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MP3 to Low Quality

Convert MP3 to a lower bitrate for smaller size

Click to upload file or drag and drop file here

Maximum file size: 50MB Supported formats: audio/mpeg

Key Facts

Category
Media
Input Types
file, select, checkbox
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

This tool converts MP3 audio files to a lower bitrate, reducing file size while maintaining acceptable quality. It's designed for efficient storage and sharing of audio content.

When to Use

  • •When you need to save storage space on devices like smartphones or MP3 players.
  • •When preparing audio files for faster uploading or streaming over slow internet connections.
  • •When reducing file sizes for email attachments or messaging apps with size limits.

How It Works

  • •Upload your MP3 file using the file selector.
  • •Choose a target bitrate from options like 64 kbps, 96 kbps, 128 kbps, or 160 kbps.
  • •Optionally adjust sample rate and audio channels, or enable metadata retention.
  • •Click convert to process the file and download the smaller MP3 output.

Use Cases

Compressing podcast episodes for easier distribution via email or social media.
Reducing music file sizes to fit more songs on portable devices with limited storage.
Optimizing audio files for web use to improve page load times and user experience.

Examples

1. Podcast Episode Compression for Email

Podcast Producer
Background
A podcast producer needs to send a 30-minute episode to a guest for review, but the original MP3 is 60 MB.
Problem
The file exceeds typical email attachment limits of 25 MB, making it undeliverable.
How to Use
Upload the MP3, select a bitrate of 96 kbps for clear voice audio, and keep metadata for episode details.
Outcome
The converted MP3 is about 25 MB, small enough to attach to an email without significant loss in spoken audio quality.

2. Music Library Size Reduction

Background
A user has a large collection of high-bitrate MP3s that are filling up their smartphone's storage.
Problem
The phone's storage is nearly full, preventing new apps or media from being added.
How to Use
Convert each MP3 to 128 kbps using the tool, ensuring metadata is retained for organization.
Outcome
The overall library size is reduced by approximately 35%, freeing up space while maintaining good audio quality for casual listening.

Try with Samples

audio, file
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token mp3
audio
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
preferred input family audio
audio
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
preferred input family audio
audio
Copyright-Free OPUS Audio Samples
Next-generation OPUS audio samples with superior compression and quality, featuring nature sounds and meditation music optimized for modern streaming
preferred input family audio
audio

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FAQ

What audio formats are supported for input?

Only MP3 files are supported; other formats are not accepted.

Will reducing bitrate affect audio quality?

Yes, lower bitrates decrease file size but may reduce audio fidelity. Choose a bitrate based on your quality needs.

Can I keep the original metadata like song titles?

Yes, enable the 'Keep Metadata' option to preserve ID3 tags such as artist and album information.

What is the maximum file size allowed?

Files up to 50 MB can be uploaded, as specified by the file limit.

How much smaller will the output file be?

Size reduction varies; for example, converting from 128 kbps to 64 kbps can roughly halve the file size.

API Documentation

Request Endpoint

POST /en/api/tools/mp3-to-low-quality

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
bitrate select No -
sampleRate select No -
channels select No -
keepMetadata checkbox No -

File type parameters need to be uploaded first via POST /upload/mp3-to-low-quality to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-mp3-to-low-quality": {
      "name": "mp3-to-low-quality",
      "description": "Convert MP3 to a lower bitrate for smaller size",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=mp3-to-low-quality",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]