Image SEO utility
Review image size, dimensions, filename structure, format choice and publishing readiness in one browser-based workflow.
Free browser tool
Upload an image and get a practical report for website image SEO, compression opportunity, social preview fit and publishing context.
Drop your image here or choose a file
Supports JPG, PNG, WebP, static GIF and basic SVG. Recommended visual limit: up to 15 MB.
Privacy-first: your image is analyzed locally in your browser.
Optional accessibility check. PublishPixel does not invent visual descriptions.
Scores are estimated from common platform guidelines and practical publishing heuristics.
This tool is designed for the stage before an image enters your CMS, product page or article workflow. It helps you catch oversized dimensions, generic file names and format mismatches while the file is still easy to change.
Instead of treating image SEO as only alt text or metadata, the checker looks at the broader publishing picture: size, ratio, naming, social compatibility and compression opportunity.
A strong image asset should work for readers, support website performance and remain flexible for common placements such as blog featured images, Open Graph previews, thumbnails and social crops.
That is why the checker uses practical presets rather than one generic rule for every image.
Images are analyzed locally in your browser and are not uploaded by the checker. Optional export helpers in PublishPixel also run locally when the browser supports them.
The output is a recommendation layer, not a promise of ranking, approval or exact rendering on third-party platforms.
Google Images and CTR
Better image preparation can improve how assets support search visibility, page quality and click-through potential. Clean filenames, right-sized dimensions and lighter files do not guarantee traffic, but they can make your pages easier to publish, faster to load and more consistent across search and social previews.
In practice, strong image SEO means the asset fits the destination. A blog feature image, a Google Discover candidate and an Open Graph preview often need different tradeoffs. PublishPixel helps you make those decisions before the image goes live.
| Placement | Practical target | Main concern |
|---|---|---|
| Google Discover | 1200 px wide minimum | Too small for large search previews |
| Open Graph | 1200 x 630 | Awkward crops in link previews |
| Blog featured image | 1200 x 675 | Large files slowing article pages |
| Instagram portrait | 1080 x 1350 | Important content cut near the edges |
After the score, move into the next action that matters most: compress the file, resize it for the final placement or run a broader publish check before the image reaches the CMS.
FAQ
It reviews dimensions, file size, aspect ratio, filename quality, format suitability, compression opportunity and practical publishing fit for common web and social contexts.
No. The image analysis runs locally in your browser, similar to the other PublishPixel tools.
No. It gives practical recommendations for image SEO and publishing quality, but it does not guarantee rankings, indexing or third-party rendering.
Start with filename clarity, file weight, dimensions and the intended destination. Those usually create the biggest publishing and performance wins.
Yes. Social and search platforms can change image guidance, so verify official documentation when the upload is important.
It can help you catch oversized assets, weak formats and mismatched image dimensions before they slow down a page.