Reddit Ads · reference · checked

Reddit Ad Specs & Formats (2026)

Reddit image ads take JPG, PNG or GIF files up to 3 MB, and Reddit recommends 1440 × 1080 px (4:3) for every device. Video ads take MP4 or MOV up to 1 GB, 2 seconds to 15 minutes, and every headline runs up to 300 characters. Below: the specs for every format, copied from Reddit's own documentation, with Reddit's hard limits and its recommendations in separate columns, and the places where Reddit's own pages disagree.

See all formats Check your file
Formats
Self-serve: image, video, carousel, free-form and interactive (beta) ads, plus catalog product ads and lead gen. Takeovers only through Reddit's sales team.
Image
JPG, PNG or GIF up to 3 MB; 1440 × 1080 px (4:3) recommended, with 1:1, 3:4, 4:5 and 16:9 recommended on mobile.
Video
MP4 or MOV up to 1 GB, 2 seconds to 15 minutes, 30 fps; 5–30 seconds recommended; no 9:16 in standard ads.
Carousel
2–6 image cards up to 20 MB each (GIFs 3 MB), a 50-character caption and a URL per card.
Text
Headline 300 characters (100 or fewer recommended), destination URL 268, display URL 100, one of 23 CTA buttons.
Placements
Every ad runs in the feed; all but interactive and collection ads can also run in conversation threads.

By Yulii Parfonov, service lead for Reddit Ads at Verticality · Checked against Reddit's Help Center and business.reddit.com on · Next check: January 2027

The short version, one row per format. Each name links to its full spec table.

Reddit ad formats and sizes at a glance

Reddit ad formats with file limits, recommended sizes, text limits and placements
Format Media and file limit Recommended size Text Placement
Image JPG, PNG, GIF · 3 MB 1440 × 1080 (4:3) Headline 300 Feed, conversation
Video MP4, MOV · 1 GB · 2 s–15 min · 30 fps 4:3 or 16:9; 4:5 on mobile Headline 300 Feed, conversation
Carousel 2–6 cards · 20 MB each (GIF 3 MB) 4:5, 4:3 or 16:9, one ratio Headline 300, caption 50 per card Feed, conversation
Free-form 20 images (10 MB), 5 videos (1 GB) ≥ 1,000 px wide Headline 300, body 40,000 Feed, conversation
Interactive (beta) JPG, PNG · 3 MB Mobile 816 × 1024, desktop 1400 × 1024 Quiz, poll or countdown limits Feed only
Product / DPA Catalog images ≥ 500 × 500 · 20 MB 1:1 Headline under 300 Feed, conversation
Collection Hero card + 4–5 products Not published Headline under 300 Feed only
Lead gen (beta) Image or video specs As image or video Privacy policy link required Per the ad format
Max campaigns ≤ 20 images (10 MB), ≤ 10 videos (100 MB) 1:1, 3:4, 4:5, 4:3, 16:9 3–15 headlines Any placement
Takeovers Image or video; sidebar 150 KB Feed 1440 × 1080; sidebar 1080 × 1920 Headline 300 Home, Popular, community feeds, sidebar

Sizes in pixels. Values from Reddit's Ad Unit Specifications and the spec article of each format, checked .

Before you upload: the same limits as the tables, applied to your file.

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Image ad · Reddit's limit, then Reddit's recommendation

Reddit image ad specs

An image ad is a headline, one image and a destination URL. Reddit takes JPG, PNG or GIF files up to 3 MB and recommends 1440 × 1080 px (4:3) as the one size for every device.

