Limits

OpenPost Image Editor is a focused still-image editor.

Supported work

• Single-page images and designs with up to 35 ordered pages.
• PNG, JPEG, and WebP imports and exports.
• Solid, transparent, gradient, or image page backgrounds.
• Text, image, shape, paint, and group layers.
• Image crops, color adjustments, effects, masks, and background removal.
• Workspace templates, brand colors, and custom fonts.
• Browser-local public designs and saved workspace designs.

Not supported

Image Editor does not:

• edit video or create animation;
• use CMYK color or print units;
• add arbitrary SVG files or remote links as layers;
• mix several text styles inside one text layer;
• let several people edit the same design at the same time;
• expose low-level Image Editor operations through MCP.

Use Video Editor for video, motion, audio, and captions. Use Quick Cut for simple video cuts. Use a print design tool when the output requires CMYK, bleed, or physical units.

Publication limits

An exported file must still satisfy the selected social account's current limits. The composer checks file count, type, size, shape, and other provider rules before publishing.

See Media requirements for the rules OpenPost applies. Provider requirements can change, so the composer and connected-account readiness are authoritative for a specific post.