FreeFileConvert uses tuned encoding for SLK to OTS conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Seamless workflow
Upload SLK files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized OTS results on any device you rely on.
Batch support for teams
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent OTS audio with dependable progress tracking.
About SLK
How to open SLK files
Microsoft Excel
About OTS
How to open OTS files
Apache OpenOffice LibreOffice
How to convert SLK to OTS
STEP 1
Upload your document file in the SLK format from your device, Dropbox, or Google Drive.
STEP 2
Select OTS as the output format and click Convert. Adjust optional settings if needed.
STEP 3
Download the converted document file. Each file stays available for up to 5 downloads.
More SLK and OTS options
Convert other files to OTS
Explore popular source formats that convert beautifully into OTS.