Reddit image ad specs: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
File type JPG, PNG or GIF —
File size Up to 3 MB —
Aspect ratio Any ratio is accepted; other ratios may be letterboxed 4:3 · 1440 × 1080 px on all devices
Mobile sizes — 1:1 · 1080 × 1080, 3:4 · 1080 × 1440, 4:5 · 1080 × 1350, 4:3 · 1440 × 1080, 16:9 · 1920 × 1080 px
Desktop sizes — 4:3 · 1440 × 1080, 16:9 · 1920 × 1080 px
Minimum dimensions Not published by Reddit —
Headline 300 characters 100 or fewer; put the point in the first 80
Destination URL 268 characters, required, HTTPS —
Display URL 100 characters, same domain as the destination URL (unless you use a click tracker) —
Call-to-action button Optional, one of 23 (list below) —
Thumbnail JPG, PNG or GIF (shown as a still), up to 3 MB; generated from the main image unless you upload one 4:3 · 400 × 300 px (1:1 · 300 × 300 and 16:9 · 400 × 225 also accepted)
Where the thumbnail shows Compact view and conversation placement only —
Objectives Awareness and consideration, traffic, sales, app promotion, lead generation —
Comments Off unless you tick "Allow comments" —
4:3 · 1440 × 1080 all devices 16:9 · 1920 × 1080 1:1 · 1080² 4:5 3:4 1080 × 1350 1080 × 1440
Reddit's recommended image ad sizes to scale. The 4:3 frame is the one Reddit recommends for every device; the others are its mobile sizes (16:9 also on desktop).

Reddit's pages: Image ad specifications · Ad unit specifications · checked

Video ad · Reddit's limit, then Reddit's recommendation

Reddit video ad specs

A video ad is a headline and a video. Reddit takes MP4 or MOV files up to 1 GB, 2 seconds to 15 minutes long at up to 30 fps, and recommends 5–30 seconds.

Reddit video ad specs: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
File type MP4 or MOV (ProRes not supported) —
File size Up to 1 GB (Max campaigns: 100 MB) —
Length 2 seconds to 15 minutes 5–30 seconds
Frame rate Up to 30 fps —
Aspect ratio, all devices 1:1 · 1200 × 1200 and 3:4 · 900 × 1200 px accepted 4:3 · 1440 × 1080 or 16:9 · 1920 × 1080 px
Mobile sizes — 1:1 · 1200 × 1200, 3:4 · 900 × 1200, 4:5 · 1200 × 1500, 4:3 · 1440 × 1080, 16:9 · 1920 × 1080 px
Vertical 9:16 Not listed for standard video ads (only premium Video Spotlight and the takeover sidebar) —
Thumbnail JPG, PNG or GIF, up to 3 MB; shown before the video plays Same ratio as the video
Headline 300 characters 100 or fewer; put the point in the first 80
Destination URL 268 characters, optional —
Playback Autoplays in the feed (users can turn autoplay off), sound off by default. On desktop and mobile web a click plays it; in compact view a click opens your landing page; in the app a click opens the video next to your landing page —
Captions and branding — Closed captions whenever possible; show the brand in the first three seconds
Billing CPM, or CPV for 6-second views (15-second views in beta), with a $0.01 minimum CPV bid; view goals count in the feed only —
Replacing the video later Resets the post: its comments and upvotes are lost —

Reddit's pages: Video ad specifications · Creative best practices · Ad types comparison · checked

Free-form ad · Reddit's limit, then Reddit's recommendation

Reddit free-form ad specs

A free-form ad is a rich-text post written like a Reddit post: up to 40,000 characters, 20 images and 5 videos, with inline links. A click opens the post, not a landing page.

Reddit free-form ad specs: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
Body text Up to 40,000 characters of rich text Keep 3–6 lines of plain text for the feed preview
Headline 300 characters —
Images Up to 20; JPG, PNG or GIF; up to 10 MB each At least 1,000 px wide; 1:1 · 1200 × 1200, 4:3 · 1440 × 1080 or 16:9 · 1920 × 1080 px
Videos Up to 5; MP4 or MOV; up to 1 GB, 30 fps 50–100 MB, 5–30 seconds; 1:1, 4:5, 4:3 or 16:9
Caption 50 characters per image or video —
Thumbnail Optional; JPG or PNG up to 3 MB. Without one the ad shows no media in feeds 400 × 300 or 300 × 300 px
Links Inline links in the body; no destination URL field, and Reddit lists no CTA button for this format —
Formatting Bold, italic, strikethrough, superscript, headings, lists, quotes, spoilers, images, GIFs, video —
Objectives Awareness and consideration, traffic —
Where to build it — In Ads Manager rather than by promoting a post, so the thumbnail shows

Reddit's pages: Free-form ad specifications · About free-form ads · checked

Interactive ad (beta) · Reddit's limit, then Reddit's recommendation

Reddit interactive ad specs (beta)

Interactive ads are small apps served as ads, built from three templates: countdown, quiz and poll. They are in beta, run in the feed only, and only with the awareness or traffic objective.

