EARLY ACCESSAdmoji Ad Manager — your entire funnel from one prompt
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Facebook ad mockup generator.
Right here, in your browser.

Type your copy, drop in an image, and preview your ad as a Facebook-style feed post — then download it as a PNG for the client deck. Everything runs on this page: nothing you type or upload ever leaves your browser. Below the tool: the current feed-ad specs from Meta's own docs, and what to do once the mockup is approved.

UPDATED SEP 2026·FREE TOOL·RUNS 100% IN-BROWSER
01 / The tool

Build your mockup.

🔒Private by design. Your image is read locally by your browser and never uploaded to Admoji or any server. Close the tab and it's gone.
Live preview
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Choose an image above — it never leaves your browser. 1080 × 1080 (1:1) or 1080 × 1350 (4:5) works best.
Rendered on your machine — 1080px wide, deck-ready.

A mockup made here is for previewing and pitching creative — it's a close approximation, not an official Facebook rendering, and formats change. Check the live preview in Ads Manager and Meta's ad format guide before anything goes live.

02 / Why mockups

What an ad mockup generator is
actually for.

Nobody approves an ad from a spreadsheet row. "Primary text, column B" means nothing to a client — the same words sitting under a page name and avatar, above an image and a Shop Now button, suddenly read like an ad. That's the whole job of a mockup: make the creative decision visible before anyone opens Ads Manager.

In practice, that shows up in three places:

What a mockup is not for: predicting performance. A beautiful preview says nothing about whether the angle converts. That takes real creative, real variations, and real spend data — more on that in section 04.

03 / Specs cheat-sheet

Facebook feed ad specs.
Straight from Meta's docs.

These are Meta's published recommendations for a feed image ad, taken from their own ads guide (observed September 3, 2026). Meta revises formats regularly, so treat the guide itself as the source of truth on launch day.

SpecMeta's recommendation
File typeJPG or PNG
Aspect ratio4:5 recommended for feed image ads; 1:1 square remains a widely supported feed staple
Resolution1440 × 1800 px recommended at 4:5 (minimum width 600 px)
Primary text50–150 characters recommended
Headline27 characters recommended
DescriptionNo official character recommendation on the feed image spec page — it's often truncated or hidden, so keep it short and non-essential
Max file size30MB
Ratio tolerance3%

Source: Meta's ads guide, feed image ad spec page — observed September 3, 2026. The character counts under the tool's inputs track these recommendations live.

Two practical notes the spec sheet doesn't spell out. First, longer primary text gets collapsed behind a "See more" link in the feed — front-load the hook into the first line. Second, taller 4:5 creative buys more screen on mobile, which is where most feed impressions happen; that's why Meta recommends it. If you're deciding between the two toggles above, 4:5 is usually the better default for feed. For what goes inside the creative, see our Facebook ad creative best practices guide.

04 / After the mockup

Mockups show how it will look.
Admoji generates the actual creative.

Here's the honest limit of every ad mockup generator, this one included: it needs you to show up with the creative already made. The image, the primary text, the headline, the angle behind all three — the mockup just frames what you brought.

That's the part Admoji Ad Manager does. Paste your URL and it reads your live site — palette, typography, tone of voice, product imagery, the pain points buried in your own copy — then studies the ads already winning in your category from live Facebook ad libraries. One prompt later it generates the full funnel: scored angles, then creative for every stage, with Brand Identity Lock holding your exact colors, typefaces, and tone across the whole batch. Each creative ships with real copy attached — hook, audience, pain point, proof — so what lands in your export is a campaign, not a folder of pictures.

The two tools compose neatly: generate the creative in Admoji, drop your favorites into the mockup above for the client deck, get sign-off, ship. If you want the deeper walkthrough of how generation works, that lives on the AI ad generator page.

No trial, by design: Admoji Ad Manager is in early access with white-glove onboarding — your brand profile is pre-built from your website before you ever log in. Request access at admoji.com/ads and requests are reviewed within a day.
05 / FAQ

Common questions.

What is a Facebook ad mockup?
A realistic preview of how an ad would look in the feed — page name, primary text, image, headline, and CTA button laid out like a real post — before anything is built in Ads Manager. Teams use mockups to pitch clients, get stakeholder sign-off, and sanity-check copy length and image cropping before spending time in the ad platform.
Is this an official Facebook preview?
No. This tool produces a close approximation of a Facebook feed post for previewing and pitching creative — it is not an official Facebook rendering, and Meta changes ad formats regularly. Before launching, always check the live preview inside Ads Manager and the current specs in Meta's own ads guide.
Does my image get uploaded anywhere?
No. The whole tool runs in your browser. Your image is read locally by your browser and rendered on the page — it is never sent to Admoji or any server, and the PNG download is generated on your own machine. Nothing you type here is stored or transmitted either.
What's the difference between a mockup and generated ad creative?
A mockup shows how creative you already have would look in the feed. It doesn't produce the creative itself — the image, the copy, the angle. That's what Admoji Ad Manager does: it learns your brand from your URL, studies the ads winning in your category, and generates full-funnel creative locked to your colors, fonts, and voice. Mockup here, real creative there.
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Done previewing?
Generate the real thing.

Paste your URL, and Admoji learns your brand, studies your competitors' winning ads, and builds your entire funnel to match — creative worth mocking up.

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Sources

  1. Meta, "Traffic Image Ad Specs on Facebook Feed," Facebook Ads Guide — facebook.com/business/ads-guide. Observed September 3, 2026.
  2. Meta, "Facebook Ads Guide: Ad Format Specs & Recommendations" — facebook.com/business/ads-guide/update. Observed September 3, 2026.
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