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Test SCORM Packages Without an LMS, Free Browser-Based SCORM Accessibility Testing Tool

By Nathan Stoker · February 11, 2026 · 8 min read

Test SCORM Packages Without an LMS, Free Browser-Based SCORM Accessibility Testing Tool

Every e-learning developer knows the pain. You build a course, package it as a SCORM zip, upload it to your LMS, launch it, find a bug, fix your code, re-export, re-upload, and test again. Each cycle eats minutes. Over the course of a project, those minutes become hours.

What if you could skip the upload entirely and test SCORM packages right in your browser — including accessibility?

That's exactly what the SCORM Viewer does. It's a free, browser-based SCORM accessibility testing tool that lets you drag and drop a .zip file, instantly preview your course, watch every SCORM API call in real time, and run WCAG accessibility audits — all without an LMS.

What the SCORM Viewer Does

Drop a SCORM .zip onto the viewer and it extracts the contents, reads the imsmanifest.xml, detects SCORM 1.2 or 2004, injects a working API, and launches your course in a scaled preview window. It works with Articulate Storyline, Rise 360, and custom HTML/CSS/JS courses.

The debug panel gives you four tabs of instant visibility into what's happening under the hood.

Console logs every SCORM API call in real time — color-coded by type with a filter field for narrowing to specific keywords like "score" or "lesson_status."

Data Model shows the full state of all CMI values. Default values appear in blue, anything your course has changed shows in gold, and empty fields get flagged with a gold "(empty)" badge so you can spot missing data at a glance.

Files lists every asset in the package. Click any file to preview it — images render visually, text files show source code, audio and video play inline. A download icon lets you save individual assets without extracting the full zip.

A11y runs live WCAG accessibility audits directly on your loaded course. More on this below.

Try It With a Sample Course

I've created a sample SCORM 1.2 course called Password Security Essentials that you can download and drop straight into the viewer. Use the download link in the header of this article.

It's a fully functional five-minute course built with HTML, CSS, and JavaScript — no authoring tool required. It includes content slides, a scored quiz, and full SCORM reporting. Here's how to test it:

  1. Download the .zip file above

  2. Go to the SCORM Viewer

  3. Drag the .zip onto the drop zone (or click Browse Files)

  4. The course launches instantly in the preview pane

Open the debug panel and click through the course. Watch the Console as it initializes, complete the quiz and watch the score get written, then confirm the status changes to completed. All in seconds, with zero LMS involvement.

Built-In SCORM Accessibility Testing

Testing whether your course works is only half the battle. You also need to know whether every learner can use it. The A11y tab performs real-time WCAG accessibility auditing on your loaded course — no external tools or browser extensions needed.

Navigate to any slide and click Scan Slide. The viewer inspects the live DOM and checks eight categories: Images (missing alt text, unlabeled SVGs), Contrast (computed ratios against AA/AAA thresholds), Keyboard (non-focusable click handlers, positive tabindex), Forms (controls without accessible labels), Headings (skipped levels, missing h1), ARIA (invalid roles, broken ID references), Links (empty or vague text like "click here"), and Language (missing lang attribute).

A dropdown lets you choose WCAG A, AA, or AAA compliance. Most organizations target AA, which is the Section 508 baseline for federal agencies.

Click Scan All to audit every slide automatically. Results are organized by slide and category with severity badges, WCAG references, and HTML snippets of offending elements. Click Export to download a plain-text report ready to hand off as a remediation checklist.

The Testing Workflow That Saves You Hours

The real power is the speed of the feedback loop.

Without the Viewer: Export → upload to LMS → wait → launch → click through → check reports → find the bug → fix → re-export → re-upload → repeat. Each cycle: 3–5 minutes.

With the Viewer: Fix your code → zip → drag onto the viewer → check the debug console → fix and repeat. Each cycle: 10–15 seconds.

Ten iterations on a quiz scoring bug saves you 30–45 minutes. Over a project with dozens of interactions, the time savings are substantial.

Why This Matters for Vibe Coding

If you've been following trends in development, you've heard "vibe coding" — coined by AI researcher Andrej Karpathy in early 2025. You describe what you want in plain language, an AI generates the code, you test it, give feedback, and iterate.

For e-learning developers, this means you don't need to be a JavaScript expert to build a custom quiz, an animated interaction, or a drag-and-drop activity. But vibe coding lives and dies by the feedback loop. If "testing it" means uploading to an LMS every time, the whole workflow grinds to a halt.

The SCORM Viewer removes that friction. Your vibe coding workflow becomes:

  1. Prompt the AI with what you want

  2. Generate the SCORM package

  3. Drop the .zip onto the viewer

  4. Check the debug panel and run an accessibility audit

  5. Refine your prompt with specific feedback

  6. Repeat until it's right

The Password Security Essentials sample course was built using exactly this workflow, content slides, quiz logic, SCORM reporting, and responsive layout, all generated through iterative prompting and tested without touching an LMS until the final upload.

Tips for Getting the Most Out of the Viewer

Check Console first when something breaks. If scores or completion aren't reporting, the Console shows exactly what API calls are being made — or not made.

Run an accessibility audit before you ship. It takes seconds and catches problems that functional testing never will.

Storyline and Rise packages work too. Drop in any SCORM export and see every API call those tools make.

Click "New" to reset. Clears the previous session completely so you start clean.

Key Takeaways

The SCORM Viewer solves two persistent pain points at once. It eliminates the slow upload-test-reupload cycle by letting you test SCORM calls instantly, and with built-in WCAG accessibility auditing, it catches problems, missing alt text, broken ARIA, insufficient contrast, keyboard traps, that functional testing never reveals.

Paired with vibe coding, it's the missing piece that makes AI-assisted e-learning development practical. Prompt, generate, test, and refine in a continuous loop without ever touching your LMS until the final upload.

Try it now with the sample course, or drop in one of your own packages. You might be surprised by what your courses are telling the LMS, and what they're not telling your learners.