Viallo Blog
Honest comparisons, practical guides, and real talk about photo sharing, privacy, and keeping your memories safe.
1–24 of 318 articles
Save Photos From a Shared Album on iPhone
An app that is a website in a shell has no Downloads folder behind it, which is why a save can appear to do nothing at all. What the iOS share sheet changes, and how the saved file compares with what iCloud Shared Albums and WhatsApp hand a viewer.
Does Google Photos Have an MCP Server?
Google runs official MCP servers for Maps, BigQuery, Compute Engine and Kubernetes Engine, and Google Photos is on neither that list nor the roadmap. What the community wrappers hold instead, and which photo services did ship a first-party server.
What EXIF Data Do Photos Still Carry?
A random sample of 2 984 JPEG files published on Wikimedia Commons, read field by field. Camera serial numbers come from cameras and almost never from phones; location coordinates come from phones and almost never from cameras.
Why Do Android Photos Lose Their Location?
Android redacts the GPS coordinates out of a photo before handing it to an app, unless that app both declares ACCESS_MEDIA_LOCATION and asks for the original file. That is why a photo map has holes in it, and why the same photo keeps its location when the camera app shares it.
Which Photo Metadata Survives a Download?
Platforms drop photo metadata field by field rather than as a whole. The study fetched every accepted photo twice on two public platforms, as the copy the platform displays and as the file it offers for download, and walked the metadata block field by field. The pre-registered expectation of how many originals carry a location turned out to be wrong.
Why Photos Go Missing From a Shared Album
Four things that make a photo disappear from a shared album, how to tell which one you are looking at, and why a broken photo should stay visible rather than be quietly hidden.
Can You See Who Viewed a Shared Album?
You can know an album was opened, by how many separate visitors, on which days and which photos they opened. You cannot know their names, and the reason for that is the reason the link works at all.
Does Discord Compress Your Photos?
Discord does not resize or re-encode a photo under its file size limit the way WhatsApp does. What that limit actually is by account and server tier, what happens when a photo is too big, and why the chat preview can look softer than the stored file.
Does iMessage Compress Your Photos?
iMessage re-encodes photos between iPhones but holds up far better than SMS, MMS or RCS. The Low Quality Image Mode setting, HEIC conversion, and the two Apple routes, AirDrop and Mail, that send the file untouched.
Does Gmail Compress Photo Attachments?
Gmail does not resize or re-encode a photo attached as a file. The real limits are the 25 MB combined message cap that switches to a Drive link, and the separate size picker in the inline photo tool that can quietly shrink a photo if you let it.
Slack Keeps Your Photo, Compresses the Preview
Slack stores the photo you upload untouched and hands back the same file on download. What looks softer is a separate inline preview, not the stored file - and on the Free plan, retention limits are the bigger risk to a shared photo.
Dropbox Does Not Compress Your Photos
Dropbox states directly that it does not compress photos, and independent tests confirm files come back byte-identical. What actually explains a photo looking worse, the limits that do apply, and why a file list is not the same as an album.
Does Snapchat Compress Your Photos?
Snapchat compresses every photo and video it sends, though it does not publish an exact number the way Instagram does. Why Snapchat documents no way to send the original, what saving to Memories actually preserves, and the 5 GB free storage limit.
Does Telegram Compress Photos? (2026)
Telegram compresses photos sent the normal way, as a Photo, but not photos sent as a file. Here is exactly what changes and how to send full quality.
Does Google Drive Compress Photos? (2026)
Google Drive stores photos exactly as uploaded, with no compression. Here is how that differs from Google Photos and what the trade-off actually is.
Does Google Photos Compress Photos? (2026)
Google Photos compresses on the default 'Storage saver' setting but not on 'Original quality'. Here is what each setting actually does to your photos.
Can an AI Assistant Tell You What Is in Your Photos?
Captions, tags, dates and place names answer most questions without anything looking at the picture. What changes when an assistant actually opens one, and what that costs.
Who Can Delete Photos in a Shared Album
The right to delete belongs to the link a photo arrived through, not to the person holding it. What view-only, contribute and admin can each remove, and why there is no undo.
How to Share RAW Photos Without Converting Them First
Viallo takes DNG, CR2, CR3, NEF, ARW, ORF, RW2 and RAF, keeps the file you uploaded, and shows everyone else a picture made from the preview your camera already wrote inside it.
How to Revoke a Shared Photo Link, and What It Cannot Undo
Revoking a photo link switches it off on the server, and every major platform can do it in under a minute. Here is where each one hides the control, and the three things that survive it.
Photo Apps Where Guests Upload Without Downloading Anything
Five of six services let a guest scan a code and upload with no app and no account. The differences that matter are the upload caps, the expiry clocks and which tiers keep the original file.
Shared Album Size Limits, Compared and Sourced
Apple publishes the fullest set of shared album ceilings of any vendor here, and Google Photos publishes none of them. About half the cells in the table read not published, which is itself the finding.
What Happens to a Shared Album When Your Plan Lapses
Uploads stop almost immediately, live share links keep working at every vendor here, and deletion runs on a much slower clock. Here is the published timeline for each service, and what your guests see while it runs.
What a Shared Album Actually Means, Product by Product
The phrase covers at least five different arrangements, and Apple ships two of them that behave in opposite ways. Four questions separate them: who can add, who can see, whose storage pays, and what a person without an account gets.