Ad specs library and creative build sheet
Ad Specs for Every Platform
Sizes, ratios, durations and file limits for every major platform. Tick the placements your campaign runs and get the fewest master assets your designer needs to produce, with the tightest limits already applied.
Loading the spec library…
How These Ad Specs Stay Accurate
Every requirement in the library is recorded against its official platform source with a last-verified date, so the provenance of any number can be checked before a file goes to production. The individual placement pages link straight to the official documentation.
The build sheet always applies the tightest limits among the placements a master covers: the smallest file size, the shortest duration window and the shared file formats, so the same file works for every placement listed under it.
Ad Specs by Platform and Placement
Every placement in one table. Search by platform, ratio or size; expand a row for the complete spec, the QA checklist and the official source.
The reference loads with the library.
Ad Specs FAQs
Which ad specs does the library cover?
Image, video and display specs for Meta, Google Ads, LinkedIn, TikTok, Reddit and standard IAB display sizes: aspect ratios, pixel dimensions, duration limits, file types and maximum file sizes. Each placement also has its own page with the full spec and a QA checklist.
What is a creative build sheet?
The list of master assets a designer needs to produce for a campaign. Many placements share the same shape, so the tool combines your selected placements into the fewest masters, and each one lists the tightest limits among them so the same file can be used everywhere.
How do you keep the specs accurate?
Every requirement is stored with its official source and a last-verified date, and we review records against the platform documentation as part of running paid media on these platforms daily. The source link on each placement page goes to the official reference.
Does it cover headline and text character limits?
The build sheet focuses on the asset itself: dimensions, ratios, durations and file limits. Text and character limits are listed on the individual placement pages where the platform enforces them.
Get the account reviewed before launch
A senior specialist reviews the account these ads will run in: wasted spend, conversion tracking and the budget decisions worth making before launch.