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If supported, use Install. On Android and desktop, look for Install app in the browser menu. On iPhone/iPad, use Safari → Share → Add to Home Screen. Menu names can vary by browser.

Batch file renamer

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Batch file renamer. Up to 20 files, 10 MB each, 50 MB total.

All tools are free to use. File size and processing limits may vary by tool.

Up to 200 files, 20 MB/file and 50 MB total. Files stay on your device; originals are unchanged. Extensions are kept; duplicate names receive numbered suffixes. Find/replace is case-sensitive.

How to use

Select files and set prefix, suffix, find/replace and numbering options. Compare original and new names in the preview. The ZIP button packages the original bytes under their new names; you can also download the name list as CSV. Up to 200 files, 20 MB/file and 50 MB total. Files stay on your device; originals are unchanged. Extensions are kept; duplicate names receive numbered suffixes. Find/replace is case-sensitive.

How are files processed?

Browser tools keep files on your device. Advanced document tools upload files for temporary server processing; the tool shows this before upload. Web lookups send queries to the server and public lookup services.

Practical guide

Batch File Renamer: Sequential Archive Names

Sorting mixed filenames after a shoot takes hours. Rename up to 20 files in your browser, adding a prefix and sequential numbers. Original extensions stay unchanged. Use dashes instead of special characters.

Read the guide →

Practical articles on this topic

Batch File Renaming: Build a Clear Numbering System

Names such as IMG_001 and final-final make a collection hard to navigate.

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Image Resizer

Change an image’s pixel dimensions. Enter photo width and height to create a resized output; pixel resizing does not set a target file size in KB.

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Crop Image

Crop images in the browser. Drag the edge guides on the preview to mark the area, then download as PNG or JPG. Up to 20 MB and 40 megapixels, and files are never uploaded.

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JPG to PNG

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PNG to JPG

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WebP to JPG

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