UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

Image Batch Rename & Download

Rename multiple images using a pattern with {n} and {name} placeholders, preview new names, and download as ZIP.

About Image Batch Rename & Download

The Image Batch Rename tool lets you rename a set of image files using a flexible naming pattern before downloading them all in a ZIP archive. Use {n} as a placeholder for an auto-incrementing number (starting from any value you choose) and {name} to include the original filename without extension. This is useful for organizing camera roll exports, standardizing asset names for a project, or preparing files for batch upload. The ZIP is assembled entirely in your browser using JSZip.

Why use Image Batch Rename & Download

  • Renames files entirely in-browser — no server upload, no privacy concerns
  • Supports {n} for sequential numbering and {name} for original names
  • Preview panel shows exact before/after names before committing
  • Downloads all renamed files in a single ZIP for easy organization
  • Faster than renaming files manually one by one in Finder or Explorer.
  • No file size or count limit beyond browser memory — works for hundreds of images.

How to use Image Batch Rename & Download

  1. Click the file picker and select multiple image files
  2. Enter a name pattern in the Pattern field, e.g. 'photo-{n}' or '{name}-edited'
  3. Set the Start Number if you want numbering to begin at something other than 1
  4. Click 'Preview Names' to see the old and new filenames side by side
  5. Click 'Download ZIP' to build and download the ZIP with all renamed files
  6. Always click Preview Names before downloading to confirm patterns produce the right output.
  7. If the preview shows duplicate names, adjust the pattern to include {n} so each file ends up unique.

When to use Image Batch Rename & Download

  • When downloading a batch of stock photos and needing consistent naming
  • When organizing camera exports before uploading to a CMS
  • When preparing image assets with a sequential naming convention
  • When you need to add a prefix or suffix to many image filenames at once
  • When preparing an image set for a CMS that requires SEO-friendly filenames (e.g. 'product-photo-1.jpg').
  • When standardizing exports from multiple cameras with different default filename formats.

Examples

Camera roll cleanup

Input: 20 files named IMG_4501.jpg through IMG_4520.jpg, pattern 'vacation-{n}', start 1

Output: ZIP containing vacation-1.jpg through vacation-20.jpg

Project asset prefix

Input: 5 design files (mockup.png, hero.jpg, etc.), pattern 'projectA-{name}'

Output: ZIP containing projectA-mockup.png, projectA-hero.jpg, etc.

Sequential portfolio numbers

Input: 12 photos, pattern 'portfolio-{n}', start 100

Output: ZIP with portfolio-100.jpg through portfolio-111.jpg

Tips

  • Use 'photo-{n}' with Start Number 100 for filenames like photo-100.jpg, photo-101.jpg — useful for matching legacy archives.
  • Combine placeholders: '{name}-edited-{n}' produces 'sunset-edited-1.jpg', 'sunset-edited-2.jpg' for clear traceability.
  • Select files in alphabetical order in your file picker if you want sequential numbers to match alphabetical sort.
  • Use a leading zero by prefixing the start number (e.g. 'img-{n}' with start 001 — note: numbers are not auto-padded).
  • Preview names before downloading the ZIP — once the archive is built, regenerating with a different pattern requires re-uploading.

Frequently Asked Questions

What placeholders are available in the pattern?▾
{n} inserts the current sequential number (starting from Start Number). {name} inserts the original filename without its extension. Both can be used together.
Does renaming modify the image content?▾
No. Only the filename in the ZIP changes. The image data is copied byte-for-byte from the original file.
What library creates the ZIP file?▾
JSZip is loaded from a CDN when you click Download ZIP. It runs entirely in your browser.
Is there a limit to how many files I can rename?▾
There is no hard limit, but processing many large images simultaneously may use significant browser memory. Files are read as ArrayBuffers and stored in the ZIP in memory before downloading.
Can I use special characters in the pattern?▾
Yes, but avoid characters that are invalid in filenames on your operating system (e.g. / \ : * ? " < > | on Windows).
Are file extensions preserved?▾
Yes. The tool appends the original file extension to the new name automatically.
Can I pad numbers with zeros (e.g. 001 instead of 1)?▾
Not currently. The {n} placeholder uses raw integer values. To get padded numbers, you can rename the ZIP contents on your operating system or in another tool.
What is the maximum total size?▾
The browser must hold all files in memory simultaneously to build the ZIP. Practical limits are around 1–2 GB on desktop and 200–500 MB on mobile depending on available RAM.

Explore the category

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Glossary

Placeholder
A token in the pattern (here {n} or {name}) replaced with a dynamic value at rename time.
Sequential numbering
Auto-increment from a start value, used to give each file a unique counter.
ZIP archive
A compressed container format that bundles multiple files into a single download.
JSZip
A JavaScript library that builds ZIP archives in the browser without server help.
ArrayBuffer
A raw binary data structure used to read each file's contents into memory before adding it to the ZIP.
File extension
The .jpg, .png, .webp suffix indicating the file's format — preserved automatically by this tool.