Why is my SCORM package so large even after publishing?

Authoring tools like Articulate Storyline apply their own export compression, but it operates on whatever source images were imported. If source images were full-resolution uncompressed files, published output is still large. Compressing source images before import gives you control at the source.

Will compressing screenshots of software interfaces affect legibility in simulations?

No — PNG files are optimized losslessly in Deliteful. Every pixel in a software screenshot is preserved exactly, so interface text, button labels, and menu items remain fully legible in the published course.

What quality setting should I use for scenario photography in eLearning?

Quality 78–82 is appropriate for scenario photography displayed at typical eLearning slide dimensions (1280×720 or 1920×1080). At these settings, compression is not perceptible and file sizes are 40–60% smaller than unoptimized originals.

Can I use Deliteful to compress images for Rise 360 courses?

Yes. Rise 360 courses are image-heavy by design — background images, illustrated characters, and photos are core to most templates. Compressing these before upload to the Rise media library reduces both upload time and published course weight.

Reduce eLearning Course File Size With Optimized Images

SCORM and xAPI course packages bloat quickly when source images aren't compressed before authoring — a 200 MB Articulate Storyline export is often 60–70% images that were dragged in at full resolution. Deliteful lets instructional designers compress image libraries before they enter the authoring tool, producing leaner packages that upload faster to any LMS.

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Instructional designers working in Articulate Storyline, Rise, iSpring, or Adobe Captivate know the friction: the LMS has a course package size limit (Moodle defaults to 256 MB; many hosted LMSs cap at 100–500 MB), and the published SCORM zip is always larger than expected. The root cause is almost always unoptimized images in the source project. Compressing assets before import — rather than relying on the authoring tool's export compression — gives designers precise control over the quality-to-size tradeoff for each image type.

Deliteful handles the two image categories instructional designers work with daily: PNG files for UI screenshots, software simulations, and icon-based graphics (optimized losslessly, preserving text and interface sharpness), and JPEG files for scenario photography, backgrounds, and character illustrations (compressed with the quality slider, default 80). Processing a full course image library before the project is authored takes minutes and can reduce published package size by 40–60%.

How it works

1
Export or collect course image assets
Gather all PNG and JPEG images before importing them into your authoring tool.
2
Compress in Deliteful
Upload the batch — PNG files are losslessly optimized; set JPEG quality to 78–82 for scenario photography and backgrounds.
3
Import compressed assets into your authoring tool
Use optimized images as source assets — the published SCORM package will be significantly smaller.

Frequently asked questions

Why is my SCORM package so large even after publishing?: Authoring tools like Articulate Storyline apply their own export compression, but it operates on whatever source images were imported. If source images were full-resolution uncompressed files, published output is still large. Compressing source images before import gives you control at the source.
Will compressing screenshots of software interfaces affect legibility in simulations?: No — PNG files are optimized losslessly in Deliteful. Every pixel in a software screenshot is preserved exactly, so interface text, button labels, and menu items remain fully legible in the published course.
What quality setting should I use for scenario photography in eLearning?: Quality 78–82 is appropriate for scenario photography displayed at typical eLearning slide dimensions (1280×720 or 1920×1080). At these settings, compression is not perceptible and file sizes are 40–60% smaller than unoptimized originals.
Can I use Deliteful to compress images for Rise 360 courses?: Yes. Rise 360 courses are image-heavy by design — background images, illustrated characters, and photos are core to most templates. Compressing these before upload to the Rise media library reduces both upload time and published course weight.

Create your free Deliteful account with Google and compress your next course image library before it goes into the authoring tool.