Instantly crop and resize images for billboards, outdoor advertising, digital ads and social media. All standard ad sizes supported. No software to install.
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Reference specs for every major outdoor, digital, and social advertising format.
The standard highway and major road billboard. Largest and most impactful format. Viewed at 50–500ft distance.
Common in urban areas and secondary roads. High-traffic pedestrian and vehicle visibility at closer distances.
Smaller format used in urban neighborhoods and near-road locations. Effective for local and neighborhood campaigns.
Close-viewing format at pedestrian level. Requires higher DPI (150–300) due to proximity. Portrait orientation standard.
Full HD 16:9 format. Minimum resolution for most digital bulletin boards. 72 DPI, RGB color mode.
4K display format used by premium digital OOH networks. Check with operator for exact specs and file size limits.
Portrait 9:16 format for digital transit shelters, retail screens, and vertical outdoor displays.
Most widely used digital ad unit. Highest inventory and best performance across desktop and mobile.
Classic header/footer banner unit. Standard for desktop web advertising at the top or bottom of pages.
Tall sidebar unit. Effective for page takeovers and sidebar placements on content-heavy sites.
Premium high-impact unit. Large canvas drives higher engagement rates. Often sold as premium inventory.
Large desktop display unit for premium homepage and top-of-page placements. High visibility format.
Universal square format. Instagram feed, Facebook feed, Twitter. Safe crop for all platforms.
Tall portrait format for Instagram and Facebook feed. Occupies more screen space, increasing engagement.
Full-screen vertical format for Instagram Stories, TikTok, YouTube Shorts, and Snapchat.
Landscape format for YouTube thumbnails, Twitter/X, LinkedIn, and Facebook cover photos.
Resolution and DPI. Billboard viewing distances mean that DPI requirements are lower than most people expect. A 14×48ft bulletin viewed at 100+ feet works at 25–75 DPI at actual print size. However, print vendors typically request files at a scaled ratio — for example, 1 inch = 1 foot — at 300 DPI. This means your file needs to be 14×48 inches at 300 DPI, which equals a 4,200×14,400 pixel file at minimum.
Color mode. Print billboards require CMYK color mode. Digital billboards display in RGB. Always confirm with your vendor before preparing files. Submitting an RGB file for print can result in color shifts — particularly in saturated reds and oranges — after the CMYK conversion is applied by the printer.
File formats for print. TIFF and PDF/X-1a are the preferred formats for outdoor advertising print. Both support CMYK and preserve color accuracy. High-quality JPEG (quality 10/12 or higher in Photoshop) is also accepted by most vendors. Avoid PNG for print — it is an RGB format and does not support CMYK profiles. EPS is accepted but largely being phased out in favor of PDF.
Bleed and safety margins. Most outdoor print vendors require a bleed area (extra image beyond the trim edge) of 0.5–1 inch at scale. Keep critical content (text, faces, logos) within the safety zone — typically 1–2 inches from the edge at scale. Our resizer handles bleed calculations automatically based on vendor templates.