The essentials
Messaging apps shrink photos before sending them so they arrive fast: the image is resized, re-encoded as a smaller JPEG and stripped of its metadata. That is fine for a phone screen and bad for prints, cropping and anything you want to keep. To send an original, send it as a file or document, use AirDrop or a cloud link, or upload to a gallery that stores the file as uploaded.
At a glance
- What compression does
- Resizes, re-encodes, strips metadata
- Worst offenders
- SMS/MMS and screenshots
- Compressed; documents arrive intact
- iMessage
- Near original unless low-quality mode
- Send originals
- As a file, AirDrop, or a link
- For events
- One gallery that keeps originals
What actually happens to the photo
A modern phone photo is 12 to 48 megapixels and several megabytes. A chat app's job is to make it appear on the other phone within a second on a bad connection, so it makes three changes before sending: it shrinks the pixel dimensions, saves the result as a JPEG with heavier compression, and removes most metadata such as the capture time, camera settings and location.
Each step is invisible on a phone screen and obvious later. Cropping a compressed photo exposes blocky detail, a print larger than a postcard looks soft, and the missing capture time means the photo sorts by the moment it was forwarded rather than the moment it was taken. Forwarding a forwarded photo compresses it again.
Screenshots are worse than any of this: a screenshot of a photo is a picture of the screen, at screen resolution, with the interface cropped out by hand.
App by app
The table summarises the default behaviour on current versions. Settings change, so check the app's own help pages before relying on a detail.
| Channel | Default result | How to send the original |
|---|---|---|
| Compressed; the HD option keeps more detail but still compresses | Send as a document | |
| iMessage | Close to original for photos; videos are compressed | Turn off Low Quality Image Mode; AirDrop for videos |
| SMS/MMS (green bubbles) | Heavily compressed; carriers cap message size | Use another channel |
| Facebook Messenger, Instagram | Compressed | Share a link to the file instead |
| Telegram | Compressed | Send as a file |
| Original, within attachment size limits | Attach or send a cloud link | |
| AirDrop | Original | Nothing to do |
How to send an original
In most chat apps the answer is the paperclip rather than the camera: send the photo as a document or file and it arrives unchanged, at the cost of not previewing inline. For a handful of photos to one person, AirDrop between Apple devices or a cloud link keeps everything intact.
For more than a handful, or more than one recipient, stop sending files and share a place. A shared album keeps a downsized copy in some services; the guides below cover Google Photos and iCloud specifically. An event gallery that stores the file exactly as uploaded, and generates a smaller copy only for browsing, gives everyone the fast view and keeps the original for the export.
Why this matters at events
Wedding and party photos are the ones people want to print and keep, and they are the ones most often passed through three group chats before anyone saves them. Collecting them at the venue, through one QR code that opens an upload page, means the first copy the couple receives is the original, not the fourth-generation forward.
Capture stores uploads exactly as sent, with no resizing or re-compression, and keeps a 2,048-pixel copy only for fast browsing. Downloads and the host's export use the originals.
Questions & answers
Does WhatsApp compress photos?
Yes, when sent as photos. Sending as a document keeps the original file. The HD option keeps more detail but still compresses.
Does iMessage reduce photo quality?
Photos are sent close to original quality unless Low Quality Image Mode is on. Videos are compressed; use AirDrop or a link for the original.
Can I recover the original from a compressed photo?
No. The removed detail is gone. Ask the sender for the original as a file, or from the device it was taken on.
What is the best way to collect original photos from many people?
Give everyone one destination that keeps files as uploaded, such as an event gallery reached by QR code, rather than collecting through chats.
Keep the moments close
Every guest’s perspective.
One shared collection.
Create a private gallery, share a QR code, and bring your event’s photos together.
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