Are my Web and social images uploaded?

No. Their content is processed locally in this browser.

Does the checker distinguish requirements from recommendations?

Yes. Every check shows its authority, source and review date.

Can I download without an account or subscription?

Yes. Analysis, core fixes and exports remain available without an account.

Sparkpond

Web performance & discoverability

Prepare fast, responsive Web images

Generate Open Graph, Discover, hero, responsive, favicon and PWA assets with local browser processing.

Local processingYour images are processed in this browser. Their content is not sent to Sparkpond.

Strict local modeDisables analytics, third-party ads and optional model downloads before import.

OnlineStandard mode2026.08.10.1

02 · TARGETS

Where will this image be used?

3 destinations selected · 9 checks

Drop images here

or choose files, paste an image, or select a folder.

Images are processed on this device.

Image URL

Direct URL import contacts the source website from your browser. Strict local mode disables it.

GUIDE & RULES

Prepare a Web image without guessing

Asset Checker does more than display a table. It applies these rules to the real file, explains each mismatch and generates a checked output from the original.

Active Web presets · reviewed 10 Aug 2026
Destination	Output dimensions	Ratio	Authority
Open Graph image	1200 × 630 px	1.905:1	Sparkpond recommendation
Google Discover image	1280 × 720 px	1.778:1	Official source linked
Responsive image set	1920 × 1280 px	1.500:1	Official source linked

BEFOREApproximate ratio, heavy file, GPS retained

Crop, recompression or location disclosure risk.

AFTERPreviewed crop, target weight, cleaned metadata

The variant is reanalyzed before export.

Common Web image mistakes

Using the right dimensions with a different aspect ratio.
Placing text or a logo where the interface may crop it.
Treating a recommendation as an official requirement.
Exporting from an already recompressed variant.

FAQ

What image size should I use for Web?

Open Graph image: 1200 × 630 px. Select multiple destinations to compare crops before export.

Does Asset Checker change my original?

No. Every correction starts from the original file kept in this tab’s memory.

Are the rules current?

Each rule shows its review date and authority. Values without an official source are labeled Sparkpond.