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
Popular Tools
466ToolsEasy for BeginnersFile Selection Type
Repair PDF
Rebuild the structure of a damaged or improperly saved PDF.
PDF & DocumentsRecover
Easy for BeginnersFile Selection Type
Convert to PDF/A for long-term archiving
Convert PDFs to PDF/A format for long-term archiving.
PDF & DocumentsPDF/A
Easy for BeginnersFile Selection Type
Flatten PDF
Flatten annotations, form fields, and signatures to preserve their appearance.
PDF & DocumentsFlatten
Easy for BeginnersFile Selection Type
Create fillable PDF forms
Enter field names to create a fillable PDF form.
PDF & DocumentsForm
Easy for BeginnersFile Selection Type
Auto-Fill PDF Forms
Fills PDF form fields with JSON values and saves the result as a new document.
PDF & DocumentsForm
Easy for BeginnersFile Selection Type
Create a PDF from scanned images
Combine multiple photos or scanned images into one PDF.
PDF & DocumentsConvert Images
Easy for BeginnersFile Selection Type
Convert HTML to PDF
Convert HTML pages into PDF documents.
PDF & DocumentsConvert PDF
Easy for BeginnersFile Selection Type
Convert EPUB to PDF
Convert EPUB eBooks into PDF files.
PDF & DocumentsConvert PDF
Easy for BeginnersFile Selection Type
Convert ZIP Documents to PDF
Finds PDFs, images, and Office documents inside a ZIP file and combines them into a single PDF.
PDF & DocumentsConvert PDF
Easy for BeginnersFile Selection Type
Convert PDF to Markdown
Convert PDF text to Markdown with page titles included.
PDF & DocumentsExtract Text
Easy for BeginnersFile Selection Type
Translate PDF
Translates PDF text using LibreTranslate or Argos Translate.
PDF & DocumentsTranslate
Easy for BeginnersFile Selection Type
Automatic PDF Summarization
Extract key sentences from a PDF locally and create a summary document.
PDF & DocumentsSummary & Questions
Easy for BeginnersFile Selection Type
Find Answers in PDF
Finds and summarizes PDF paragraphs most relevant to the key terms in a question.
PDF & DocumentsSummary & Questions
Easy for BeginnersFile Selection Type
Remove PDF Metadata
Removes PDF metadata such as author, title, and creator application.
PDF & DocumentsRemove Personal Information
Easy for BeginnersFile Selection Type
Upscale images 2x or 4x
Uses AI upscaling when Real-ESRGAN is available, or high-quality Lanczos upscaling otherwise.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Sharpen Blurry Photos
Enhance blurry edges to sharpen photos.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Remove Photo Noise
Reduce speckle noise in high-ISO photos.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Remove Glare & Haze
Automatically correct low contrast and hazy images.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Remove Objects from Photos
Restore a rectangular area selected by coordinates using surrounding pixels.
ImageRemove Objects & Text
Easy for BeginnersFile Selection Type
Remove Text from Photos
Select a rectangular area containing text and remove it using inpainting.
ImageRemove Objects & Text
Easy for BeginnersFile Selection Type
Change Selected Color
Replace pixels similar to the selected color with your desired color.
ImageColor & Correction
Easy for BeginnersFile Selection Type
Automatic Face Blurring
Detect and automatically pixelate front-facing faces in photos.
ImageAutomatic Mosaic Blur
Easy for BeginnersFile Selection Type
Automatic License Plate Pixelation
Detect potential vehicle license plates and apply mosaic blurring.
ImageAutomatic Mosaic Blur
Easy for BeginnersFile Selection Type
Restore Old Photos
Restores old photos by adjusting noise, contrast, and sharpness together.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Colorize Black-and-White Photos
Analyze grayscale tones to create a color image using the selected color tint.
ImageRestore & Sharpen
Easy for BeginnersFile Selection Type
Automatic Passport and ID Photo Sizing
Center-crop images to South Korean passport, 3×4, or U.S. passport photo dimensions.
ImageID Photo
Easy for BeginnersFile Selection Type
White Background for Product Photos
Detect the background around a product and replace it with white.
ImageProduct Photo
Easy for BeginnersFile Selection Type
Batch Enhance Multiple Photos
Applies noise reduction, automatic contrast adjustment, and sharpening to multiple photos, then saves them as a ZIP file.
ImageBatch Correction
Easy for BeginnersFile Selection Type
Bulk Generate Standard Thumbnail Sizes
Creates images in YouTube, OG, square, portrait, and story formats all at once.
ImageIcon
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
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.