Your files stay on your device
File processing runs in your browser. Documents are not uploaded to our servers. The site may download processing engines and send usage or feedback events without file contents.
How we handle your dataLaboratorU
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.