Reddit interactive ad specs (beta): Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
Availability Beta; Standard campaigns with the awareness and consideration or traffic objective; feed placement only —
Headline / destination URL 300 / 268 characters —
Not supported Display URL, disclaimer text, thumbnail —
Images JPG or PNG, up to 3 MB Logo 1:1 · 512 × 512; mobile background 4:5 · 816 × 1024; desktop background 4:3 · 1400 × 1024 px
Quiz Title 60 characters; 2–4 questions of 95; 2–4 answers of 60 per question; 2–4 outcomes (title 20, description 120); CTA 20 —
Poll 1 question of 70 characters; 1–5 answers of 30; CTA 30 —
Countdown Timer text and background as hex colours; English or Spanish; 12 time zones —
Custom apps Managed advertisers only —

Reddit's pages: Interactive ad specifications · About interactive ads · checked

Product, DPA and collection ads · Reddit's limit, then Reddit's recommendation

Reddit product ad, DPA and collection ad specs

Product ads look like image or carousel ads with a price and description pulled from your catalog. Dynamic Product Ads (DPA) pick the products for each viewer; collection ads add a hero card above 4–5 products.

Reddit product ad, DPA and collection ad specs: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
Products per ad Image: 1 · Carousel: 2–6 · Collection: 4–5 plus an uploaded hero card —
Headline Under 300 characters —
Caption The product's description or price; a sale price shows next to the struck-out original —
Placements Image and carousel: feed and conversation · Collection: feed only, and in DPA only when prospecting —
DPA image — 1:1, at least 500 × 500 px
Catalog image At least 500 × 500 px, up to 20 MB, JPG or PNG —
Catalog title / description Up to 300 / 5,000 characters Titles over 35 characters may be cut; descriptions of 180 or fewer
Required catalog fields id, title, description, link, image_link, price —
Catalog files UTF-8 CSV, TSV or XML (RSS 2.0) up to 200 MB, or a scheduled feed (HTTPS, FTP, SFTP, Google Sheets) —
Catalog limits 10 catalogs per business, up to 100,000 products, 1,000 product sets —
DPA tracking Pixel or Conversions API sending ViewContent, AddToCart and Purchase with product IDs that match the catalog —
Not allowed in product ads Alcohol, prescription drugs, cannabis, CBD, gambling —

Reddit's pages: Product ads · Dynamic product ads · Catalog requirements · checked

Lead generation ad (beta) · Reddit's limit, then Reddit's recommendation

Reddit lead gen ad specs (beta)

Lead generation runs on image and video ads. Since 6 October 2026 Reddit sends leads either to your own landing page or to a form, with routing to your CRM; Reddit's terms still call lead gen ads a beta product.

Reddit lead gen ad specs (beta): Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
Ad formats Image, video —
Where the lead is captured A form on your website, or Reddit's pop-up form with the email filled in automatically (both described by Reddit; see "Where Reddit's pages disagree") —
Form fields Reddit names email, name and phone number as examples; it publishes no full field list or custom-question limit —
Privacy A link to your privacy policy in every lead gen ad, and a line telling people their data goes to you —
Lead data Available to you for up to 90 days —
Goals Sign-ups, leads, clicks —
CRM HubSpot integration in open beta; Max campaigns available for lead generation (6 October 2026) —

Reddit's pages: About lead generation ads · Lead gen ads terms · Reddit lead gen ads · checked

AMA, reminder ads, Redditor Highlights, app promotion · Reddit's limit, then Reddit's recommendation

AMA ads, reminder ads, Redditor Highlights and app ads

Four formats with their own rules: AMA ads promote an organic AMA post, reminder ads let people tap "Remind Me" before an event, Redditor Highlights add real community posts under an ad, and app ads use the standard image, video and carousel specs.

