won't notice

Five accessibility widgets measured with Lighthouse, four on one shared test page and accessiBe on live sites. Inclusify added no blocking time.

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Tested 24 September 2026

How much does Inclusify slow down your page?

It doesn't hold it up. On a realistic mobile connection Inclusify added no blocking time and no long tasks, and did less main-thread work than any other widget we tested. It downloads 46.5 KB before a visitor opens it, and nothing more when they do.

0 ms
added blocking time
0
long tasks from the widget
+74 ms
main-thread work, the least tested
46.5 KB
up front, nothing more on open

Mobile, realistic throttling, median of 3 runs.

Next to four other widgets

Four widgets on one page, accessiBe on live sites. Shorter is lighter.

Added blocking timeMobile, Lighthouse default, median of 7 runs

Inclusify0 ms
UserWay0 ms
EqualWeb0 ms
AudioEye+42 ms
accessiBelive sites+151 ms

Added main-thread workMobile, Lighthouse default, median of 7 runs

Inclusify+109 ms
EqualWeb+134 ms
UserWay+163 ms
accessiBelive sites+547 ms
AudioEye+1098 ms

Downloaded before a visitor opens itMobile, cold cache

EqualWeb25.9 KB
Inclusify46.5 KB
UserWay72.3 KB
accessiBelive site234.6 KB
AudioEye297.9 KB

Downloaded when the panel opensMobile, after clicking the widget

Inclusify0 KB
UserWay44.1 KB
AudioEye106.5 KB
accessiBelive site127.7 KB

Why it stays light

It waits for your page
The main script loads after your page has finished loading, so it never competes with your own images and scripts.
The panel is built on first open
Until a visitor asks for it, only the button exists. Opening the panel downloads nothing more.
Only your language
A site gets its own language in the bundle. Every other language loads only if a visitor switches.
Minified and compressed
46.5 KB on the wire, from one host, in 2 requests.

How we measured

Every figure we measured

All profiles and all metrics, including the ones where another widget comes out ahead.

Mobile, realistic throttling, median of 3 runs

Inclusify
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+74 ms
Download
46.6 KB
Requests
2
LCP
+6 ms
FCP
-16 ms
Speed Index
+16 ms
CLS
0
Score
0
UserWay
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+213 ms
Download
72.3 KB
Requests
9
LCP
+1 ms
FCP
+2 ms
Speed Index
+34 ms
CLS
0
Score
0
AudioEye
Blocking time
+99 ms
Long tasks
199 ms
Main-thread work
+1406 ms
Download
298.1 KB
Requests
12
LCP
-3 ms
FCP
+1 ms
Speed Index
+55 ms
CLS
0
Score
-1
EqualWeb
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+164 ms
Download
25.9 KB
Requests
8
LCP
-2 ms
FCP
+7 ms
Speed Index
+66 ms
CLS
0
Score
0

Widget	Blocking time	Long tasks	Main-thread work	Download	Requests	LCP	FCP	Speed Index	Score
Inclusify	0 ms	0 ms	+74 ms	46.6 KB	2	+6 ms	-16 ms	+16 ms	0
UserWay	0 ms	0 ms	+213 ms	72.3 KB	9	+1 ms	+2 ms	+34 ms	0
AudioEye	+99 ms	199 ms	+1406 ms	298.1 KB	12	-3 ms	+1 ms	+55 ms	-1
EqualWeb	0 ms	0 ms	+164 ms	25.9 KB	8	-2 ms	+7 ms	+66 ms	0

Mobile, Lighthouse default, median of 7 runs

Inclusify
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+109 ms
Download
46.5 KB
Requests
2
LCP
+2 ms
FCP
0 ms
Speed Index
0 ms
CLS
0
Score
0
UserWay
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+163 ms
Download
71.9 KB
Requests
8
LCP
-74 ms
FCP
-1 ms
Speed Index
-1 ms
CLS
0
Score
0
AudioEye
Blocking time
+42 ms
Long tasks
184 ms
Main-thread work
+1098 ms
Download
298.0 KB
Requests
12
LCP
-73 ms
FCP
-1 ms
Speed Index
+1117 ms
CLS
0
Score
0
EqualWeb
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+134 ms
Download
25.9 KB
Requests
8
LCP
-74 ms
FCP
-1 ms
Speed Index
-1 ms
CLS
0
Score
0

Widget	Blocking time	Long tasks	Main-thread work	Download	Requests	LCP	FCP	Speed Index
Inclusify	0 ms	0 ms	+109 ms	46.5 KB	2	+2 ms	0 ms	0 ms
UserWay	0 ms	0 ms	+163 ms	71.9 KB	8	-74 ms	-1 ms	-1 ms
AudioEye	+42 ms	184 ms	+1098 ms	298.0 KB	12	-73 ms	-1 ms	+1117 ms
EqualWeb	0 ms	0 ms	+134 ms	25.9 KB	8	-74 ms	-1 ms	-1 ms

One of the 7 default-mobile runs had an Inclusify long task (122 ms); the median is 0 ms.

