Drag-and-drop or browse for CSV, Excel, or JSON. The moment you select a file it loads into browser memory. No network request is made. No upload happens.
Your file stays on your machine from the first byte to the last.
Every tool — splitting, merging, deduplicating, converting — runs in an isolated Web Worker thread. Your CPU does the work, not a cloud VM.
27 tools. All client-side. Zero data egress.
The output file is assembled in memory and handed directly to your browser's download manager. It was never on a server to begin with.
No account required. No retention. No trace.
Standard CSV tools process your files on remote servers and typically retain them for 30–90 days per their terms of service. For files containing customer data, employee records, or financial information, that's a liability you're accepting silently.
SplitForge processes everything in a Web Worker thread in your browser tab. The file never reaches our servers. We have no access to it — by design.
Web Worker processing, zero transmission
Nothing stored because nothing uploaded
Healthcare data handled without cloud exposure
Fast local compute, large-file tolerance, and zero network exposure — measurable, not marketing.
2M+ rows processed in seconds on a standard Windows laptop — fully inside the browser.
Large CSV and Excel jobs stay usable without sending data to a queue or server.
Nothing gets uploaded, mirrored, synced, or retained anywhere outside the session.
No free trials. Transparent pricing. Free is genuinely free, Pro is for heavy individual use, and Business is there when teams need API and access control.