AMA ads, reminder ads, Redditor Highlights and app ads: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
AMA ads Creative comes from the AMA post; title up to 300 characters; first image is the thumbnail (no crop); no custom CTA or URL; the button moves from "Remind Me" to "Join Now"; awareness or traffic; RSVP count shows once 11 or more people register —
Reminder ads Image or video; awareness (impressions) or traffic; "Remind Me" button plus an optional event CTA; event 10 minutes to 60 days after the ad is created; every placement Headline of 25–50 characters
Redditor Highlights 3–5 user posts and a short summary of brand sentiment under image or video ads; feed only; on by default except in regulated or sensitive categories and limited inventory; no assets needed —
App promotion Image, video or carousel with the standard specs; MMP postbacks required —

Reddit's pages: AMA ads · Reminder ads · Redditor Highlights · App install ads · checked

Max campaign assets · Reddit's limit, then Reddit's recommendation

Reddit Max campaign asset specs

Max campaigns mix your assets automatically. They take image and video only, 3–15 headlines and up to 30 media files, and cap video at 100 MB instead of 1 GB.

Reddit Max campaign asset specs: Reddit's limits and recommendations
Spec Reddit's limit Reddit recommends
Headlines 3–15, up to 300 characters each 5 or more, 50 characters or fewer
Media 1–30 in total: up to 20 images and 10 videos 5 or more
Images JPG, PNG or GIF, up to 10 MB At least 1,000 px wide; 1:1, 3:4, 4:3 or 16:9
Videos MP4 or MOV (no ProRes), up to 100 MB, 30 fps 5–30 seconds; 1:1, 3:4, 4:5, 4:3 or 16:9
Thumbnails Up to 10; JPG or PNG, up to 3 MB 4:3 · 400 × 300 or 1:1 · 300 × 300 px
CTAs Up to 5 2 or more
Objectives / placements Traffic, app promotion, sales, leads; any placement —

Reddit's pages: Max specifications · checked

Premium formats · sold by Reddit's sales team, not in self-serve Ads Manager

Reddit Takeover, First View and Category Takeover specs

Takeovers are reserved for managed advertisers buying on CPM, and Reddit's managed sales team asks for a commitment of $10,000 or more a quarter (or an advertiser in a sensitive category). Reddit publishes no takeover prices. Most takeover assets follow the image and video specs; animated GIFs and ProRes are not accepted.

Reddit premium takeover packages
Package What it includes Runs for
Reddit Takeover Home and Popular feeds, the desktop sidebar, optional Vertical Video Takeover (beta) and Video Spotlight (beta) 24 hours
First View The first ad impression on Home and Popular, optional Video Spotlight The day
Category Takeover Community feeds of one of 15+ categories, the desktop sidebar and the first conversation ad slot 24 hours or more

Takeover asset specs

Reddit takeover asset specs
Asset Reddit's limit Reddit recommends
Feed card (all three) Headline 300 characters, text 40,000. Image JPG or PNG up to 3 MB; video MOV or MP4 up to 1 GB, 30 fps; thumbnail up to 500 KB 4:3 · 1440 × 1080 px (1:1 · 1080 × 1080, 4:5 · 1080 × 1350 and 16:9 · 1920 × 1080 accepted); thumbnail 4:3 · 400 × 300
Desktop sidebar JPG or PNG up to 150 KB Above the fold 9:16 · 1080 × 1920 (1:1, 4:5, 1:2 · 300 × 600 and 6:5 · 300 × 250 accepted); below the fold 1:1 · 1080 × 1080
Category Takeover conversation slot Card image up to 1 MB, thumbnail 500 KB, video 1 GB; headline cut after 145 characters Headline of 50 characters; 4:3 · 400 × 300 (1:1 · 1080 × 1080 accepted)
Video Spotlight / Vertical Video Takeover (beta) Video Spotlight takes 9:16; Vertical Video Takeover takes any ratio. File limits not published —

Reddit's pages: How to purchase Reddit Ads · Ad unit specifications (takeover section) · Reddit Takeover · checked

The text limits are the same on every format, and the review rejects ads that break the editorial rules.

Reddit ad headline, URL and CTA limits

Headline
300 characters on every format (Reddit recommends 100 or fewer; Max asks for headlines of 50 or fewer).
Destination URL
268 characters, HTTPS, and it cannot end with a semicolon.
Display URL
100 characters, on the same domain as the destination URL unless you use a click tracker.
Caption
50 characters per carousel card and per free-form image or video.
Capital letters
No more than 50% of the ad copy in capitals.
URLs in the headline
Not allowed unless the law requires them.
Clickbait
No withholding information or sensational wording to get clicks.
Video language
The language spoken in a video ad must match the ad copy; mature video needs [SPOILER] before the copy.
Extra text
The "Additional Text" field closed to new ads in February 2025, except for legal or regulatory text.

