https://convertio.co/ offers a free tier for file conversion with the following limits:
- Max file size: up to 1 GB per file
- Max number of conversion credits: 10 credits per 24 hours
- Max number of concurrently launched conversions: 10
There are no other restrictions. If you exceed any of these limits, you will see an option to purchase one of our premium plans for file conversions.
Please note that we have different free-tier limits for text recognition (OCR).