Who runs ImageSize, and where the numbers come from
ImageSize is an independent browser-based image tool: fixed social media specs, bulk compression and icon sets. Everything runs on your device — there is no upload step, because there is no server to upload to.
What the site does
Eleven fixed social media specs, bulk compression up to 60 files at a time, and a full icon set from one logo. Results are produced by your browser and saved straight to your device.
Where the numbers come from
Every pixel size, aspect ratio and file limit on the size pages is checked against the platform’s own documentation, and each spec page links the sources it was checked against. Where a platform publishes no hard limit, the page says so rather than inventing one.
What it deliberately does not do
No account, no advertising, no third-party font or script CDN. The browser stores a theme preference, your analytics choice, and — only if you allow it — a Google Analytics cookie.
How it stays current
Platforms change their layouts, so specs drift. The size pages are re-checked and each one shows the date it was last verified. If a number looks wrong, the contact address below is the fastest way to get it fixed.
At a glance
- Launched
- October 2026
- Languages
- 9
- Image handling
- On your device only
- Account required
- No
Corrections and contact
Found a spec that is out of date, or a limit that has changed? Write to hello@imagesize.pro — corrections are the most useful thing you can send.
hello@imagesize.proLast updated 2026-10-30