What this does
A 1MB cap is generous compared with 20–100KB forms, but phone photos still miss it. This page is about keeping a full-screen-quality image under one megabyte — typically 1600–2400px JPEG at high quality.
LMS platforms, classifieds, and some WhatsApp-to-web flows still advertise 1MB. You should not use the 20KB government recipe here; you would throw away quality you are allowed to keep.
People uploading course assignments, marketplace listings, or gallery images with a 1MB documented limit.
One megabyte is where “web photo” and “phone original” meet. You should feel almost no pain if you resize to HD-ish dimensions first. People who jump straight to quality 20% are following advice meant for 20KB forms.
If you are still over 1MB at 1920px and 70% JPEG, the shot may be extremely noisy (night ISO). Noise compresses poorly. A light denoise in another app, or a tighter crop, helps more than another quality click.
When to use it
- Moodle, Canvas, or a similar LMS rejects the file.
- A classifieds form says maximum 1MB per image.
- The photo is for screens, not a 300dpi print.
How to
- Upload. Use the original from the camera roll if you can.
- Set web width. 1920px on the long edge is a solid default for 1MB.
- Keep quality high. Start at JPEG 80–85% and lower only if needed.
- Confirm size. Download and check that the file is under 1MB before submitting.
Features
- High-quality default. You can start near 80% JPEG quality because 1MB allows it.
- Local processing. Listing photos never hit our servers.
- Instant download. Replace the rejected upload and resubmit.
Why it helps
- Looks like a real photo. You are not forced into a 320px stamp.
- Fits common LMS caps. 1MB is a default in many education products.
Use cases
- Coursework photos. Lab photos and handwritten notes must be readable and still under 1MB.
- Marketplace listings. Buyers need detail; the platform still wants small blobs.
Examples
- 12MP phone photo. Max width 1920, JPEG 82%. That combination is under 1MB for most outdoor shots.
Common mistakes
- Exporting PNG from a screenshot of a photo. JPEG is the right container.
- Shrinking to 400px because you used a 20KB tutorial. That is the wrong cap.
Tips
- Try max width 1920 and JPEG 80% first. Only drop quality if you are still over 1MB.
- Burst and Live Photos are huge. Pick a single still frame.
FAQ
- Is under 1MB always lossless?
- No. JPEG is lossy. At this budget you can keep artifacts hard to see on a phone screen.
- What if I need print?
- Do not use this cap as a print workflow. Keep the original and make a separate web copy.