This page offers Snap / Story and Ad presets at 1080×1920 pixels (9:16). It creates a JPEG in your browser; it does not post the image to Snapchat. Check the current requirements for the placement you plan to use before publishing.
Snap / Story and Ad are both 1080×1920 pixels (9:16) in this tool. Check Snapchat's latest specifications for your placement.
No. Fit keeps the complete source image and fills the remaining canvas with white padding. Fill crops to the preset and lets you adjust the crop area.
Stretch draws the source across the full 1080×1920 frame, which can change its proportions. Review the preview for distortion.
No. The resize runs locally in your browser and downloads a JPEG; it does not send the image to Snapchat.