
Idun Simple Upload Renamer lets you rename files automatically using customizable patterns, or review and edit filenames individually through a simple popup, before WordPress saves uploaded media. It supports WordPress Core media upload workflows, including the Media Library and Block Editor.
Choose between two normalization modes: Idun normalization, the default option for consistent lowercase ASCII filenames, and WordPress standard, which preserves filenames according to WordPress settings.
Simple. Lightweight. Effective.
- Review and edit filenames individually, or use
{original-name}in a filename pattern to rename files automatically without individual confirmation. - Build filenames with
{upload-name},{original-name},{post-name},{custom-string},{date}(YYYYMMDD),{year},{month},{day}, and{sep}(the selected hyphen or underscore separator). - Choose Idun normalization for lowercase ASCII filenames or WordPress standard normalization to leave final filename sanitization to WordPress.
- Enable renaming for all accepted file types or selected file groups.
- Review a live pattern example and reset the editable filename when needed.
- Upload several files while retaining individual filename preparation.
Clear, descriptive filenames can also support SEO by helping search engines understand the content of uploaded files, particularly images. Idun Simple Upload Renamer makes it easier to apply consistent naming conventions, while leaving the choice of filenames and naming patterns to the user.
WordPress continues to determine permitted file types, process uploads, sanitize filenames, resolve filename collisions, and store attachments. For block-editor uploads, Idun uses the WordPress REST upload workflow. It does not rename existing media, change existing URLs, or replace WordPress upload handlers. Uploaders that do not use the supported WordPress Core interfaces are not intercepted.
Screenshots

Configure filename patterns and review a live example in Settings.

Review and edit a filename during a Media Library multi-file upload.

Rename a file before upload from the WordPress Block Editor.