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Image Filename SEO Checker

Check that your images have readable names: descriptive, lowercase, hyphen-separated and free of camera-style names.

Privacy and cost

This tool runs in your browser. What you type or paste is not sent to our servers and it costs nothing to use.

How it works

  1. Paste a list of image file names or URLs (one per line), or switch to HTML mode to extract the images of a page.
  2. Each name is tested: camera name (IMG_1234, DSC01234, screenshots), generic name, hash, spaces, underscores, uppercase, accents, length, extension.
  3. Formatting problems get a corrected name (for example mon-chat-noir.png); non-descriptive names ask you to pick a real subject.
  4. Export the table as CSV to plan the renaming.

Example

Five names: IMG_2041.JPG (camera name, underscore, uppercase), "Mon Chat Noir.png" (spaces, uppercase, fixed to mon-chat-noir.png), red-city-bicycle.webp (perfect), hero_banner_final.jpg (underscores, fixed to hero-banner-final.jpg) and Blue%20Sneakers.jpg?v=3 (space, uppercase, fixed to blue-sneakers.jpg). Result: 1 clean name, 2 warnings, 2 problems; average score 70 out of 100.

What the result means

Google says the file name gives a hint about what the image is about and recommends short, descriptive names, with hyphens between words. The score is this tool's own readability guide, not a Google metric. Renaming an image that is already indexed changes its URL, so plan a redirect or update the links and sitemap.

Common problems this tool helps with

  • Images named IMG_2041.jpg or Screenshot 2024…: the name says nothing about the content.
  • Spaces and accents that turn into %20 or encoded sequences in the URL.
  • Uppercase letters that create two different URLs on a case-sensitive server.
  • Very long or keyword-stuffed names that are unreadable and fragile to reuse.

Frequently asked questions

Hyphens or underscores in an image name?

Google recommends hyphens to separate words in URLs. Underscores are treated as a word character, so red_bike is not read as two words.

Is the file name a ranking factor?

It is one hint among others, alongside alt text and page context. It will not rescue a poor image, but a descriptive name costs nothing.

Can I keep accents in the name?

Technically yes, but accents are percent-encoded in URLs. Plain a-z letters are safer and more readable when copied.

Should I rename all my old images?

Not necessarily. Start with the pages that matter (products, articles) and keep 301 redirects from the old URL to the new one.

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