Assessment files

Reduce a coursework presentation file without losing essential content

A presentation that exceeds an upload limit needs a controlled reduction, not a rushed sequence of random conversions. Keep the editable original safe and find out which part of the file is large. Then change only what the assessment permits while preserving the evidence and accessibility information the marker needs.

Microsoft documents media compression and supported audio and video formats in PowerPoint. Its compression guidance warns that embedded subtitles and alternate audio tracks can be lost. That makes inspection of a separate output copy essential. Follow your course's file requirements and use its support route if the required content cannot fit through the stated submission method.

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Read the limit precisely

Check the assessment's maximum file size and accepted formats in the current submission instructions. Confirm whether the limit applies to each file or the whole submission. Do not borrow a limit from another module or an old help page. Write down the actual size of your current file so the reduction target is clear.

Create a separate working copy for the size-reduction process. Keep the original project and source media in their approved location. Name the copy to show its purpose. This gives you a way to compare outputs and undo an unsuitable change without trying to reconstruct the full presentation from a compressed version.

Identify the largest material

Look for long videos, high-resolution images, duplicated media or unused content retained in the deck. Decide whether each item is required for the argument or assessment. Removing an unused duplicate is different from lowering the quality of a graph whose labels must remain readable. Start with changes that preserve the intended content completely.

Check whether a video is embedded or linked and what the course expects to receive. A small deck that points to a file on your own laptop is not a complete submission. Do not solve the size problem by breaking the relationship between the presentation and its evidence. Use the approved delivery method for any permitted linked material.

Apply one controlled reduction

Use the application's documented media or image options on the separate copy. Select a setting suited to the required viewing task rather than the smallest possible output. Keep a note of the change and resulting file size. One change at a time makes it easier to identify why a caption disappeared or a figure became unclear.

If compression can remove subtitle or alternate-audio information, preserve the source and follow the course's accessible-media requirements. Check the supported method for retaining or replacing required tracks. Do not assume a smaller file is acceptable merely because the main picture still plays. The relevant information includes more than the visible video frame.

Inspect the difficult sections

Open the reduced file and examine the most demanding slides: small text, data plots, diagrams and fast or detailed video. Listen to speech and check synchronisation. Compare the output with the original where a change is unclear. A quick glance at the title slide will not reveal whether essential content was damaged.

Test playback through the intended presentation or submission route if a sample facility is available. If the format is rejected, use the official guidance for the actual application and platform. Avoid uploading private or restricted coursework to an unrelated conversion service simply because it promises an immediate smaller file.

Escalate an unresolved mismatch

If the necessary content still exceeds the permitted limit, contact the module or technical team before the deadline with the file type, size and requirement. Ask for the authorised alternative submission route. Do not replace the required deliverable with a public link or omit assessed material without agreement.

Retain the exact accepted submission and its receipt alongside the original. Extra storage may help retain project media, but it does not change the portal's upload rules. The useful outcome is a file that fits the approved method and still communicates the work accurately, with any necessary accessibility content intact.

Your next steps

  • Record the current file limit and format.
  • Preserve the original before compression.
  • Check subtitles and alternate audio after changes.
  • Ask for an authorised route if required content still will not fit.

Sources and further help

Sources were consulted on 5 September 2026. Provider terms and services can change; check your exact booking, product or university service.

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