MMaster Tools
ImageRuns on your device

Batch Rename Images

Rename a whole folder of images at once using a pattern with sequence numbers, original names, dates, and extensions.

How it works

  1. 1

    Drop any number of image files and set a rename pattern using the available tokens: {n} for sequence number, {name} for the original filename stem, {date} for today's date, and {ext} for the file extension.

  2. 2

    Adjust the start number and how many digits to zero-pad the sequence to, for example 3 digits gives 001, 002, 003.

  3. 3

    Click Rename & Download to receive a zip with all the files renamed. No pixels are changed — only the filenames.

Questions

What tokens can I use in the pattern?

{n} inserts the zero-padded sequence number. {name} inserts the original filename without the extension. {date} inserts today's date as YYYY-MM-DD. {ext} inserts the original file extension in lower case.

What happens if two files would get the same name?

The tool detects collisions and adds a numeric suffix before the extension — for example photo.jpg becomes photo-1.jpg — so no file is ever silently overwritten.

Are the image pixels changed?

No. This tool only renames the files. The bytes inside each image are copied without modification, so quality, metadata, and format are all preserved exactly.

Does my image leave my device?

No. Renaming and zipping run entirely in your browser. No file bytes are sent to a server at any point.

ICO Converter

ICO Converter

Build a multi-size .ico file from a PNG or JPG, choosing which pixel sizes to include — ideal for application icons and browser favicons.

Favicon Generator

Favicon Generator

Generate a full favicon set from one image: a three-size ICO, an Apple touch icon, PWA icons, a webmanifest, and the HTML.

SVG Converter

SVG Converter

Rasterize an SVG file to PNG, JPEG or WebP at a scale factor you choose. The result is a pixel image — not editable vector paths.

SVG to JPG

SVG to JPG

Convert an SVG to a JPEG image at the export scale you set, composited onto a solid background colour — because JPEG has no transparency.

Adjust Brightness

Adjust Brightness

Lighten or darken an image by shifting every pixel's brightness up or down with a single slider.

Adjust Contrast

Adjust Contrast

Increase or reduce the difference between light and dark areas to make an image pop or flatten it.

Adjust Saturation

Adjust Saturation

Boost or reduce the intensity of colours in an image, all the way from vivid to greyscale.

Rotate Hue

Rotate Hue

Shift every colour in an image around the hue wheel to change the overall colour cast.