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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Frequently used categories are listed first, with concise card descriptions.
Web Tool CategoriesRanked by actual successful usage in the last 90 days
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Video
45ToolsEasy for BeginnersFile Selection Type
Extract Video Frames
Extract the specified number of frames per second and save them as a ZIP of JPG images.
VideoFrames & Thumbnails
Easy for BeginnersFile Selection Type
GIF to Video
Convert animated GIFs into MP4 videos.
VideoFormat & Audio
Easy for BeginnersFile Selection Type
Automatically Generate Video Subtitles
Uses Whisper to recognize speech in videos and generate SRT subtitles. Local translation and bilingual subtitles are also supported for Korean and English speech.
VideoSubtitles
Easy for BeginnersFile Selection Type
Convert SRT/VTT Subtitles
Convert subtitles between SRT and WebVTT formats.
VideoSubtitles
Easy for BeginnersFile Selection Type
Burn Subtitles into Video
Select a video and an SRT or VTT file to burn subtitles into the video.
VideoSubtitles
Easy for BeginnersFile Selection Type
Shorten Silent Sections in Videos
Automatically shorten silent sections at the beginning, middle, and end.
VideoMute & Audio
Easy for BeginnersFile Selection Type
Automatically Convert to Vertical Short-Form Video
Creates a 1080×1920 vertical video using center, face, or full-body detection. Detection accuracy varies depending on the composition.
VideoAspect Ratio & Layout
Easy for BeginnersFile Selection Type
Extract Video Thumbnails
Save a frame from the desired point in the video as a JPG thumbnail.
VideoFrames & Thumbnails
Easy for BeginnersFile Selection Type
Combine Multiple Videos into One Screen
Arrange up to four videos in a 2-way or 4-way split-screen layout.
VideoAspect Ratio & Layout
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.