Compress JSON, CSV, JavaScript, and other file types with customizable loss levels.
⚠️
Important: Lossy compression permanently removes data to reduce file size. Always thoroughly test compressed files in your development and staging environments before using in production to ensure functionality remains intact.
📦
Drop file here or click to upload
Supported: JSON, CSV, JavaScript, HTML, CSS, SQL, XML, YAML, SVG, Markdown, Text
Max 10MB per file
Max 10MB per file
⏳ Analyzing file...
Compression Options
💡 Changes will automatically update the preview below. Adjust options to see their impact on compression.
Compression Preview
Minimal
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-
Safe optimizations only
Moderate
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Balanced approach
Aggressive
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Maximum compression
💡 Click a level above to see what changes
Compression Results
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Original Size
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Compressed Size
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Reduction
Optimizations Applied:
API Endpoints
POST /api/compress
- Upload and compress files
POST /api/compress/batch
- Compress multiple files (up to 10) in one request
- Returns summary statistics and individual results
POST /api/analyze
- Preview compression for a single file
POST /api/analyze/batch
- Preview compression for multiple files (up to 10)
- See all 3 compression levels before compressing
GET /api/options/:fileType
- Get compression options for file type
GET /api/download/:fileId
- Download compressed file
GET /api/manifest/:manifestId
- Download recovery manifest (shows what was changed)
GET /api/health
- Service health check
Batch API Examples
Compress multiple files in one request:
curl -X POST https://l0ss.com/api/compress/batch \ -F "files=@file1.json" \ -F "files=@file2.csv" \ -F "files=@file3.js" \ -F "loss_level=moderate"
Preview compression for multiple files:
curl -X POST https://l0ss.com/api/analyze/batch \ -F "files=@data1.json" \ -F "files=@data2.json" \ -F "files=@data3.json"
Response Format:
{
"status": "success",
"message": "Processed 3 files",
"summary": {
"total_files": 3,
"successful": 3,
"failed": 0,
"total_original_size": 15234,
"total_compressed_size": 8421,
"average_reduction": 44.7,
"processing_time_ms": 142
},
"results": [
{
"filename": "file1.json",
"status": "success",
"file_id": "file_abc123",
"original": { "size": 5234, "filename": "file1.json" },
"compressed": { "size": 2891, "reduction": 44.8 },
"download_url": "/api/download/file_abc123",
"recovery": {
"manifest_id": "rec_xyz789",
"download_manifest": "/api/manifest/rec_xyz789"
}
}
]
}