Compress senior-high portfolio files
Documents cap at 4 MB and media at 10 MB, with no leeway. Here is what those numbers buy you in seconds of video, plus a compressor that runs in your browser.
- Caps
- 4 MB per document, 10 MB per media file
- Privacy
- Your work is never uploaded, it runs locally
- Devices
- Mobile browsers can pick from the camera roll
Target size 4 MB
Drop images or videos here
Or click to browse, or just hit Ctrl + V to paste a screenshot
Images: JPEG / PNG / WebP / GIF / BMP · Videos: MP4 / MOV / WebM / AVI
Results
Before / after
The caps are 4 MB and 10 MB, with no exceptions
Course learning outcomes and diverse performance items follow the same rule: 4 MB per document, 10 MB per media file, counted per item. These figures date from the 111 academic year increase, which doubled the previous allowance. The upload system does not compress on your behalf, over the limit simply means failure.
| Type | Accepted formats | Per-item cap |
|---|---|---|
| Document | PDF, JPG, PNG | 4 MB |
| Media | MP3, MP4 | 10 MB |
The ministry's own guidance puts 4 MB at roughly fifteen pages of mixed text and images, and 10 MB of MP4 at about fifty seconds in 480p or twenty seconds in 720p.
What ten megabytes actually buys
File size is bitrate times duration, so "how long can I record" depends entirely on the quality you accept. Working backwards from 10 MB after allowing for audio:
| Quality | Sensible bitrate | Fits in 10 MB | Suits |
|---|---|---|---|
| 1080p | ~8000 kbps | ~10 seconds | Rarely worth it |
| 720p | ~4000 kbps | ~21 seconds | Demos, close-up results |
| 480p | ~1600 kbps | ~52 seconds | Spoken reports, screen recordings |
| 360p | ~800 kbps | ~105 seconds | Barely legible |
| Audio-only MP3 | 128 kbps | ~10 minutes | Interviews, music |
Phones default to 1080p or 4K at 20 Mbps and up, which means 10 MB covers about four seconds of untouched footage. That is why every casual clip blows past the limit.
The right order is: trim to the part that matters, then compress. Trimming beats quality reduction every time, thirty seconds at 720p is far more persuasive than ninety seconds at 360p.
A short PDF that somehow weighs several megabytes
Almost always embedded phone photos at full resolution. A single 4000 × 3000 shot is 3 MB before you start; drop three into a document and export to PDF and the result is doomed. The fix, in order:
- Compress each photo first, keeping the long edge between 1600 and 2000 px.
- Rebuild the document with the compressed images, then export.
- If the source is a scan, uploading a JPG directly is often smaller than any PDF, and JPG is accepted.
Choosing "minimum size" when exporting to PDF helps too, but nowhere near as much as fixing the source images.
Before you upload
- Filename: avoid special characters; some school-side systems reject them.
- Size: check the real byte count in your file manager rather than guessing.
- Format: PDF/JPG/PNG for documents, MP3/MP4 for media.
- Legibility: open the compressed file and read it yourself, especially scans.
- Timing: the system gets congested near the deadline.
The tool above is preloaded with both the 4 MB and 10 MB targets, switch between them in the dropdown. Everything runs in your browser, so your work never reaches a server.
Frequently asked questions
What are the actual size limits?
Both course learning outcomes and diverse performance items use the same caps: 4 MB per document (PDF, JPG, PNG) and 10 MB per audio or video file (MP3, MP4). These are the doubled limits introduced for the 111 academic year. Going over means the upload simply fails, the system will not compress for you.
My clip is barely fifteen seconds and already over 10 MB. Is that normal?
Completely normal. Phones record at 1080p or 4K with bitrates north of 20 Mbps, which fills 10 MB in about four seconds. Re-encode at 720p and the same 10 MB holds roughly twenty seconds.
How do I shrink an oversized PDF?
Nine times out of ten the bloat is full-resolution phone photos embedded in the document. Compress those images first, rebuild the PDF, and the problem disappears. For scanned pages, uploading a plain JPG is often smaller than the PDF, and JPG is an accepted format.
Will teachers still be able to read it?
For documents, yes, keep the long edge around 2000 px at a visually lossless quality and the text stays crisp. For video there is a real trade-off: twenty seconds at 720p communicates far more than ninety seconds of mush.
Does this tool upload my work anywhere?
No. Compression runs entirely in your own browser and no file content is transmitted. That matters here, a portfolio is tied to your real identity.