WEBP Metadata Editor

Copyright lines, authorship and capture dates are the sort of details that matter enormously on the rare occasion they are needed, and are almost impossible to reconstruct after the fact. A photograph published three years ago with no embedded credit is a photograph whose ownership has to be argued from emails and file names. Writing the details into the file at the point of export takes a minute and removes that argument permanently.

The reason embedding works where a separate record fails is that the data travels with the image. A spreadsheet of credits lives in one place and goes stale the moment a file is copied, renamed, handed to a client or pulled into a different content system. Metadata embedded in the file survives all of it, because it is part of the file rather than a note about it, and it can be read years later by anyone who opens the image with software that cares.

This editor writes the fields that carry the most practical weight. Title and author identify the work and its creator, copyright states the ownership claim in the place where people actually look for it, and software records what produced the file. The camera make and model let you correct a mislabelled body or fill in a value that was never written. Three separate date fields cover the moments that get confused with one another: when the file was last modified, when the photograph was actually taken, and when the original was digitised.

The rule for blank fields is the one worth remembering, because it behaves differently from most forms. Leaving a field empty does not mean leave it alone; it means remove that value from the file. That is deliberate and useful, since it gives you a way to delete a stale credit or an unwanted software tag without needing a separate stripping tool. Fill in only what you want written, and leave the rest empty if you would rather they were gone.

WEBP is handled properly rather than ignored. Writing metadata into WEBP is not the same job as writing it into JPEG, because the container is built from chunks and needs a specific extended header to declare that an EXIF block is present. The writer adds that header, inserts the EXIF chunk, and rewrites the container size accordingly, so the values you typed genuinely survive into the exported WEBP file instead of being silently dropped at the last step.

Editing is separate from exporting, which keeps things predictable. Nothing is written until you press Save Metadata, so you can review the fields before committing, and the changes are applied when the file is produced. Output starts on Keep Original, so choose WEBP when you want a compact web friendly result carrying the values you just set. The whole job runs in your browser, so the photograph is never uploaded anywhere.