The 23 call-to-action buttons

Optional on image, video and carousel ads. AMA and reminder ads use "Remind Me" instead; interactive quiz and poll ads take your own text.

  • Apply Now
  • Book Now
  • Buy Tickets
  • Contact Us
  • Donate Now
  • Download
  • Get Directions
  • Get Quote
  • Get Showtimes
  • Install
  • Learn More
  • Listen Now
  • Order Now
  • Play Now
  • Pre-order Now
  • Read More
  • See Menu
  • Shop Now
  • Sign Up
  • Subscribe
  • Visit Store
  • View More
  • Watch Now

Reddit's pages: Ad unit specifications · Editorial requirements · Ad review process

Why one image can look different in two places: compact view and conversation pages show the thumbnail, not the main image.

Where Reddit ads appear, and what each placement shows

Reddit recommends automatic placements, and at least one placement is required. "Conversation ads" is a placement, not a separate format.

Reddit ad placements and what each shows
Placement What shows there Formats
Feed, card view Home, Popular and community feeds. Shows the main image, video or carousel. Every ad type
Feed, compact view The same feeds in the compact layout. Image and carousel ads show the 400 × 300 thumbnail instead of the main media; a click on a video opens the landing page. Every ad type
Conversation On comment pages, between the post and the first comment or further down the thread. Image ads show the thumbnail; carousels show every card. Every ad type except interactive and collection ads and Redditor Highlights
Desktop right rail Named only in Reddit's marketing comparison table, as optional for image ads; the Help Center does not list it. Image ads
Takeover surfaces First ad on Home and Popular, the desktop sidebar, the first conversation slot in a category, and the app's vertical video surface. Premium, through Reddit sales

What we make for a new Reddit test (our default, not Reddit's rule)

  • Images: a 1440 × 1080 master under 3 MB, a 1080 × 1350 cut for mobile, and our own 400 × 300 thumbnail under 500 KB in which the message still reads, because compact view and conversation pages show only the thumbnail.
  • Video: 5–30 seconds, 4:5 (1200 × 1500) for mobile and 4:3 or 16:9 for everything else, captions on, the brand inside the first three seconds, under 100 MB so the same file works in Max.
  • Carousels: one ratio on every card, captions of 50 characters or fewer.
  • Headlines: the point in the first 80 characters, plus three to five short variants for Max.

Reddit publishes no safe-zone dimensions; it advises checking every placement in the Ads Manager preview.

Most Reddit tests start from creative made for another platform. Here is what carries over, judged only against Reddit's own ratios.

Reusing Meta, LinkedIn and TikTok creative on Reddit

Common ad sizes from other platforms and how Reddit treats them
Size Usually made for As a Reddit image ad As a Reddit video ad
1080 × 1080 (1:1) Meta and LinkedIn square Recommended on mobile Accepted (Reddit lists 1200 × 1200)
1080 × 1350 (4:5) Meta feed portrait Recommended on mobile Recommended on mobile (Reddit lists 1200 × 1500)
1920 × 1080 (16:9) YouTube, landscape video Recommended on all devices Recommended on all devices
1200 × 628 (1.91:1) LinkedIn and Meta link images Not among the Help Center's ratios (only Reddit's comparison table lists it); may be letterboxed. Re-crop to 1440 × 1080 —
1080 × 1920 (9:16) TikTok, Reels, Stories Not among the recommended ratios Not listed; Reddit's TikTok guide says to resize to 4:3 or 16:9

Reddit's pages: Image ad specifications · Video ad specifications · Convert TikTok ads to Reddit video ads

Why spec pages around the web give different numbers: Reddit's own pages do.

Where Reddit's own pages disagree, and which value to plan for

Reddit's Help Center, its marketing comparison table and its Learning Hub give different values for the same spec. The tables above follow the Help Center's spec articles. Here are both values with their pages, and the one we plan for.