Desktop, median of 5 runs

Inclusify
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+69 ms
Download
46.5 KB
Requests
2
LCP
+16 ms
FCP
+5 ms
Speed Index
+5 ms
CLS
0
Score
0
UserWay
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+40 ms
Download
71.9 KB
Requests
8
LCP
+10 ms
FCP
0 ms
Speed Index
0 ms
CLS
0
Score
0
AudioEye
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+363 ms
Download
297.9 KB
Requests
12
LCP
-8 ms
FCP
+1 ms
Speed Index
+254 ms
CLS
0
Score
0
EqualWeb
Blocking time
0 ms
Long tasks
0 ms
Main-thread work
+68 ms
Download
25.8 KB
Requests
8
LCP
-7 ms
FCP
+3 ms
Speed Index
+3 ms
CLS
0
Score
0

Widget	Main-thread work	Download	Requests	LCP	FCP	Speed Index
Inclusify	+69 ms	46.5 KB	2	+16 ms	+5 ms	+5 ms
UserWay	+40 ms	71.9 KB	8	+10 ms	0 ms	0 ms
AudioEye	+363 ms	297.9 KB	12	-8 ms	+1 ms	+254 ms
EqualWeb	+68 ms	25.8 KB	8	-7 ms	+3 ms	+3 ms

accessiBe on three live sites, with it against without it, median over sites

Added blocking time
Mobile
+151 ms
Desktop
+6 ms
Widget long tasks
Mobile
217 ms
Desktop
54 ms
Added main-thread work
Mobile
+547 ms
Desktop
+84 ms
Downloaded up front
Mobile
234.7 KB
Desktop
234.6 KB
Requests up front
Mobile
2
Desktop
2
Largest Contentful Paint change
Mobile
+19 ms
Desktop
+150 ms
First Contentful Paint change
Mobile
+28 ms
Desktop
+57 ms
Speed Index change
Mobile
+843 ms
Desktop
+25 ms
Layout shift change
Mobile
0
Desktop
0
Lighthouse score change
Mobile
-3
Desktop
-3

Measure	Mobile	Desktop
Added blocking time	+151 ms	+6 ms
Widget long tasks	217 ms	54 ms
Added main-thread work	+547 ms	+84 ms
Downloaded up front	234.7 KB	234.6 KB
Requests up front	2	2
Largest Contentful Paint change	+19 ms	+150 ms
First Contentful Paint change	+28 ms	+57 ms
Speed Index change	+843 ms	+25 ms
Layout shift change	0	0
Lighthouse score change	-3	-3

Before and after a visitor opens the widget, mobile

Inclusify
Requests up front
2
Downloaded up front
46.5 KB
Requests on open
0
Downloaded on open
0 KB
accessiBe (live site)
Requests up front
2
Downloaded up front
234.6 KB
Requests on open
3
Downloaded on open
127.7 KB
UserWay
Requests up front
9
Downloaded up front
72.3 KB
Requests on open
8
Downloaded on open
44.1 KB
AudioEye
Requests up front
12
Downloaded up front
297.9 KB
Requests on open
2
Downloaded on open
106.5 KB
EqualWeb (panel did not open)
Requests up front
8
Downloaded up front
25.9 KB
Requests on open
4
Downloaded on open
6.8 KB

Widget	Requests up front	Downloaded up front	Requests on open	Downloaded on open
Inclusify	2	46.5 KB	0	0 KB
accessiBe (live site)	2	234.6 KB	3	127.7 KB
UserWay	9	72.3 KB	8	44.1 KB
AudioEye	12	297.9 KB	2	106.5 KB
EqualWeb (panel did not open)	8	25.9 KB	4	6.8 KB

Page speed changes are the difference from the same page with no widget. Paint timings on live sites move by hundreds of milliseconds from run to run.

Questions about the benchmark.

No. A widget runs in one visitor's browser and changes nothing your site sends, whichever widget it is and however fast it loads. This benchmark measures what a widget costs your page speed, not what it does for accessibility. Barriers are fixed in your markup, and a scan tells you where they are.

Our scope and limitations page says what our own widget and scanner do not do.

Because it would not render on the test page: it downloads and runs its script, then never fetches its site configuration away from a licensed domain. So it was measured on three live sites running it, each loaded as-is and with accessiBe blocked. The method differs from the other four, so compare its figures directionally.

Yes. The test page, every snippet, the scripts that ran Lighthouse and the raw results of every run are kept, and we send them on request: write to support@inclusifyapp.com. The method on this page lists the tool versions and settings, so the run can also be repeated from scratch.

Yes, because every vendor ships new versions of its script, and so do we. These figures are the scripts served on 24 September 2026, and the date is on the page for that reason. We run the benchmark again when our own widget changes in a way that could move its figures, and update this page with the new run.

Raw results and the harness: support@inclusifyapp.com. What a widget can and cannot do: Scope and limitations.

Compared feature by feature: Inclusify vs accessiBe, Inclusify vs UserWay, Inclusify vs AudioEye, Inclusify vs EqualWeb.

Make your website accessible today.

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The accessibility widget your page speed won't notice

How much does Inclusify slow down your page?

Next to four other widgets

Why it stays light

It waits for your page

The panel is built on first open

Only your language

Minified and compressed

How we measured

Every figure we measured

Questions about the benchmark.

Does a faster accessibility widget make my site accessible?

Why was accessiBe measured differently?

Can I check these numbers myself?

Will these results change?

Make your website accessible today.