Multiple Conversion Formats
Convert audio files such as M4A, MP3, and WAV; video files such as MP4, WEBM, and MOV; and images such as JPG, PNG, and WEBP into formats suited to your needs.
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47Tools
★ Popular
Easy for BeginnersFile Selection Type
Batch Generate Favicons and App Icons
Create a ZIP archive containing app and web icon sets ranging from 16px to 1024px.
ImageIcon
Easy for BeginnersFile Selection Type
Image Collage & Merge
Arrange images in a grid in the order selected.
ImageID Photo
Easy for BeginnersFile Selection Type
Split Image into a Grid
Split an image into rows and columns and save the pieces as a ZIP of PNG files.
ImageCrop & Resize
Easy for BeginnersFile Selection Type
Crop Image to Circle
Crop the center into a circle and save it as a PNG with transparent corners.
ImageCrop & Resize
Easy for BeginnersFile Selection Type
Add Image Border
Add a border in your chosen color around a photo.
ImageCustomize
Easy for BeginnersFile Selection Type
Create Meme and Photo Captions
Add outlined Korean text to the top and bottom of a photo.
ImageCustomize
Easy for BeginnersFile Selection Type
Create GIF from Photos
Create an animated GIF from multiple photos in the selected order.
ImageID Photo
Easy for BeginnersFile Selection Type
Extract GIF Frames
Save all GIF frames as PNG files in a ZIP.
ImageFile Format
Easy for BeginnersFile Selection Type
Reverse GIF Playback
Reverse the order of frames along with their corresponding frame durations.
ImageCustomize
Easy for BeginnersFile Selection Type
Change GIF Speed
Change playback speed by adjusting frame display duration.
ImageCustomize
Easy for BeginnersFile Selection Type
Change GIF Loop Count
Set the number of GIF loops. Enter 0 to loop continuously.
ImageCustomize
Everything from file conversion to calculations and diagnostics in one place
REGOLITH is more than a collection of links. It provides functional web tools that take you from entering data and running tasks to reviewing and saving results. Original files remain unchanged, with results created separately. Each tool page explains supported formats, usage steps, and how to review results before you begin.
Getting Started Guide
Instructions for selecting files, configuring options, running tools, and saving results are available on a separate guide page and within each tool.
Detailed Task Descriptions
Provides format characteristics, recommended uses, guidelines for verifying calculation results, and precautions for handling sensitive files.