Does this only work for ecommerce images?
It fits ecommerce best, but the workflow also works for any product or catalog-style image batch that needs clearer SEO file naming.
Can I override one filename manually?
Yes. The preview table supports per-file overrides when one image needs a custom base name.
Do the originals stay untouched?
Yes. The tool previews renamed files and exports the renamed copies in ZIP form rather than altering the originals in place.
Should I rename images that are already live?
Usually not. The filename is part of the image URL, so renaming an indexed image effectively deletes the old URL and publishes a new one, which loses accumulated ranking and any inbound image links. If you must, keep a redirect from the old path. The safe time to rename is before the first upload.
How much does a good filename actually help SEO?
A little, and only on platforms where the filename survives into the public URL. Search engines list descriptive filenames as one signal among several, well behind alt text, page context, and image quality. It is worth doing on a new upload and rarely worth a migration.
What does the tool do to my text?
It lowercases everything, replaces & with the word and, drops apostrophes, strips accents down to plain ASCII, and turns every run of non-alphanumeric characters into a single dash. Leading and trailing dashes are removed and the result is capped at 72 characters.
Can I fix one filename that reads badly?
Yes. Every row in the preview table can be overridden individually, and the override still goes through the same slug rules and duplicate protection.
Are the original files modified?
No. The tool builds a ZIP containing copies under the new names. The files on your disk are untouched, and the bytes inside the ZIP are identical to the originals.
Does anything get uploaded?
No. Reading, previewing, and zipping all happen in the browser.