LaboratorU
Compression
Local image, gzip, Base64, and data URL size tools.
Image CompressorCompress one image locally with a browser canvas output.Gzip SizeEstimate gzip-compressed text size locally with the browser CompressionStream API.Base64 SizeEstimate Base64 expansion and decoded byte size locally.Data URLInspect MIME type, encoding, and payload size for data URLs locally.ZIP InspectorInspect ZIP metadata, compression methods, encrypted entries, and risky paths locally.