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LEARN STEM WITH SIGNS
Accessibility Statement
Indian Sign Language Enabled Virtual Laboratory (ISLEVL) — CSIR–Institute of Microbial Technology, Chandigarh
Our commitment
ISLEVL exists because scientific knowledge was not reaching learners who had been excluded from it. Accessibility is not a compliance obligation added to this platform — it is the reason the platform was built.
CSIR–Institute of Microbial Technology is committed to making islevl.org, the ISLEVL mobile application and everything we publish usable by the widest possible range of people: those who are Deaf or hard of hearing, blind or partially sighted, Deafblind, and those with physical, cognitive or learning disabilities.
We publish this statement, including our current shortcomings, because an honest account of where we stand is more useful to our users than an assurance we cannot yet substantiate.
Standards we work to
Web Content Accessibility Guidelines (WCAG) 2.1 — target conformance Level AA
Guidelines for Indian Government Websites (GIGW) 3.0, National Informatics Centre and Ministry of Electronics and Information Technology
IS 17802 (Parts 1 and 2) — Indian Standard on accessibility for ICT products and services
Rights of Persons with Disabilities Act, 2016 — Section 40 read with Rule 15
Universal Design for Learning principles
Conformance status
islevl.org is partially conformant with WCAG 2.1 Level AA.
"Partially conformant" means that some parts of this website do not yet fully conform to the standard. A structured review completed in July 2026 identified defects in the site's interface layer, and the Level A defects found in that review have since been corrected — see Fixed since our last review below. The remaining items are listed under Known limitations, each with a commitment date. Our target date for full WCAG 2.1 Level AA conformance is 31 March 2027.
We draw a deliberate distinction between two layers of this platform:
The content layer — the Indian Sign Language educational material itself — is, to our knowledge, without parallel in India and has been independently assessed and recognised internationally.
The interface layer — the website structure that delivers that content — has defects we are actively remediating.
We are not willing to describe the second as equivalent to the first.
What is accessible today
The following are in place and can be verified by any visitor.
For Deaf and hard-of-hearing users
All educational content is authored in Indian Sign Language, not subtitled afterwards. Deaf signers, editors and validators are employed members of the team, not consultees.
A digitally indexed ISL STEM Dictionary, from which 84 specialised scientific signs have been formally accepted into the national Indian Sign Language dictionary by ISLRTC.
Visual-first design throughout: signs, graphics, demonstrations, facial expression and visual sequencing, minimising dependence on audio.
For all users
Free and open access. No login, no subscription, no cost barrier, no registration wall.
Self-paced control. Content can be paused, replayed and revisited without dependence on a live interpreter's availability or scientific vocabulary.
Multiple formats for the same knowledge — video, comics, simulations, infographics, podcasts, quizzes and games — so users may choose the format that suits them.
Responsive layout adapting to desktop, tablet and mobile screens.
Offline access through AstroLabVM, which runs without an internet connection inside partner learning centres.
Secure delivery over HTTPS, with Unicode encoding so scientific and multilingual terminology renders correctly.
We rely on Section 52(1)(zb) of the Copyright Act, 1957, which permits conversion of works into accessible formats for persons with disabilities. Content created under our collaboration with the Haryana Welfare Society for Persons with Speech and Hearing Impairment is expressly released free of copyright restriction on this basis.
Fixed since our last review
The following defects were identified in our July 2026 review and have since been corrected:
Header images (social media links, award badges) now carry descriptive alternative text
Non-descriptive alternative text such as "Avatar" has been replaced with meaningful visible labels
Every page now has a single top-level heading, with no skipped heading levels
A "skip to main content" link is now available at the start of every page
The scrolling announcement banner can now be paused, both by a visible control and automatically on hover or keyboard focus
All announcement links now lead to a real destination
Pages now carry descriptive, unique titles
The contact email link now opens a mail client correctly
The footer notice recommending specific browsers and screen resolutions has been removed
Video embeds now carry a descriptive title attribute on their frame
The video dialog/pop-up element now has an accessible name
This is corroborated by independent automated testing on 2 August 2026: WAVE found 0 errors and 0 contrast errors on the homepage (AIM Score 9.8/10), and Google Lighthouse scored the homepage 93/100 on accessibility. We will re-run both after the two most recent fixes above and update this figure.
Known limitations
The following defects are known to us. Each is listed with the barrier it creates and the date by which we will have addressed it.
Being fixed by 30 September 2026
No text-resize or high-contrast controls in the interface
Privacy, terms of use, copyright and hyperlinking policies not yet published
Being addressed progressively to 31 December 2026
Captions and transcripts on video. As at 1 August 2026, 510 of 908 videos (56%) carry at least one verified, human-published caption track; the remaining 398 videos do not yet have verified captions. We are prioritising these for captioning, replacing any auto-generated-only tracks with verified ones, and publishing downloadable transcripts alongside each video.
Audio description for visual demonstrations where the visual content is not conveyed by the accompanying narration.
Not yet assessed
Automated testing (WAVE, Lighthouse) is complete as of 2 August 2026 — see Fixed since our last review above. We have not yet completed manual testing of keyboard focus visibility, behaviour at 200% zoom, or screen reader output with NVDA, JAWS, VoiceOver and TalkBack. This testing is scheduled for August 2026 and this statement will be updated with the results, including any further defects it reveals.
What we are doing about it
Complete — automated evaluation using Lighthouse and WAVE across the homepage, and remediation of every defect it found, including video frame titles and dialog naming.
August 2026 — complete manual keyboard and screen reader testing across representative content pages; publish results here.
September 2026 — add accessibility controls, sitemap, search and the required policy pages.
December 2026 — complete verified captions and transcripts across the video library.
March 2027 — target full WCAG 2.1 Level AA conformance, independently reviewed.
This statement will be updated at each milestone, whether or not the milestone is met on time.
How we test
Automated evaluation using Lighthouse, WAVE and axe — last run 2 August 2026
Manual keyboard-only testing of all primary journeys
Screen reader testing with NVDA, VoiceOver and TalkBack
Review by Deaf members of the ISLEVL team, who are employed as content creators, editors and validators. Accessibility decisions on this platform are made with disabled colleagues in the room, not on their behalf.
Tell us if something does not work
We treat accessibility reports as defects, not as feedback. Our feedback route has not yet received any accessibility-related submissions since it was established; we test it periodically to confirm it remains functional.
Please tell us the page address, what you were trying to do, and the browser or assistive technology you were using.
We acknowledge accessibility feedback within 5 working days and aim to resolve the issue or provide an accessible alternative within 20 working days. As this is a newly formalised commitment, we will report our actual performance against it at the next scheduled review. Where a fix will take longer, we will tell you why and when to expect it.
If you are not satisfied with our response, you may escalate to the Grievance Redressal Officer, Dr. Alka Rao, CSIR-IMTECH (raoalka@imtech.res.in), and thereafter to the Office of the Chief Commissioner for Persons with Disabilities, Department of Empowerment of Persons with Disabilities, Government of India.
Alternative formats on request
If you need anything on this platform in a format we do not currently offer — a transcript, a tagged or large-print document, an audio-described version, or content supplied in a different medium — contact us and we will provide it. There is no charge.
Statement prepared: 31 July 2026 · Updated: , following remediation of Level A defects and automated re-testing
Next scheduled review:
This statement is reviewed at least twice a year and after any significant change to the platform.