Platform creative delivery

Reddit Image Ads · Feed
Creative Specifications

Published requirements, recommendations, and delivery guidance from the governed Cphere specification catalog.

Formats supported: Image Ads · Video Ads · Dynamic Product Ads
Primary campaign uses: Not specified by platform
Last verified: Aug 2, 2026
Recommended delivery package: Not specified by platform
Catalog status: Current

Published catalog 5Published August 2, 2026

Quick delivery checklist

What to send Cphere

Final platform-ready creative
Approved copy and CTA
Destination URL and tracking parameters
Brand and legal requirements

Canonical records

Placement specification

Image Ads

Published format-level guidance.

Current

Required

Not specified by platform

Placement-dependent

Not specified by platform

Cphere best practice

Not specified by platform

Feed

Direct link

Required

Headline Limit: 300 characters maximum; 100 or fewer recommended; 80 or fewer is the safer display limit
Destination Url: 268 characters
File Types: JPG · PNG · GIF
Maximum File Size: 3 MB

Aspect Ratios: 4:3 (1440x1080) cross-device · 1:1 (1080x1080) · 3:4 (1080x1440) · 4:5 (1080x1350) · 16:9 (1920x1080) — Any aspect ratio is accepted; off-spec assets may letterbox.
Thumbnail: JPG/PNG/GIF (converted to still), 3 MB maximum, 4:3 400x300 recommended; shown in conversation placement and compact view

Placement-dependent

Not specified by platform

Cphere best practice

Not specified by platform

Delivery detail

File, copy, audio, and destination requirements

File requirements

Not specified by platform

Copy requirements

Not specified by platform

Audio requirements

Not specified by platform

Tracking requirements

Not specified by platform

Landing-page requirements

Not specified by platform

Prohibited or unsupported elements

No prohibited-element list is published for this record.

Interface-aware delivery

Safe zones

No verified safe-zone diagram is published for this placement. Do not infer pixel-safe areas.

Clearly separated guidance

Recommended best practices

No additional Cphere best-practice copy is published for this record.

Source transparency

Sources and verification

Last verified: Aug 2, 2026. Platform requirements may change; check these official references before final delivery.

Image ad specificationsOfficial · Reddit for Business · 2026-08-02

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