SWF to GSRT Converter
Extract Grandstream GSRT audio from Flash SWF
Flash to VoIP Audio
Extract sounds from SWF Flash files and convert them to GSRT for use as ringtones on Grandstream VoIP phones.
Grandstream Ready
The GSRT output is formatted specifically for Grandstream devices — upload it directly to your VoIP phone.
Online Conversion
Our servers produce the GSRT from your SWF. No VoIP software or Flash Player needed locally.
How to convert SWF to GSRT
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose gsrt or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your gsrt file right afterwards
About formats
Frequently Asked Questions
GSRT is the ringtone and audio format for Grandstream VoIP phones. Convert SWF audio for custom ringtones on Grandstream devices.
Upload the GSRT to your Grandstream phone via its web interface to set it as a custom ringtone or hold music.
GSRT is specific to Grandstream VoIP devices. For other phone systems, different audio formats may be required.
GSRT uses telephony-grade audio quality optimized for the speakers in Grandstream VoIP phones and devices.
No. The SWF is decoded on our servers. You only need a browser to perform the conversion.