Specs on which Reddit's pages disagree
Spec One Reddit page says Another says Plan for (our advice)
Image file size 3 MB (Image ad specifications) 20 MB (Ad types comparison table) Keep image files under 3 MB.
Recommended image size 4:3 · 1440 × 1080 px (Image ad specifications) 1:1 or 16:9 · 1200 × 628 px and up (Ad types comparison table) Make 1440 × 1080 first; add 1080 × 1350 for mobile-heavy tests.
Animated GIFs Converted to still images (Image ad specs guide (Learning Hub)) 3–10 second GIFs recommended for carousel cards (Carousel ad specifications) Expect a GIF to show as a still; use video for motion. Takeovers do not take animated GIFs.
Video length 5–30 seconds recommended (Video ad specifications) Under 10 seconds (video ads page); 60 seconds or less (comparison table) (Video ads page) The limit is 2 seconds to 15 minutes. Start with 5–30 seconds and a 6–10 second cut.
Thumbnail file size Up to 3 MB (Image ad specifications) Under 500 KB (Image ad specs guide (Learning Hub)) Keep thumbnails under 500 KB, the takeover limit too.
Headline length advice 100 characters or fewer (80 to be safe) (Image, video and carousel specs) 150 characters or fewer (Creative best practices) Say it in the first 80 characters; in Max write 50 or fewer.
Ad review time Typically within one day (Ad review process) Up to 48 business hours (Set up a campaign) Allow two business days before launch.
Lead gen form A form on your website (About lead generation ads) A pop-up form on Reddit (Reddit lead gen ads) Both exist since 6 October 2026; choose in Ads Manager and test the form in preview.
Text-only "Text/Link" ads Listed as a format (What are Reddit Ads formats? (Learning Hub)) Not a format; image, video, carousel, free-form, interactive (Ad unit specifications) For a text-led ad, use free-form.

The options an ad group can use, as Reddit lists them today.

Reddit ad targeting options

Interest
Topics people recently interacted with, on the IAB standard.
Community
Communities people subscribed to, viewed or visited in the last 28 days. Reddit suggests at least 15 per ad group.
Keyword
Posts and conversations containing your keywords, in six languages; lists of up to 2,000 lines.
Automated targeting
On by default: your choices become suggestions, while location, device, carrier and language stay fixed.
Custom audiences
Website visitors from the Pixel or Conversions API (1–90-day lookback), customer lists (1,000 to 1 million matches), lookalikes (from 10,000 visitors or 1,000 matched customers) and people who engaged with your ads in the past six months.
Location
Country, region, US DMA, and up to 20,000 postal codes per ad group.
Demographics
Gender (beta) and 21 languages. The Help Center lists no age targeting.
Device
Device, carrier and, for app campaigns, OS version.
Schedule
Hours and days of the week.
In-market audiences (beta)
Through Max campaigns, for example Enterprise and Business AI or Cybersecurity.

Sensitive categories (health, politics, religion, sexual orientation and others) cannot be targeted, and some communities are never open to ads. Community targeting reaches people by the communities they read; it is not a placement inside that community.

Reddit's pages: Audience and targeting overview · Reddit audiences · Custom audiences

An ad that meets every spec still fails if conversions never reach Reddit. Set these up before launch.

Reddit Pixel and conversion setup

  1. 01

    Install the Reddit Pixel. By hand, through Google Tag Manager, Shopify or a partner integration. Enhanced metadata sharing is on by default.

  2. 02

    Add the Conversions API. Server to server, events sent within seven days, up to 1,000 events per request, deduplicated against the Pixel.

  3. 03

    Send the right events. Eight standard events: PageVisit, ViewContent, Search, AddToCart, AddToWishlist, Purchase, Lead, SignUp. Custom events are allowed; the dashboard shows the 20 most recent.

  4. 04

    For Dynamic Product Ads. ViewContent, AddToCart and Purchase with product IDs that match your catalog.

  5. 05

    Pick attribution windows. Click-through 1, 7 or 28 days (28 by default) and view-through 1 day by default; the view window cannot be longer than the click window.

  6. 06

    For app campaigns. MMP postbacks (Adjust, AppsFlyer, Branch, Kochava, Singular) and SKAN on iOS.

  7. 07

    Tag catalog ads. Reddit suggests source=reddit, medium={{ADVERTISER_ID}}, campaign={{CAMPAIGN_ID}}-{{ADGROUP_NAME}}, content={{AD_ID}}-{{AD_NAME}}. Parameters cannot be changed after the ad is published.

