Fast workflow
Designed to reduce friction with direct upload, quick processing, and one-click export.
CONVERTCRAFT V3.0: THE NEXT GENERATION
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Experience Sub-2s processing speeds with our brand-new V3.0 engine. We've rebuilt everything to give you a Prime Experience where your files never leave your device.
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CUSTOM SAAS & AUTOMATION SERVICES
Special pricing for agencies and startups. We build custom tool suites, API integrations, workflow automation and mobile app development on top of the ConvertCraft engines.
Open Split & join files, add your file, then choose the target output and run conversion.
This tool is optimized for archive handling and works best with * as inputs.
When processing completes, download the result in * and verify quality before sharing.
Split & join files is a privacy-first utility for fast archive handling. It helps you move from * to * with consistent output quality.
Designed to reduce friction with direct upload, quick processing, and one-click export.
Files are handled in an isolated processing flow with minimal retention and clear user controls.
Outputs are tuned for real use cases across *.
A predictable sequence keeps conversion stable across devices and file sizes.
Split & join files accepts * and exports *.
The pipeline is designed for privacy-first processing with clear user control over inputs and outputs.
Use high-quality source files, choose the closest matching target format, and avoid repeated reconversion cycles.
Split & join files follows a deterministic conversion flow so results are repeatable and easier to troubleshoot when a file behaves unexpectedly.
Split large files into smaller parts or reassemble split parts back into one file. 100% local.
All processing is done in your browser using the File API. No data is uploaded.
Splits any file into equal-sized chunks for email attachments, cloud upload limits, or USB transfer. Reassemble parts in the exact original order automatically.
When you need to send a large file through a service with size limits, or reassemble previously split files.
See the detailed comparison guide or try a related tool: