Free Online Tools

Free online tools for image, audio, and video processing
All processing is done locally, files are not sent to servers

WAV → MP3 Converter

Convert WAV and other audio files to MP3 format. Uses high-quality encoder

  • WAV, FLAC, M4A, OGG → MP3
  • Bitrate & sample rate settings
  • High-quality LAME encoder
  • Batch conversion & ZIP download

MP3 → WAV Converter

Convert MP3 and other audio files to WAV format. Batch processing support

  • MP3, M4A, OGG, FLAC → WAV
  • Drag & drop support
  • Batch conversion & ZIP download
  • Complete local processing

MP3 Cutter

Cut out specific parts of MP3 files. Easy audio file editing

  • Visual waveform editing
  • Fade in/out function
  • Volume normalization
  • MP3/WAV output formats

MP4 → MP3 Converter

Extract audio from lecture/meeting videos. Optimized for NotebookLM

  • Noise reduction & voice enhancement
  • Volume normalization for better AI recognition
  • Ideal for lectures & seminars
  • Complete local processing

Audio Compressor

Control audio dynamic range. Equalize volume for vocals and podcasts

  • Professional compression settings
  • Real-time preview
  • Visual meter display
  • Presets (Vocal/Instrument/Broadcast)

JPEG/PNG → WebP Converter

Convert images to next-gen WebP format. Significantly reduce file size

  • Auto-optimize at 80% quality
  • Auto-resize if > 1448px
  • Batch conversion
  • ZIP download support

WebP → JPEG/PNG Converter

Convert WebP files to JPEG or PNG format. Transparent background handling and quality adjustment

  • WebP → JPEG/PNG selection
  • Transparent background handling (white/black/custom)
  • Quality adjustment
  • Batch conversion & ZIP download

Image Resizer

Resize images to specified pixel dimensions. Auto aspect ratio calculation

  • Auto aspect ratio calculation (16:9, 4:3, etc.)
  • PNG/JPEG/WebP output
  • 0-100% quality adjustment
  • Batch resize & ZIP download

Image Cropper

Easily crop unwanted parts of images. Perfect for screenshot editing

  • Direct paste from clipboard
  • Mouse drag selection
  • 8-way handle adjustment
  • PNG/JPEG/WebP output

Image Grid Layout Tool

Arrange multiple images evenly in a grid layout. Perfect for ID photos and contact sheets

  • Windows XP Photo Wizard style
  • ID photos & contact sheets
  • Flexible layout settings
  • JPEG/PNG/WebP output

Margin Remover

Auto-detect and remove white margins from JPEG images. Precise processing with Flood Fill algorithm

  • Auto-detect white background from corners
  • Adjustable threshold
  • Batch processing
  • Original files preserved

Distortion Corrector

Correct perspective of images taken at an angle. Auto-detection feature included

  • Edge auto-detection
  • 4-point precision correction
  • Document & sign straightening
  • High-quality WebGL processing

Image Color Picker

Extract colors from images and get RGB/HEX/HSL values. Easy color info copy with click

  • RGB/HEX/HSL format support
  • One-click copy
  • Color history (10 colors)
  • Clipboard paste support

Text Replacer

Batch replace multiple strings. Real-time replacement preview

  • Up to 6 replacement rules
  • Real-time replacement & statistics
  • Individual ON/OFF toggle
  • Copy & download functions

MIME Type Checker

Check for mismatches between file extensions and MIME types. Determine true file format

  • Extension/MIME mismatch detection
  • File signature analysis
  • Image preview function
  • All file formats supported

SWF Player

Play Adobe Flash (SWF) files in your browser. Support for retro games and animations

  • Uses Ruffle emulator
  • No Flash Player needed
  • Complete local processing
  • Error handling support

Features of web2ls.net

Complete Privacy Protection

All processing is done in your browser. No image, audio, or video data is sent to our servers

Fast Processing

Utilizing the latest web technologies for high-speed processing of large files

Multi-Device Support

Works on all devices including PCs, tablets, and smartphones

Simple Operation

Easy drag & drop operation. No technical expertise required

How to Use

  1. Select a Tool
    Click on the tool you want to use from the list above
  2. Upload Files
    Drag & drop or use the file selection button to load files
  3. Adjust Settings
    Adjust output format, quality, and other settings as needed
  4. Process
    Click the execute button to start processing
  5. Download
    After processing, download individually or as a ZIP file