Reddit's pages: Reddit Pixel · Conversions API · Supported conversion events · Attribution windows · URL parameters

Spec pages go stale quietly. This is what Reddit changed, newest first, each with its source.

What changed in Reddit ads

  1. Cost cap bidding ends for sales, app promotion and lead generation; target cost bidding (beta) replaces it. Source

  2. Users start getting "For You" and "Following" feeds. Reddit's ad pages still name Home, Popular and community feeds as placements. Source

  3. Campaign planner and optimization score roll out to all advertisers; campaign budget optimization covers every objective (sales, lead gen and app promotion in beta). Source

  4. Oct 2026

    Keyword targeting works in English, German, French, Italian, Spanish and Dutch (it was English only); language targeting lists 21 languages. Source

  5. Oct 2026

    The Reddit Pixel shares "enhanced metadata" (Open Graph, JSON-LD and product details) by default; it can be turned off in Events Manager. Source

  6. Lead generation expanded: landing pages or forms, CRM routing, HubSpot integration in open beta, Max for lead generation, in-market audiences (beta). Source

  7. Max campaigns open to all advertisers, with asset groups. Source

  8. 15-second engaged video views goal in public beta for all advertisers. Source

  9. Free-form ad generator in beta for select advertisers. Source

  10. Redditor Highlights (community posts under an ad) generally available; Shopping Listing Ads in alpha. Source

  11. Reminder ads generally available. Source

  12. Collection ads: a lifestyle hero image above shoppable product tiles. Source

  13. Interactive ads (countdown, quiz, poll) launch in alpha; the Help Center now labels them beta. Source

Sources, and how this page stays current

Every value on this page comes from Reddit's own pages: the Reddit Ads Help Center, business.reddit.com and Reddit's newsroom. We read them on and check them again every quarter; the next check is in January 2027. Where Reddit's pages disagree, the tables follow the Help Center's spec articles. Recommendations marked as ours are our advice, not Reddit's rules.

Reddit ad specs FAQ

What size should a Reddit ad image be?

Reddit recommends 1440 × 1080 px (4:3) as the one image for every device. On mobile it also recommends 1080 × 1080 (1:1), 1080 × 1440 (3:4), 1080 × 1350 (4:5) and 1920 × 1080 (16:9). Image ads take JPG, PNG or GIF files up to 3 MB. Any ratio is accepted, but other ratios may be letterboxed.

What are the Reddit video ad specs?

MP4 or MOV (no ProRes), up to 1 GB, 2 seconds to 15 minutes, up to 30 fps. Reddit recommends 5–30 seconds and 4:3 (1440 × 1080) or 16:9 (1920 × 1080) for every device, with 1:1, 3:4 and 4:5 on mobile. In Max campaigns the file limit is 100 MB.

How long can a Reddit ad headline be?

Up to 300 characters on every format. Reddit recommends 100 or fewer and puts the safe limit at 80, because longer headlines get cut on some devices. Max campaigns ask for headlines of 50 characters or fewer, and a Category Takeover conversation ad cuts its headline after 145.

Does Reddit support 9:16 vertical video ads?

Not in standard auction ads: 9:16 is not among Reddit's recommended or accepted video ratios, and its guide for moving TikTok ads to Reddit says to resize them to 4:3 or 16:9. Vertical 9:16 is used in premium placements sold by Reddit's sales team: Video Spotlight and the desktop takeover sidebar.

What is the difference between a Reddit ad format and a placement?

The format is what you build: image, video, carousel, free-form or interactive. The placement is where it shows: the feed (Home, Popular and community feeds) or the conversation placement on comment pages. "Conversation ads" are a placement, not a format; every format except interactive and collection ads can run there.

What is the ideal size for a Reddit banner ad?

Self-serve Reddit Ads have no banner format. The banner-like slot is the desktop sidebar in a Reddit Takeover or Category Takeover, sold only through Reddit's sales team: JPG or PNG up to 150 KB, 1080 × 1920 px (9:16) above the fold and 1080 × 1080 (1:1) below it. A subreddit's banner is the community's header image, not an ad.

How do I buy a Reddit Takeover?

Through Reddit's sales team only. Takeovers are reserved for managed advertisers on a CPM model, and managed sales asks for a commitment of $10,000 or more a quarter (or an advertiser in a sensitive category). Reddit does not publish takeover prices.

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