How to Use the Facebook Ad Mockup Generator, Step by Step

Mockup a Facebook Feed ad in two minutes

Turn plain ad copy and one image into a pixel-accurate Facebook Feed ad mockup in the browser — free, no login, no watermark. The Facebook Ad Mockup Generator renders the full feed card (circular page avatar, page name, "Sponsored" label, primary text, image, headline, CTA button and engagement row) and updates it on every keystroke. There is no submit button and nothing to install.

We built it for the people who usually get asked for a client-ready visual at short notice: small-business owners, freelance marketers and agency creatives who do not want to open Photoshop or connect a Facebook account. Uploaded images are read client-side with FileReader and never leave your browser, which matters if you are mocking up a client's unreleased product shot.

The page loads with a complete demo already rendered: page name "Bloom & Co.", primary text demo copy, website bloomandco.com, headline "Spring Sale — 30% Off Everything", CTA "Shop Now", placeholder artwork, plus 1.2K likes, 84 comments and 32 shares. Change one field and you can see exactly how the card reflows before you commit your own assets.

Step by step: from blank fields to PNG

Step 1: open the tool page — no signup, no Facebook login. Step 2: type your copy into the five text controls — Page Name (max 40 characters), Primary Text (max 300), Website (max 60, auto-uppercased), Headline (max 90) and a CTA from the dropdown. Step 3: upload a page avatar if you want one in place of the placeholder monogram; it is center-cropped into a 40x40 circle automatically.

Step 4: upload the ad image — a single PNG or JPG up to 15 MB — and pick the frame ratio. Step 5: choose the export background (White, Light Gray, Dark or Transparent) and optionally edit the Likes, Comments and Shares values. Step 6: click Download PNG to export the card at 2x resolution.

In our testing, the whole sequence takes about the time it takes to paste copy from a doc — the only step that ever slowed us down was hunting for an image with enough headroom to survive the crop. If you plan to send a screen-recorded walkthrough of the mockup to a client, Compress Video Online Under 10mb handles that side of the handoff.

Where the character limits change your copy

The Primary Text field accepts up to 300 characters, but the feed card collapses it after three lines — so anything past roughly the first two sentences is hidden behind "See more". Put your hook and offer in the opening lines and treat the rest as backup for people who expand the post.

The Website field is auto-uppercased, so typing bloomandco.com renders as BLOOMANDCO.COM on the card. That is worth checking, because a long URL plus a long headline is what usually pushes the layout into an awkward wrap. Page Name is capped at 40 characters and Headline at 90, but the default headline "Spring Sale — 30% Off Everything" is only 33 characters and reads cleanly — shorter almost always looks better in the feed.

The CTA dropdown previews eight buttons as of 2026: Shop Now, Learn More, Sign Up, Book Now, Contact Us, Download, Get Offer and Apply Now. The default is Learn More. Pick the one that matches your actual landing page, not the one that sounds most exciting.

Choose the right image ratio and background

Three frame ratios are available: Square 1:1 (the default), Portrait 4:5 and Landscape 1.91:1. Your image is fitted with object-fit cover, which means it fills the frame and crops the overflow rather than letterboxing. Upload something larger than the final frame so the 2x PNG export stays sharp.

The avatar is optional. Skip it and the tool draws a monogram placeholder, which is often better for a mockup than a low-resolution logo stretched into a circle. Both upload fields accept one PNG or JPG at up to 15 MB, and the Replace and Remove buttons affect the ad image only.

Background choice is about where the image will live. White is the everyday default, Light Gray separates the card from a white document or slide, Dark suits a dark-mode screenshot, and Transparent is what you want when dropping the mockup into a deck or a composited layout. All four export as high-resolution PNG.

Engagement numbers, and why honesty matters

Likes, Comments and Shares are free-text fields capped at 8 characters each and rendered exactly as typed, so "1.2K" works as well as "1200". Clear any field and that metric disappears from the card entirely — a clean way to preview a brand-new post that has no engagement yet.

Treat those numbers as design placeholders. A mockup showing 1.2K likes is a layout element, not evidence of performance, and presenting invented engagement as a forecast is the kind of thing that damages trust with a client. If you are handing the PNG to someone who was not in the room, say plainly that the figures are illustrative.

The same applies to the mockup as a whole. It shows how type, image and button sit together in the feed; it does not predict click-through rate, cost per result or how Facebook's delivery system will treat your creative.

Can you use this mockup to run a real ad?

No. The downloadable PNG is a static image for reviews, decks, portfolios and landing pages — it is not a file you upload to run a campaign. To actually publish a Facebook Feed ad you build it in Meta Ads Manager, where the system supplies the avatar, page name and "Sponsored" label at render time.

The mockup is a close visual approximation rather than a guarantee of the live layout. Meta tweaks feed rendering regularly, so check current placements and asset specs in the Meta Ads Guide before you brief a designer or resize final creative. The PNG specification from the W3C is the reference point if you need transparency preserved through a design pipeline.

For multi-platform campaigns, pair this with the Instagram Profile Mockup Generator so a client sees the same creative in both feeds, and browse the rest of the free online tools on OnlineFree.app for the other assets a pitch usually needs.

References

• Meta Ads Guide
• W3C PNG Specification (Third Edition)