Images, files and media limits

Limits for the files you upload directly into a lesson's blocks (images, PDFs, audio), separate from the AI text you paste in.

Per-file limits

These apply on every plan:

  • Image: JPEG, PNG, WebP or GIF. Large images, up to 50 MB, are resized automatically in your browser before they upload, so each one is stored at up to 2 MB. A GIF is not resized and must be 2 MB or smaller.
  • PDF attachment: up to 4 MB. To shrink a larger PDF, save a smaller copy: in PowerPoint or Word choose File > Export > PDF with Minimum size, or in Acrobat use Reduce File Size.
  • Audio clip: up to 3 MB, MP3 or M4A.

Per-course limits, by plan

Limit Free Pro
Images per course 40 100
PDF and audio files per course 10 30
Media per course (all uploads together) 50 MB 100 MB

The media limit covers everything you upload into one course: presentation slides, block images, PDFs and audio.

Note

See Free and Pro.

Delete an upload to free a slot

Every file you upload stays in the course until you delete it, even after you remove the block that used it. To get a slot or space back:

  1. Open any image, PDF or audio block in the lesson editor.
  2. Click Manage uploads under the file picker.
  3. The panel lists every image and file in the course, with its size, how much media space is left, and an In use marker on anything a lesson still points to.
    The Manage uploads panel showing media used out of the course allowance, a list of images with sizes and In use markers, and PDF and audio files
    Manage uploads: space left, every upload with its size, and In use on files a lesson still uses.
  4. Click Delete next to a file that is not in use and confirm.

A file marked In use cannot be deleted. Remove it from the lesson first, then delete it here. Deleting an upload cannot be undone, and a saved version that still shows it keeps its own copy inside its package.

If something goes wrong

  • "This image is ... MB. The limit is 2 MB" (a GIF) or the same message for an audio file: the individual file is over its size limit - compress it or pick a smaller one.
  • "This image is too large to process (... MB). Use an image under 50 MB.": the picture is too big to resize in the browser - export a smaller version first.
  • "This PDF is ... MB. The limit is 4 MB.": save a smaller copy of the PDF as described in the message, then attach it again.
  • "Image limit reached" or "File limit reached": your course reached the per-course count for your plan. Every file uploaded to the course counts, even after you remove it from a block - delete it under Manage uploads to free a slot. See Free and Pro: what is included.
  • "This image is ... MB. Only ... MB of the ... MB media limit for this course is left.": the file fits its own size limit, but not what is left of the course's media allowance. Delete an upload you no longer need, or move the material to a second course.
  • An upload is rejected outright: only JPEG, PNG, WebP and GIF images are accepted in image blocks, only PDF files in an attachment block, and only MP3 or M4A files in an audio block.

Next

See how these fit into overall course limits: Course and storage limits.